From e0d47ea74b25e8fc999d53d27605bf5ed551c106 Mon Sep 17 00:00:00 2001
From: Harvey Zhao <laozhaochaguan@gmail.com>
Date: Sat, 12 Sep 2026 04:16:32 +0800
Subject: [PATCH] fix(chapter): [PKG-CHAPTER-05] checkpoint composition tests
 and bounded title layout

---
 docs/compiled/artplayer-plugin-chapter.js     |    2 +-
 .../artplayer-plugin-chapter.legacy.js        |    2 +-
 docs/compiled/artplayer-plugin-chapter.mjs    |    2 +-
 .../artplayer-plugin-chapter/ARCHITECTURE.md  |   14 +
 .../dist/artplayer-plugin-chapter.js          |    2 +-
 .../dist/artplayer-plugin-chapter.legacy.js   |    2 +-
 .../dist/artplayer-plugin-chapter.mjs         |    2 +-
 .../artplayer-plugin-chapter/src/style.less   |    4 +
 .../chapter-combinations-checkpoint.json      | 7602 +++++++++++++++++
 .../2026-09-12-PKG-CHAPTER-05-combinations.md |   60 +
 refactor/plan.md                              |    5 +-
 refactor/progress.md                          |   15 +
 refactor/risk-table.md                        |    2 +
 refactor/risks.json                           |   37 +
 refactor/tasks.json                           |    7 +-
 test/browser/chapter-combinations.spec.js     |  194 +
 16 files changed, 7942 insertions(+), 10 deletions(-)
 create mode 100644 refactor/baselines/chapter-combinations-checkpoint.json
 create mode 100644 refactor/changes/2026-09-12-PKG-CHAPTER-05-combinations.md
 create mode 100644 test/browser/chapter-combinations.spec.js

diff --git a/docs/compiled/artplayer-plugin-chapter.js b/docs/compiled/artplayer-plugin-chapter.js
index 543d58460..af7b8bddf 100644
--- a/docs/compiled/artplayer-plugin-chapter.js
+++ b/docs/compiled/artplayer-plugin-chapter.js
@@ -4,4 +4,4 @@
  * (c) 2017-2026 Harvey Zhao
  * Released under the MIT License.
  */
-!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginChapter=e(),define(function(){return t.artplayerPluginChapter})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginChapter=e()}(this,function(){"use strict";return function(){if("undefined"===typeof document)return;const t="artplayer-plugin-chapter",e=()=>{let e=document.getElementById(t);e||(e=document.createElement("style"),e.id=t,(document.head||document.documentElement).appendChild(e)),e.textContent=".artplayer-plugin-chapter .art-control-progress-inner{height:100%!important;background-color:transparent!important}.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-hover,.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-loaded,.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-played{display:none!important}.artplayer-plugin-chapter .art-control-thumbnails{bottom:calc(var(--art-bottom-gap) + 64px)!important}.artplayer-plugin-chapter .art-chapters{position:absolute;z-index:0;inset:0;display:flex;align-items:center;gap:4px;height:100%;transform:scaleY(1.25)}.artplayer-plugin-chapter .art-chapters .art-chapter{display:flex;align-items:center;height:100%}.artplayer-plugin-chapter .art-chapters .art-chapter .art-chapter-inner{position:relative;cursor:pointer;width:100%;height:50%;border-radius:10px;overflow:hidden;transition:height var(--art-transition-duration) ease;background-color:var(--art-progress-color)}.artplayer-plugin-chapter .art-chapters .art-chapter:hover .art-chapter-inner{height:100%}.artplayer-plugin-chapter .art-chapter-title{transform-origin:bottom center;transform:scale(.5);opacity:0;position:absolute;z-index:70;top:-50px;left:0;padding:3px 5px;line-height:1;font-size:14px;border-radius:var(--art-border-radius);white-space:nowrap;background-color:var(--art-tip-background);transition:transform var(--art-transition-duration) ease,opacity var(--art-transition-duration) ease}.artplayer-plugin-chapter.art-progress-hover .art-chapter-title{transform:scale(1);opacity:1}"};document.getElementById(t)||"loading"!==document.readyState?e():document.addEventListener("DOMContentLoaded",e,{once:!0})}(),function(t={}){return e=>{const r=e.template.$player,a=e.query(".art-control-progress-inner");if(!a)throw new Error("Missing ArtPlayer progress container");const n="artplayer-plugin-chapter";let o=function(t){const e=(e,r)=>{const a=t.ownerDocument.createElement("div");return a.className=r,e.appendChild(a),a},r=e(t,"art-chapters"),a=e(t,"art-chapter-title");let n=[];function o(){a.textContent="",a.style.left="0px",a.style.visibility="hidden"}function i(){n=[],r.textContent="",o()}return o(),{clear:i,render:function(t,a){n=t.map(t=>{const n=e(r,"art-chapter"),o=e(n,"art-chapter-inner"),i=t.end-t.start;return n.dataset.start=String(t.start),n.dataset.end=String(t.end),n.dataset.duration=String(i),n.dataset.title=t.title.trim(),n.style.width=i/a*100+"%",{start:t.start,end:t.end,title:t.title.trim(),bars:{hover:e(o,"art-progress-hover"),loaded:e(o,"art-progress-loaded"),played:e(o,"art-progress-played")}}})},setBar:function(e,i,s){if("hover"!==e&&"loaded"!==e&&"played"!==e)return;if(!Number.isFinite(i))return;const l=s*i;let p;for(const t of n)t.bars[e].style.width=l<t.start?"0px":l>t.end?"100%":(l-t.start)/(t.end-t.start)*100+"%",l>=t.start&&l<=t.end&&(p=t);if("hover"!==e)return;o();const d=r.clientWidth*i;p?.title&&d>0&&(a.textContent=p.title,a.style.visibility="visible",a.style.left=`${Math.max(0,Math.min(d-a.clientWidth/2,t.clientWidth-a.clientWidth))}px`)},destroy:function(){i(),r.remove(),a.remove()}}}(a);function i(t){if(!o||e.isDestroy)return;o.clear(),r.classList.remove(n);const a=function(t=[],e){if(!Array.isArray(t)||!t.length||!Number.isFinite(e)||e<=0)return[];t.sort((t,e)=>t.start-e.start);for(const[n,o]of t.entries()){if(!o||"number"!==typeof o.start||"number"!==typeof o.end||"string"!==typeof o.title)throw new TypeError("Illegal chapter data type");o.end===1/0&&(o.end=e);const r=t[n+1];if(!Number.isFinite(o.start)||!Number.isFinite(o.end)||o.start<0||o.end>e||o.start>=o.end||r&&o.end>r.start)throw new Error("Illegal chapter time point")}const r=t[0],a=t[t.length-1];r&&r.start>0&&t.unshift({start:0,end:r.start,title:""}),a&&a.end<e&&t.push({start:a.end,end:e,title:""});for(let n=0;n<t.length-1;n++){const e=t[n],r=t[n+1];e&&r&&e.end!==r.start&&t.splice(n+1,0,{start:e.end,end:r.start,title:""})}return t}(t,e.duration);a.length&&(o.render(a,e.duration),r.classList.add(n),e.emit("setBar","loaded",e.loaded||0))}function s(t,r){e.isDestroy||o?.setBar(t,r,e.duration)}function l(){i(t.chapters)}return e.on("setBar",s),e.once("video:loadedmetadata",l),e.on("destroy",function t(){e.off("setBar",s),e.off("video:loadedmetadata",l),e.off("destroy",t),o?.destroy(),o=void 0,r.classList.remove(n)}),{name:"artplayerPluginChapter",update:({chapters:t})=>i(t)}}}});
+!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginChapter=e(),define(function(){return t.artplayerPluginChapter})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginChapter=e()}(this,function(){"use strict";return function(){if("undefined"===typeof document)return;const t="artplayer-plugin-chapter",e=()=>{let e=document.getElementById(t);e||(e=document.createElement("style"),e.id=t,(document.head||document.documentElement).appendChild(e)),e.textContent=".artplayer-plugin-chapter .art-control-progress-inner{height:100%!important;background-color:transparent!important}.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-hover,.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-loaded,.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-played{display:none!important}.artplayer-plugin-chapter .art-control-thumbnails{bottom:calc(var(--art-bottom-gap) + 64px)!important}.artplayer-plugin-chapter .art-chapters{position:absolute;z-index:0;inset:0;display:flex;align-items:center;gap:4px;height:100%;transform:scaleY(1.25)}.artplayer-plugin-chapter .art-chapters .art-chapter{display:flex;align-items:center;height:100%}.artplayer-plugin-chapter .art-chapters .art-chapter .art-chapter-inner{position:relative;cursor:pointer;width:100%;height:50%;border-radius:10px;overflow:hidden;transition:height var(--art-transition-duration) ease;background-color:var(--art-progress-color)}.artplayer-plugin-chapter .art-chapters .art-chapter:hover .art-chapter-inner{height:100%}.artplayer-plugin-chapter .art-chapter-title{transform-origin:bottom center;transform:scale(.5);opacity:0;position:absolute;z-index:70;top:-50px;left:0;padding:3px 5px;line-height:1;font-size:14px;border-radius:var(--art-border-radius);white-space:nowrap;box-sizing:border-box;max-width:100%;overflow:hidden;text-overflow:ellipsis;background-color:var(--art-tip-background);transition:transform var(--art-transition-duration) ease,opacity var(--art-transition-duration) ease}.artplayer-plugin-chapter.art-progress-hover .art-chapter-title{transform:scale(1);opacity:1}"};document.getElementById(t)||"loading"!==document.readyState?e():document.addEventListener("DOMContentLoaded",e,{once:!0})}(),function(t={}){return e=>{const r=e.template.$player,a=e.query(".art-control-progress-inner");if(!a)throw new Error("Missing ArtPlayer progress container");const n="artplayer-plugin-chapter";let o=function(t){const e=(e,r)=>{const a=t.ownerDocument.createElement("div");return a.className=r,e.appendChild(a),a},r=e(t,"art-chapters"),a=e(t,"art-chapter-title");let n=[];function o(){a.textContent="",a.style.left="0px",a.style.visibility="hidden"}function i(){n=[],r.textContent="",o()}return o(),{clear:i,render:function(t,a){n=t.map(t=>{const n=e(r,"art-chapter"),o=e(n,"art-chapter-inner"),i=t.end-t.start;return n.dataset.start=String(t.start),n.dataset.end=String(t.end),n.dataset.duration=String(i),n.dataset.title=t.title.trim(),n.style.width=i/a*100+"%",{start:t.start,end:t.end,title:t.title.trim(),bars:{hover:e(o,"art-progress-hover"),loaded:e(o,"art-progress-loaded"),played:e(o,"art-progress-played")}}})},setBar:function(e,i,s){if("hover"!==e&&"loaded"!==e&&"played"!==e)return;if(!Number.isFinite(i))return;const l=s*i;let d;for(const t of n)t.bars[e].style.width=l<t.start?"0px":l>t.end?"100%":(l-t.start)/(t.end-t.start)*100+"%",l>=t.start&&l<=t.end&&(d=t);if("hover"!==e)return;o();const p=r.clientWidth*i;d?.title&&p>0&&(a.textContent=d.title,a.style.visibility="visible",a.style.left=`${Math.max(0,Math.min(p-a.clientWidth/2,t.clientWidth-a.clientWidth))}px`)},destroy:function(){i(),r.remove(),a.remove()}}}(a);function i(t){if(!o||e.isDestroy)return;o.clear(),r.classList.remove(n);const a=function(t=[],e){if(!Array.isArray(t)||!t.length||!Number.isFinite(e)||e<=0)return[];t.sort((t,e)=>t.start-e.start);for(const[n,o]of t.entries()){if(!o||"number"!==typeof o.start||"number"!==typeof o.end||"string"!==typeof o.title)throw new TypeError("Illegal chapter data type");o.end===1/0&&(o.end=e);const r=t[n+1];if(!Number.isFinite(o.start)||!Number.isFinite(o.end)||o.start<0||o.end>e||o.start>=o.end||r&&o.end>r.start)throw new Error("Illegal chapter time point")}const r=t[0],a=t[t.length-1];r&&r.start>0&&t.unshift({start:0,end:r.start,title:""}),a&&a.end<e&&t.push({start:a.end,end:e,title:""});for(let n=0;n<t.length-1;n++){const e=t[n],r=t[n+1];e&&r&&e.end!==r.start&&t.splice(n+1,0,{start:e.end,end:r.start,title:""})}return t}(t,e.duration);a.length&&(o.render(a,e.duration),r.classList.add(n),e.emit("setBar","loaded",e.loaded||0))}function s(t,r){e.isDestroy||o?.setBar(t,r,e.duration)}function l(){i(t.chapters)}return e.on("setBar",s),e.once("video:loadedmetadata",l),e.on("destroy",function t(){e.off("setBar",s),e.off("video:loadedmetadata",l),e.off("destroy",t),o?.destroy(),o=void 0,r.classList.remove(n)}),{name:"artplayerPluginChapter",update:({chapters:t})=>i(t)}}}});
diff --git a/docs/compiled/artplayer-plugin-chapter.legacy.js b/docs/compiled/artplayer-plugin-chapter.legacy.js
index bca6e83f4..31087aeff 100644
--- a/docs/compiled/artplayer-plugin-chapter.legacy.js
+++ b/docs/compiled/artplayer-plugin-chapter.legacy.js
@@ -4,4 +4,4 @@
  * (c) 2017-2026 Harvey Zhao
  * Released under the MIT License.
  */
-!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginChapter=e(),define(function(){return t.artplayerPluginChapter})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginChapter=e()}(this,function(){"use strict";return function(){if("undefined"===typeof document)return;const t="artplayer-plugin-chapter",e=()=>{let e=document.getElementById(t);e||(e=document.createElement("style"),e.id=t,(document.head||document.documentElement).appendChild(e)),e.textContent=".artplayer-plugin-chapter .art-control-progress-inner{height:100%!important;background-color:transparent!important}.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-hover,.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-loaded,.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-played{display:none!important}.artplayer-plugin-chapter .art-control-thumbnails{bottom:calc(var(--art-bottom-gap) + 64px)!important}.artplayer-plugin-chapter .art-chapters{position:absolute;z-index:0;inset:0;display:flex;align-items:center;gap:4px;height:100%;transform:scaleY(1.25)}.artplayer-plugin-chapter .art-chapters .art-chapter{display:flex;align-items:center;height:100%}.artplayer-plugin-chapter .art-chapters .art-chapter .art-chapter-inner{position:relative;cursor:pointer;width:100%;height:50%;border-radius:10px;overflow:hidden;transition:height var(--art-transition-duration) ease;background-color:var(--art-progress-color)}.artplayer-plugin-chapter .art-chapters .art-chapter:hover .art-chapter-inner{height:100%}.artplayer-plugin-chapter .art-chapter-title{transform-origin:bottom center;transform:scale(.5);opacity:0;position:absolute;z-index:70;top:-50px;left:0;padding:3px 5px;line-height:1;font-size:14px;border-radius:var(--art-border-radius);white-space:nowrap;background-color:var(--art-tip-background);transition:transform var(--art-transition-duration) ease,opacity var(--art-transition-duration) ease}.artplayer-plugin-chapter.art-progress-hover .art-chapter-title{transform:scale(1);opacity:1}"};document.getElementById(t)||"loading"!==document.readyState?e():document.addEventListener("DOMContentLoaded",e,{once:!0})}(),function(t={}){return e=>{const r=e.template.$player,a=e.query(".art-control-progress-inner");if(!a)throw new Error("Missing ArtPlayer progress container");const n="artplayer-plugin-chapter";let o=function(t){const e=(e,r)=>{const a=t.ownerDocument.createElement("div");return a.className=r,e.appendChild(a),a},r=e(t,"art-chapters"),a=e(t,"art-chapter-title");let n=[];function o(){a.textContent="",a.style.left="0px",a.style.visibility="hidden"}function i(){n=[],r.textContent="",o()}return o(),{clear:i,render:function(t,a){n=t.map(t=>{const n=e(r,"art-chapter"),o=e(n,"art-chapter-inner"),i=t.end-t.start;return n.dataset.start=String(t.start),n.dataset.end=String(t.end),n.dataset.duration=String(i),n.dataset.title=t.title.trim(),n.style.width=i/a*100+"%",{start:t.start,end:t.end,title:t.title.trim(),bars:{hover:e(o,"art-progress-hover"),loaded:e(o,"art-progress-loaded"),played:e(o,"art-progress-played")}}})},setBar:function(e,i,s){if("hover"!==e&&"loaded"!==e&&"played"!==e)return;if(!Number.isFinite(i))return;const l=s*i;let p;for(const t of n)t.bars[e].style.width=l<t.start?"0px":l>t.end?"100%":(l-t.start)/(t.end-t.start)*100+"%",l>=t.start&&l<=t.end&&(p=t);if("hover"!==e)return;o();const d=r.clientWidth*i;(null==p?void 0:p.title)&&d>0&&(a.textContent=p.title,a.style.visibility="visible",a.style.left=`${Math.max(0,Math.min(d-a.clientWidth/2,t.clientWidth-a.clientWidth))}px`)},destroy:function(){i(),r.remove(),a.remove()}}}(a);function i(t){if(!o||e.isDestroy)return;o.clear(),r.classList.remove(n);const a=function(t=[],e){if(!Array.isArray(t)||!t.length||!Number.isFinite(e)||e<=0)return[];t.sort((t,e)=>t.start-e.start);for(const[n,o]of t.entries()){if(!o||"number"!==typeof o.start||"number"!==typeof o.end||"string"!==typeof o.title)throw new TypeError("Illegal chapter data type");o.end===1/0&&(o.end=e);const r=t[n+1];if(!Number.isFinite(o.start)||!Number.isFinite(o.end)||o.start<0||o.end>e||o.start>=o.end||r&&o.end>r.start)throw new Error("Illegal chapter time point")}const r=t[0],a=t[t.length-1];r&&r.start>0&&t.unshift({start:0,end:r.start,title:""}),a&&a.end<e&&t.push({start:a.end,end:e,title:""});for(let n=0;n<t.length-1;n++){const e=t[n],r=t[n+1];e&&r&&e.end!==r.start&&t.splice(n+1,0,{start:e.end,end:r.start,title:""})}return t}(t,e.duration);a.length&&(o.render(a,e.duration),r.classList.add(n),e.emit("setBar","loaded",e.loaded||0))}function s(t,r){e.isDestroy||null==o||o.setBar(t,r,e.duration)}function l(){i(t.chapters)}return e.on("setBar",s),e.once("video:loadedmetadata",l),e.on("destroy",function t(){e.off("setBar",s),e.off("video:loadedmetadata",l),e.off("destroy",t),null==o||o.destroy(),o=void 0,r.classList.remove(n)}),{name:"artplayerPluginChapter",update:({chapters:t})=>i(t)}}}});
+!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginChapter=e(),define(function(){return t.artplayerPluginChapter})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginChapter=e()}(this,function(){"use strict";return function(){if("undefined"===typeof document)return;const t="artplayer-plugin-chapter",e=()=>{let e=document.getElementById(t);e||(e=document.createElement("style"),e.id=t,(document.head||document.documentElement).appendChild(e)),e.textContent=".artplayer-plugin-chapter .art-control-progress-inner{height:100%!important;background-color:transparent!important}.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-hover,.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-loaded,.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-played{display:none!important}.artplayer-plugin-chapter 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i(t){if(!o||e.isDestroy)return;o.clear(),r.classList.remove(n);const a=function(t=[],e){if(!Array.isArray(t)||!t.length||!Number.isFinite(e)||e<=0)return[];t.sort((t,e)=>t.start-e.start);for(const[n,o]of t.entries()){if(!o||"number"!==typeof o.start||"number"!==typeof o.end||"string"!==typeof o.title)throw new TypeError("Illegal chapter data type");o.end===1/0&&(o.end=e);const r=t[n+1];if(!Number.isFinite(o.start)||!Number.isFinite(o.end)||o.start<0||o.end>e||o.start>=o.end||r&&o.end>r.start)throw new Error("Illegal chapter time point")}const r=t[0],a=t[t.length-1];r&&r.start>0&&t.unshift({start:0,end:r.start,title:""}),a&&a.end<e&&t.push({start:a.end,end:e,title:""});for(let n=0;n<t.length-1;n++){const e=t[n],r=t[n+1];e&&r&&e.end!==r.start&&t.splice(n+1,0,{start:e.end,end:r.start,title:""})}return t}(t,e.duration);a.length&&(o.render(a,e.duration),r.classList.add(n),e.emit("setBar","loaded",e.loaded||0))}function s(t,r){e.isDestroy||null==o||o.setBar(t,r,e.duration)}function l(){i(t.chapters)}return e.on("setBar",s),e.once("video:loadedmetadata",l),e.on("destroy",function t(){e.off("setBar",s),e.off("video:loadedmetadata",l),e.off("destroy",t),null==o||o.destroy(),o=void 0,r.classList.remove(n)}),{name:"artplayerPluginChapter",update:({chapters:t})=>i(t)}}}});
diff --git a/docs/compiled/artplayer-plugin-chapter.mjs b/docs/compiled/artplayer-plugin-chapter.mjs
index 3282cec07..ee8cad7c8 100644
--- a/docs/compiled/artplayer-plugin-chapter.mjs
+++ b/docs/compiled/artplayer-plugin-chapter.mjs
@@ -105,7 +105,7 @@ function createProgress(inner) {
   clearTitle();
   return { clear, render, setBar, destroy };
 }
-const style = ".artplayer-plugin-chapter .art-control-progress-inner {\n  height: 100% !important;\n  background-color: transparent !important;\n}\n.artplayer-plugin-chapter .art-control-progress-inner > .art-progress-hover,\n.artplayer-plugin-chapter .art-control-progress-inner > .art-progress-loaded,\n.artplayer-plugin-chapter .art-control-progress-inner > .art-progress-played {\n  display: none !important;\n}\n.artplayer-plugin-chapter .art-control-thumbnails {\n  bottom: calc(var(--art-bottom-gap) + 64px) !important;\n}\n.artplayer-plugin-chapter .art-chapters {\n  position: absolute;\n  z-index: 0;\n  inset: 0;\n  display: flex;\n  align-items: center;\n  gap: 4px;\n  height: 100%;\n  transform: scaleY(1.25);\n}\n.artplayer-plugin-chapter .art-chapters .art-chapter {\n  display: flex;\n  align-items: center;\n  height: 100%;\n}\n.artplayer-plugin-chapter .art-chapters .art-chapter .art-chapter-inner {\n  position: relative;\n  cursor: pointer;\n  width: 100%;\n  height: 50%;\n  border-radius: 10px;\n  overflow: hidden;\n  transition: height var(--art-transition-duration) ease;\n  background-color: var(--art-progress-color);\n}\n.artplayer-plugin-chapter .art-chapters .art-chapter:hover .art-chapter-inner {\n  height: 100%;\n}\n.artplayer-plugin-chapter .art-chapter-title {\n  transform-origin: bottom center;\n  transform: scale(0.5);\n  opacity: 0;\n  position: absolute;\n  z-index: 70;\n  top: -50px;\n  left: 0;\n  padding: 3px 5px;\n  line-height: 1;\n  font-size: 14px;\n  border-radius: var(--art-border-radius);\n  white-space: nowrap;\n  background-color: var(--art-tip-background);\n  transition: transform var(--art-transition-duration) ease, opacity var(--art-transition-duration) ease;\n}\n.artplayer-plugin-chapter.art-progress-hover .art-chapter-title {\n  transform: scale(1);\n  opacity: 1;\n}\n";
+const style = ".artplayer-plugin-chapter .art-control-progress-inner {\n  height: 100% !important;\n  background-color: transparent !important;\n}\n.artplayer-plugin-chapter .art-control-progress-inner > .art-progress-hover,\n.artplayer-plugin-chapter .art-control-progress-inner > .art-progress-loaded,\n.artplayer-plugin-chapter .art-control-progress-inner > .art-progress-played {\n  display: none !important;\n}\n.artplayer-plugin-chapter .art-control-thumbnails {\n  bottom: calc(var(--art-bottom-gap) + 64px) !important;\n}\n.artplayer-plugin-chapter .art-chapters {\n  position: absolute;\n  z-index: 0;\n  inset: 0;\n  display: flex;\n  align-items: center;\n  gap: 4px;\n  height: 100%;\n  transform: scaleY(1.25);\n}\n.artplayer-plugin-chapter .art-chapters .art-chapter {\n  display: flex;\n  align-items: center;\n  height: 100%;\n}\n.artplayer-plugin-chapter .art-chapters .art-chapter .art-chapter-inner {\n  position: relative;\n  cursor: pointer;\n  width: 100%;\n  height: 50%;\n  border-radius: 10px;\n  overflow: hidden;\n  transition: height var(--art-transition-duration) ease;\n  background-color: var(--art-progress-color);\n}\n.artplayer-plugin-chapter .art-chapters .art-chapter:hover .art-chapter-inner {\n  height: 100%;\n}\n.artplayer-plugin-chapter .art-chapter-title {\n  transform-origin: bottom center;\n  transform: scale(0.5);\n  opacity: 0;\n  position: absolute;\n  z-index: 70;\n  top: -50px;\n  left: 0;\n  padding: 3px 5px;\n  line-height: 1;\n  font-size: 14px;\n  border-radius: var(--art-border-radius);\n  white-space: nowrap;\n  box-sizing: border-box;\n  max-width: 100%;\n  overflow: hidden;\n  text-overflow: ellipsis;\n  background-color: var(--art-tip-background);\n  transition: transform var(--art-transition-duration) ease, opacity var(--art-transition-duration) ease;\n}\n.artplayer-plugin-chapter.art-progress-hover .art-chapter-title {\n  transform: scale(1);\n  opacity: 1;\n}\n";
 function installStyle() {
   if (typeof document === "undefined")
     return;
diff --git a/packages/artplayer-plugin-chapter/ARCHITECTURE.md b/packages/artplayer-plugin-chapter/ARCHITECTURE.md
index cb31566f0..bbb79f33d 100644
--- a/packages/artplayer-plugin-chapter/ARCHITECTURE.md
+++ b/packages/artplayer-plugin-chapter/ARCHITECTURE.md
@@ -36,6 +36,9 @@ attributes. A successful update adds the historical player class, then emits
 `setBar('loaded', art.loaded || 0)` synchronously. Progress events update the three
 bars; a shared boundary belongs to the later chapter for hover title selection,
 matching the old traversal order. Titles use textContent, never caller HTML.
+Title boxes are limited to the progress container width, including their padding,
+and display an ellipsis for long text. Full textContent and data-title remain intact.
+The renderer still clamps horizontal position; CSS owns text clipping, not normalization.
 
 `update({})` and non-array chapter input clear the view. Invalid types throw
 TypeError and invalid time ranges throw Error with the existing messages. NaN and
@@ -83,6 +86,17 @@ For UI, start at progress.ts/style.less and verify real mouse interaction. For e
 or cleanup changes, start at index.ts and rerun early destroy/multiple-instance tests.
 Any public declaration change also needs new/old compiler and tarball consumers.
 
+`test/browser/chapter-combinations.spec.js` adds old/new core and plugin combinations
+with quality selection, actual thumbnail hover, narrow titles, element fullscreen,
+web fullscreen reparenting and trusted taps. Quality menus must finish opening before
+selection and lose pointer/focus before progress hover. The published core hides its
+menu with opacity/pointer-events; it does not use the candidate visibility rule.
+The published core also has a recorded Windows WebKit quality-position reset; keep
+that historical observation separate from the candidate's position-restoration assertion.
+The touch cases use a 390px viewport, hasTouch and an iPhone user agent on the desktop
+engines. They validate the mobile branch and trusted input, not an actual iPhone.
+See refactor/changes/2026-09-12-PKG-CHAPTER-05-combinations.md for current evidence and gaps.
+
 The public declaration remains available to old compilers and exports Chapters,
 Option and Result as types. Modern import/require conditions select format-specific
 bridges; typesVersions provides the legacy subpath to old resolvers. All bridges
diff --git a/packages/artplayer-plugin-chapter/dist/artplayer-plugin-chapter.js b/packages/artplayer-plugin-chapter/dist/artplayer-plugin-chapter.js
index 543d58460..af7b8bddf 100644
--- a/packages/artplayer-plugin-chapter/dist/artplayer-plugin-chapter.js
+++ b/packages/artplayer-plugin-chapter/dist/artplayer-plugin-chapter.js
@@ -4,4 +4,4 @@
  * (c) 2017-2026 Harvey Zhao
  * Released under the MIT License.
  */
-!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginChapter=e(),define(function(){return t.artplayerPluginChapter})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginChapter=e()}(this,function(){"use strict";return function(){if("undefined"===typeof document)return;const t="artplayer-plugin-chapter",e=()=>{let e=document.getElementById(t);e||(e=document.createElement("style"),e.id=t,(document.head||document.documentElement).appendChild(e)),e.textContent=".artplayer-plugin-chapter .art-control-progress-inner{height:100%!important;background-color:transparent!important}.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-hover,.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-loaded,.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-played{display:none!important}.artplayer-plugin-chapter .art-control-thumbnails{bottom:calc(var(--art-bottom-gap) + 64px)!important}.artplayer-plugin-chapter .art-chapters{position:absolute;z-index:0;inset:0;display:flex;align-items:center;gap:4px;height:100%;transform:scaleY(1.25)}.artplayer-plugin-chapter .art-chapters .art-chapter{display:flex;align-items:center;height:100%}.artplayer-plugin-chapter .art-chapters .art-chapter .art-chapter-inner{position:relative;cursor:pointer;width:100%;height:50%;border-radius:10px;overflow:hidden;transition:height var(--art-transition-duration) ease;background-color:var(--art-progress-color)}.artplayer-plugin-chapter .art-chapters .art-chapter:hover .art-chapter-inner{height:100%}.artplayer-plugin-chapter .art-chapter-title{transform-origin:bottom center;transform:scale(.5);opacity:0;position:absolute;z-index:70;top:-50px;left:0;padding:3px 5px;line-height:1;font-size:14px;border-radius:var(--art-border-radius);white-space:nowrap;background-color:var(--art-tip-background);transition:transform var(--art-transition-duration) ease,opacity var(--art-transition-duration) ease}.artplayer-plugin-chapter.art-progress-hover .art-chapter-title{transform:scale(1);opacity:1}"};document.getElementById(t)||"loading"!==document.readyState?e():document.addEventListener("DOMContentLoaded",e,{once:!0})}(),function(t={}){return e=>{const r=e.template.$player,a=e.query(".art-control-progress-inner");if(!a)throw new Error("Missing ArtPlayer progress container");const n="artplayer-plugin-chapter";let o=function(t){const e=(e,r)=>{const a=t.ownerDocument.createElement("div");return a.className=r,e.appendChild(a),a},r=e(t,"art-chapters"),a=e(t,"art-chapter-title");let n=[];function o(){a.textContent="",a.style.left="0px",a.style.visibility="hidden"}function i(){n=[],r.textContent="",o()}return o(),{clear:i,render:function(t,a){n=t.map(t=>{const n=e(r,"art-chapter"),o=e(n,"art-chapter-inner"),i=t.end-t.start;return n.dataset.start=String(t.start),n.dataset.end=String(t.end),n.dataset.duration=String(i),n.dataset.title=t.title.trim(),n.style.width=i/a*100+"%",{start:t.start,end:t.end,title:t.title.trim(),bars:{hover:e(o,"art-progress-hover"),loaded:e(o,"art-progress-loaded"),played:e(o,"art-progress-played")}}})},setBar:function(e,i,s){if("hover"!==e&&"loaded"!==e&&"played"!==e)return;if(!Number.isFinite(i))return;const l=s*i;let p;for(const t of n)t.bars[e].style.width=l<t.start?"0px":l>t.end?"100%":(l-t.start)/(t.end-t.start)*100+"%",l>=t.start&&l<=t.end&&(p=t);if("hover"!==e)return;o();const d=r.clientWidth*i;p?.title&&d>0&&(a.textContent=p.title,a.style.visibility="visible",a.style.left=`${Math.max(0,Math.min(d-a.clientWidth/2,t.clientWidth-a.clientWidth))}px`)},destroy:function(){i(),r.remove(),a.remove()}}}(a);function i(t){if(!o||e.isDestroy)return;o.clear(),r.classList.remove(n);const a=function(t=[],e){if(!Array.isArray(t)||!t.length||!Number.isFinite(e)||e<=0)return[];t.sort((t,e)=>t.start-e.start);for(const[n,o]of t.entries()){if(!o||"number"!==typeof o.start||"number"!==typeof o.end||"string"!==typeof o.title)throw new TypeError("Illegal chapter data type");o.end===1/0&&(o.end=e);const r=t[n+1];if(!Number.isFinite(o.start)||!Number.isFinite(o.end)||o.start<0||o.end>e||o.start>=o.end||r&&o.end>r.start)throw new Error("Illegal chapter time point")}const r=t[0],a=t[t.length-1];r&&r.start>0&&t.unshift({start:0,end:r.start,title:""}),a&&a.end<e&&t.push({start:a.end,end:e,title:""});for(let n=0;n<t.length-1;n++){const e=t[n],r=t[n+1];e&&r&&e.end!==r.start&&t.splice(n+1,0,{start:e.end,end:r.start,title:""})}return t}(t,e.duration);a.length&&(o.render(a,e.duration),r.classList.add(n),e.emit("setBar","loaded",e.loaded||0))}function s(t,r){e.isDestroy||o?.setBar(t,r,e.duration)}function l(){i(t.chapters)}return e.on("setBar",s),e.once("video:loadedmetadata",l),e.on("destroy",function t(){e.off("setBar",s),e.off("video:loadedmetadata",l),e.off("destroy",t),o?.destroy(),o=void 0,r.classList.remove(n)}),{name:"artplayerPluginChapter",update:({chapters:t})=>i(t)}}}});
+!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginChapter=e(),define(function(){return t.artplayerPluginChapter})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginChapter=e()}(this,function(){"use strict";return function(){if("undefined"===typeof document)return;const t="artplayer-plugin-chapter",e=()=>{let e=document.getElementById(t);e||(e=document.createElement("style"),e.id=t,(document.head||document.documentElement).appendChild(e)),e.textContent=".artplayer-plugin-chapter .art-control-progress-inner{height:100%!important;background-color:transparent!important}.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-hover,.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-loaded,.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-played{display:none!important}.artplayer-plugin-chapter .art-control-thumbnails{bottom:calc(var(--art-bottom-gap) + 64px)!important}.artplayer-plugin-chapter .art-chapters{position:absolute;z-index:0;inset:0;display:flex;align-items:center;gap:4px;height:100%;transform:scaleY(1.25)}.artplayer-plugin-chapter .art-chapters .art-chapter{display:flex;align-items:center;height:100%}.artplayer-plugin-chapter .art-chapters .art-chapter .art-chapter-inner{position:relative;cursor:pointer;width:100%;height:50%;border-radius:10px;overflow:hidden;transition:height var(--art-transition-duration) ease;background-color:var(--art-progress-color)}.artplayer-plugin-chapter .art-chapters .art-chapter:hover .art-chapter-inner{height:100%}.artplayer-plugin-chapter .art-chapter-title{transform-origin:bottom center;transform:scale(.5);opacity:0;position:absolute;z-index:70;top:-50px;left:0;padding:3px 5px;line-height:1;font-size:14px;border-radius:var(--art-border-radius);white-space:nowrap;box-sizing:border-box;max-width:100%;overflow:hidden;text-overflow:ellipsis;background-color:var(--art-tip-background);transition:transform var(--art-transition-duration) ease,opacity var(--art-transition-duration) ease}.artplayer-plugin-chapter.art-progress-hover .art-chapter-title{transform:scale(1);opacity:1}"};document.getElementById(t)||"loading"!==document.readyState?e():document.addEventListener("DOMContentLoaded",e,{once:!0})}(),function(t={}){return e=>{const r=e.template.$player,a=e.query(".art-control-progress-inner");if(!a)throw new Error("Missing ArtPlayer progress container");const n="artplayer-plugin-chapter";let o=function(t){const e=(e,r)=>{const a=t.ownerDocument.createElement("div");return a.className=r,e.appendChild(a),a},r=e(t,"art-chapters"),a=e(t,"art-chapter-title");let n=[];function o(){a.textContent="",a.style.left="0px",a.style.visibility="hidden"}function i(){n=[],r.textContent="",o()}return o(),{clear:i,render:function(t,a){n=t.map(t=>{const n=e(r,"art-chapter"),o=e(n,"art-chapter-inner"),i=t.end-t.start;return n.dataset.start=String(t.start),n.dataset.end=String(t.end),n.dataset.duration=String(i),n.dataset.title=t.title.trim(),n.style.width=i/a*100+"%",{start:t.start,end:t.end,title:t.title.trim(),bars:{hover:e(o,"art-progress-hover"),loaded:e(o,"art-progress-loaded"),played:e(o,"art-progress-played")}}})},setBar:function(e,i,s){if("hover"!==e&&"loaded"!==e&&"played"!==e)return;if(!Number.isFinite(i))return;const l=s*i;let d;for(const t of n)t.bars[e].style.width=l<t.start?"0px":l>t.end?"100%":(l-t.start)/(t.end-t.start)*100+"%",l>=t.start&&l<=t.end&&(d=t);if("hover"!==e)return;o();const p=r.clientWidth*i;d?.title&&p>0&&(a.textContent=d.title,a.style.visibility="visible",a.style.left=`${Math.max(0,Math.min(p-a.clientWidth/2,t.clientWidth-a.clientWidth))}px`)},destroy:function(){i(),r.remove(),a.remove()}}}(a);function i(t){if(!o||e.isDestroy)return;o.clear(),r.classList.remove(n);const a=function(t=[],e){if(!Array.isArray(t)||!t.length||!Number.isFinite(e)||e<=0)return[];t.sort((t,e)=>t.start-e.start);for(const[n,o]of t.entries()){if(!o||"number"!==typeof o.start||"number"!==typeof o.end||"string"!==typeof o.title)throw new TypeError("Illegal chapter data type");o.end===1/0&&(o.end=e);const r=t[n+1];if(!Number.isFinite(o.start)||!Number.isFinite(o.end)||o.start<0||o.end>e||o.start>=o.end||r&&o.end>r.start)throw new Error("Illegal chapter time point")}const r=t[0],a=t[t.length-1];r&&r.start>0&&t.unshift({start:0,end:r.start,title:""}),a&&a.end<e&&t.push({start:a.end,end:e,title:""});for(let n=0;n<t.length-1;n++){const e=t[n],r=t[n+1];e&&r&&e.end!==r.start&&t.splice(n+1,0,{start:e.end,end:r.start,title:""})}return t}(t,e.duration);a.length&&(o.render(a,e.duration),r.classList.add(n),e.emit("setBar","loaded",e.loaded||0))}function s(t,r){e.isDestroy||o?.setBar(t,r,e.duration)}function l(){i(t.chapters)}return e.on("setBar",s),e.once("video:loadedmetadata",l),e.on("destroy",function t(){e.off("setBar",s),e.off("video:loadedmetadata",l),e.off("destroy",t),o?.destroy(),o=void 0,r.classList.remove(n)}),{name:"artplayerPluginChapter",update:({chapters:t})=>i(t)}}}});
diff --git a/packages/artplayer-plugin-chapter/dist/artplayer-plugin-chapter.legacy.js b/packages/artplayer-plugin-chapter/dist/artplayer-plugin-chapter.legacy.js
index bca6e83f4..31087aeff 100644
--- a/packages/artplayer-plugin-chapter/dist/artplayer-plugin-chapter.legacy.js
+++ b/packages/artplayer-plugin-chapter/dist/artplayer-plugin-chapter.legacy.js
@@ -4,4 +4,4 @@
  * (c) 2017-2026 Harvey Zhao
  * Released under the MIT License.
  */
-!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginChapter=e(),define(function(){return t.artplayerPluginChapter})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginChapter=e()}(this,function(){"use strict";return function(){if("undefined"===typeof document)return;const t="artplayer-plugin-chapter",e=()=>{let e=document.getElementById(t);e||(e=document.createElement("style"),e.id=t,(document.head||document.documentElement).appendChild(e)),e.textContent=".artplayer-plugin-chapter .art-control-progress-inner{height:100%!important;background-color:transparent!important}.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-hover,.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-loaded,.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-played{display:none!important}.artplayer-plugin-chapter .art-control-thumbnails{bottom:calc(var(--art-bottom-gap) + 64px)!important}.artplayer-plugin-chapter .art-chapters{position:absolute;z-index:0;inset:0;display:flex;align-items:center;gap:4px;height:100%;transform:scaleY(1.25)}.artplayer-plugin-chapter .art-chapters .art-chapter{display:flex;align-items:center;height:100%}.artplayer-plugin-chapter .art-chapters .art-chapter .art-chapter-inner{position:relative;cursor:pointer;width:100%;height:50%;border-radius:10px;overflow:hidden;transition:height var(--art-transition-duration) ease;background-color:var(--art-progress-color)}.artplayer-plugin-chapter .art-chapters .art-chapter:hover .art-chapter-inner{height:100%}.artplayer-plugin-chapter .art-chapter-title{transform-origin:bottom center;transform:scale(.5);opacity:0;position:absolute;z-index:70;top:-50px;left:0;padding:3px 5px;line-height:1;font-size:14px;border-radius:var(--art-border-radius);white-space:nowrap;background-color:var(--art-tip-background);transition:transform var(--art-transition-duration) ease,opacity var(--art-transition-duration) ease}.artplayer-plugin-chapter.art-progress-hover .art-chapter-title{transform:scale(1);opacity:1}"};document.getElementById(t)||"loading"!==document.readyState?e():document.addEventListener("DOMContentLoaded",e,{once:!0})}(),function(t={}){return e=>{const r=e.template.$player,a=e.query(".art-control-progress-inner");if(!a)throw new Error("Missing ArtPlayer progress container");const n="artplayer-plugin-chapter";let o=function(t){const e=(e,r)=>{const a=t.ownerDocument.createElement("div");return a.className=r,e.appendChild(a),a},r=e(t,"art-chapters"),a=e(t,"art-chapter-title");let n=[];function o(){a.textContent="",a.style.left="0px",a.style.visibility="hidden"}function i(){n=[],r.textContent="",o()}return o(),{clear:i,render:function(t,a){n=t.map(t=>{const n=e(r,"art-chapter"),o=e(n,"art-chapter-inner"),i=t.end-t.start;return n.dataset.start=String(t.start),n.dataset.end=String(t.end),n.dataset.duration=String(i),n.dataset.title=t.title.trim(),n.style.width=i/a*100+"%",{start:t.start,end:t.end,title:t.title.trim(),bars:{hover:e(o,"art-progress-hover"),loaded:e(o,"art-progress-loaded"),played:e(o,"art-progress-played")}}})},setBar:function(e,i,s){if("hover"!==e&&"loaded"!==e&&"played"!==e)return;if(!Number.isFinite(i))return;const l=s*i;let p;for(const t of n)t.bars[e].style.width=l<t.start?"0px":l>t.end?"100%":(l-t.start)/(t.end-t.start)*100+"%",l>=t.start&&l<=t.end&&(p=t);if("hover"!==e)return;o();const d=r.clientWidth*i;(null==p?void 0:p.title)&&d>0&&(a.textContent=p.title,a.style.visibility="visible",a.style.left=`${Math.max(0,Math.min(d-a.clientWidth/2,t.clientWidth-a.clientWidth))}px`)},destroy:function(){i(),r.remove(),a.remove()}}}(a);function i(t){if(!o||e.isDestroy)return;o.clear(),r.classList.remove(n);const a=function(t=[],e){if(!Array.isArray(t)||!t.length||!Number.isFinite(e)||e<=0)return[];t.sort((t,e)=>t.start-e.start);for(const[n,o]of t.entries()){if(!o||"number"!==typeof o.start||"number"!==typeof o.end||"string"!==typeof o.title)throw new TypeError("Illegal chapter data type");o.end===1/0&&(o.end=e);const r=t[n+1];if(!Number.isFinite(o.start)||!Number.isFinite(o.end)||o.start<0||o.end>e||o.start>=o.end||r&&o.end>r.start)throw new Error("Illegal chapter time point")}const r=t[0],a=t[t.length-1];r&&r.start>0&&t.unshift({start:0,end:r.start,title:""}),a&&a.end<e&&t.push({start:a.end,end:e,title:""});for(let n=0;n<t.length-1;n++){const e=t[n],r=t[n+1];e&&r&&e.end!==r.start&&t.splice(n+1,0,{start:e.end,end:r.start,title:""})}return t}(t,e.duration);a.length&&(o.render(a,e.duration),r.classList.add(n),e.emit("setBar","loaded",e.loaded||0))}function s(t,r){e.isDestroy||null==o||o.setBar(t,r,e.duration)}function l(){i(t.chapters)}return e.on("setBar",s),e.once("video:loadedmetadata",l),e.on("destroy",function t(){e.off("setBar",s),e.off("video:loadedmetadata",l),e.off("destroy",t),null==o||o.destroy(),o=void 0,r.classList.remove(n)}),{name:"artplayerPluginChapter",update:({chapters:t})=>i(t)}}}});
+!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginChapter=e(),define(function(){return t.artplayerPluginChapter})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginChapter=e()}(this,function(){"use strict";return function(){if("undefined"===typeof document)return;const t="artplayer-plugin-chapter",e=()=>{let e=document.getElementById(t);e||(e=document.createElement("style"),e.id=t,(document.head||document.documentElement).appendChild(e)),e.textContent=".artplayer-plugin-chapter .art-control-progress-inner{height:100%!important;background-color:transparent!important}.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-hover,.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-loaded,.artplayer-plugin-chapter .art-control-progress-inner>.art-progress-played{display:none!important}.artplayer-plugin-chapter .art-control-thumbnails{bottom:calc(var(--art-bottom-gap) + 64px)!important}.artplayer-plugin-chapter .art-chapters{position:absolute;z-index:0;inset:0;display:flex;align-items:center;gap:4px;height:100%;transform:scaleY(1.25)}.artplayer-plugin-chapter .art-chapters .art-chapter{display:flex;align-items:center;height:100%}.artplayer-plugin-chapter .art-chapters .art-chapter .art-chapter-inner{position:relative;cursor:pointer;width:100%;height:50%;border-radius:10px;overflow:hidden;transition:height var(--art-transition-duration) ease;background-color:var(--art-progress-color)}.artplayer-plugin-chapter .art-chapters .art-chapter:hover .art-chapter-inner{height:100%}.artplayer-plugin-chapter .art-chapter-title{transform-origin:bottom center;transform:scale(.5);opacity:0;position:absolute;z-index:70;top:-50px;left:0;padding:3px 5px;line-height:1;font-size:14px;border-radius:var(--art-border-radius);white-space:nowrap;box-sizing:border-box;max-width:100%;overflow:hidden;text-overflow:ellipsis;background-color:var(--art-tip-background);transition:transform var(--art-transition-duration) ease,opacity var(--art-transition-duration) ease}.artplayer-plugin-chapter.art-progress-hover .art-chapter-title{transform:scale(1);opacity:1}"};document.getElementById(t)||"loading"!==document.readyState?e():document.addEventListener("DOMContentLoaded",e,{once:!0})}(),function(t={}){return e=>{const r=e.template.$player,a=e.query(".art-control-progress-inner");if(!a)throw new Error("Missing ArtPlayer progress container");const n="artplayer-plugin-chapter";let o=function(t){const e=(e,r)=>{const a=t.ownerDocument.createElement("div");return a.className=r,e.appendChild(a),a},r=e(t,"art-chapters"),a=e(t,"art-chapter-title");let n=[];function o(){a.textContent="",a.style.left="0px",a.style.visibility="hidden"}function i(){n=[],r.textContent="",o()}return o(),{clear:i,render:function(t,a){n=t.map(t=>{const n=e(r,"art-chapter"),o=e(n,"art-chapter-inner"),i=t.end-t.start;return n.dataset.start=String(t.start),n.dataset.end=String(t.end),n.dataset.duration=String(i),n.dataset.title=t.title.trim(),n.style.width=i/a*100+"%",{start:t.start,end:t.end,title:t.title.trim(),bars:{hover:e(o,"art-progress-hover"),loaded:e(o,"art-progress-loaded"),played:e(o,"art-progress-played")}}})},setBar:function(e,i,s){if("hover"!==e&&"loaded"!==e&&"played"!==e)return;if(!Number.isFinite(i))return;const l=s*i;let d;for(const t of n)t.bars[e].style.width=l<t.start?"0px":l>t.end?"100%":(l-t.start)/(t.end-t.start)*100+"%",l>=t.start&&l<=t.end&&(d=t);if("hover"!==e)return;o();const p=r.clientWidth*i;(null==d?void 0:d.title)&&p>0&&(a.textContent=d.title,a.style.visibility="visible",a.style.left=`${Math.max(0,Math.min(p-a.clientWidth/2,t.clientWidth-a.clientWidth))}px`)},destroy:function(){i(),r.remove(),a.remove()}}}(a);function i(t){if(!o||e.isDestroy)return;o.clear(),r.classList.remove(n);const a=function(t=[],e){if(!Array.isArray(t)||!t.length||!Number.isFinite(e)||e<=0)return[];t.sort((t,e)=>t.start-e.start);for(const[n,o]of t.entries()){if(!o||"number"!==typeof o.start||"number"!==typeof o.end||"string"!==typeof o.title)throw new TypeError("Illegal chapter data type");o.end===1/0&&(o.end=e);const r=t[n+1];if(!Number.isFinite(o.start)||!Number.isFinite(o.end)||o.start<0||o.end>e||o.start>=o.end||r&&o.end>r.start)throw new Error("Illegal chapter time point")}const r=t[0],a=t[t.length-1];r&&r.start>0&&t.unshift({start:0,end:r.start,title:""}),a&&a.end<e&&t.push({start:a.end,end:e,title:""});for(let n=0;n<t.length-1;n++){const e=t[n],r=t[n+1];e&&r&&e.end!==r.start&&t.splice(n+1,0,{start:e.end,end:r.start,title:""})}return t}(t,e.duration);a.length&&(o.render(a,e.duration),r.classList.add(n),e.emit("setBar","loaded",e.loaded||0))}function s(t,r){e.isDestroy||null==o||o.setBar(t,r,e.duration)}function l(){i(t.chapters)}return e.on("setBar",s),e.once("video:loadedmetadata",l),e.on("destroy",function t(){e.off("setBar",s),e.off("video:loadedmetadata",l),e.off("destroy",t),null==o||o.destroy(),o=void 0,r.classList.remove(n)}),{name:"artplayerPluginChapter",update:({chapters:t})=>i(t)}}}});
diff --git a/packages/artplayer-plugin-chapter/dist/artplayer-plugin-chapter.mjs b/packages/artplayer-plugin-chapter/dist/artplayer-plugin-chapter.mjs
index 3282cec07..ee8cad7c8 100644
--- a/packages/artplayer-plugin-chapter/dist/artplayer-plugin-chapter.mjs
+++ b/packages/artplayer-plugin-chapter/dist/artplayer-plugin-chapter.mjs
@@ -105,7 +105,7 @@ function createProgress(inner) {
   clearTitle();
   return { clear, render, setBar, destroy };
 }
-const style = ".artplayer-plugin-chapter .art-control-progress-inner {\n  height: 100% !important;\n  background-color: transparent !important;\n}\n.artplayer-plugin-chapter .art-control-progress-inner > .art-progress-hover,\n.artplayer-plugin-chapter .art-control-progress-inner > .art-progress-loaded,\n.artplayer-plugin-chapter .art-control-progress-inner > .art-progress-played {\n  display: none !important;\n}\n.artplayer-plugin-chapter .art-control-thumbnails {\n  bottom: calc(var(--art-bottom-gap) + 64px) !important;\n}\n.artplayer-plugin-chapter .art-chapters {\n  position: absolute;\n  z-index: 0;\n  inset: 0;\n  display: flex;\n  align-items: center;\n  gap: 4px;\n  height: 100%;\n  transform: scaleY(1.25);\n}\n.artplayer-plugin-chapter .art-chapters .art-chapter {\n  display: flex;\n  align-items: center;\n  height: 100%;\n}\n.artplayer-plugin-chapter .art-chapters .art-chapter .art-chapter-inner {\n  position: relative;\n  cursor: pointer;\n  width: 100%;\n  height: 50%;\n  border-radius: 10px;\n  overflow: hidden;\n  transition: height var(--art-transition-duration) ease;\n  background-color: var(--art-progress-color);\n}\n.artplayer-plugin-chapter .art-chapters .art-chapter:hover .art-chapter-inner {\n  height: 100%;\n}\n.artplayer-plugin-chapter .art-chapter-title {\n  transform-origin: bottom center;\n  transform: scale(0.5);\n  opacity: 0;\n  position: absolute;\n  z-index: 70;\n  top: -50px;\n  left: 0;\n  padding: 3px 5px;\n  line-height: 1;\n  font-size: 14px;\n  border-radius: var(--art-border-radius);\n  white-space: nowrap;\n  background-color: var(--art-tip-background);\n  transition: transform var(--art-transition-duration) ease, opacity var(--art-transition-duration) ease;\n}\n.artplayer-plugin-chapter.art-progress-hover .art-chapter-title {\n  transform: scale(1);\n  opacity: 1;\n}\n";
+const style = ".artplayer-plugin-chapter .art-control-progress-inner {\n  height: 100% !important;\n  background-color: transparent !important;\n}\n.artplayer-plugin-chapter .art-control-progress-inner > .art-progress-hover,\n.artplayer-plugin-chapter .art-control-progress-inner > .art-progress-loaded,\n.artplayer-plugin-chapter .art-control-progress-inner > .art-progress-played {\n  display: none !important;\n}\n.artplayer-plugin-chapter .art-control-thumbnails {\n  bottom: calc(var(--art-bottom-gap) + 64px) !important;\n}\n.artplayer-plugin-chapter .art-chapters {\n  position: absolute;\n  z-index: 0;\n  inset: 0;\n  display: flex;\n  align-items: center;\n  gap: 4px;\n  height: 100%;\n  transform: scaleY(1.25);\n}\n.artplayer-plugin-chapter .art-chapters .art-chapter {\n  display: flex;\n  align-items: center;\n  height: 100%;\n}\n.artplayer-plugin-chapter .art-chapters .art-chapter .art-chapter-inner {\n  position: relative;\n  cursor: pointer;\n  width: 100%;\n  height: 50%;\n  border-radius: 10px;\n  overflow: hidden;\n  transition: height var(--art-transition-duration) ease;\n  background-color: var(--art-progress-color);\n}\n.artplayer-plugin-chapter .art-chapters .art-chapter:hover .art-chapter-inner {\n  height: 100%;\n}\n.artplayer-plugin-chapter .art-chapter-title {\n  transform-origin: bottom center;\n  transform: scale(0.5);\n  opacity: 0;\n  position: absolute;\n  z-index: 70;\n  top: -50px;\n  left: 0;\n  padding: 3px 5px;\n  line-height: 1;\n  font-size: 14px;\n  border-radius: var(--art-border-radius);\n  white-space: nowrap;\n  box-sizing: border-box;\n  max-width: 100%;\n  overflow: hidden;\n  text-overflow: ellipsis;\n  background-color: var(--art-tip-background);\n  transition: transform var(--art-transition-duration) ease, opacity var(--art-transition-duration) ease;\n}\n.artplayer-plugin-chapter.art-progress-hover .art-chapter-title {\n  transform: scale(1);\n  opacity: 1;\n}\n";
 function installStyle() {
   if (typeof document === "undefined")
     return;
diff --git a/packages/artplayer-plugin-chapter/src/style.less b/packages/artplayer-plugin-chapter/src/style.less
index 36fa114b3..48b272822 100644
--- a/packages/artplayer-plugin-chapter/src/style.less
+++ b/packages/artplayer-plugin-chapter/src/style.less
@@ -59,6 +59,10 @@
     font-size: 14px;
     border-radius: var(--art-border-radius);
     white-space: nowrap;
+    box-sizing: border-box;
+    max-width: 100%;
+    overflow: hidden;
+    text-overflow: ellipsis;
     background-color: var(--art-tip-background);
     transition:
       transform var(--art-transition-duration) ease,
diff --git a/refactor/baselines/chapter-combinations-checkpoint.json b/refactor/baselines/chapter-combinations-checkpoint.json
new file mode 100644
index 000000000..c1c4a8caa
--- /dev/null
+++ b/refactor/baselines/chapter-combinations-checkpoint.json
@@ -0,0 +1,7602 @@
+{
+  "schemaVersion": 1,
+  "task": "PKG-CHAPTER-05",
+  "baseCommit": "d18c5456",
+  "status": "incomplete",
+  "scope": "Real desktop engines, element/web fullscreen, mobile branch with emulated touch; not physical iPhone/Safari/Android or final installed package acceptance. Earlier WebKit quality timing remains unexplained.",
+  "inputs": [
+    {
+      "file": "packages/artplayer-plugin-chapter/src/style.less",
+      "sha256": "17572a96b62ba5588549edd948b879d119b97c670b40dac428839dd1160db7a8",
+      "bytes": 1766
+    },
+    {
+      "file": "packages/artplayer-plugin-chapter/src/progress.ts",
+      "sha256": "4a18d19ed703772d73622ea3fa9d433dbc2c6092ba244c9bb1ec727368996951",
+      "bytes": 2777
+    },
+    {
+      "file": "test/browser/chapter-combinations.spec.js",
+      "sha256": "308596abf9156942f462ac050fa49c36d65ab443917b9a4bb4c352d90e470f41",
+      "bytes": 12425
+    },
+    {
+      "file": "test/browser/chapter.spec.js",
+      "sha256": "d1332c5264bea179d4fd4ec3274eb0db28340bffbda3ffd37d80fc6fb636dca2",
+      "bytes": 14420
+    }
+  ],
+  "artifacts": [
+    {
+      "file": "packages/artplayer-plugin-chapter/dist/artplayer-plugin-chapter.js",
+      "sha256": "179c3ea90ddc85da27b46f000110e32d464dfa5c8c394e98316dc1b75d6f2a72",
+      "bytes": 5197
+    },
+    {
+      "file": "packages/artplayer-plugin-chapter/dist/artplayer-plugin-chapter.legacy.js",
+      "sha256": "dade919ed044cbf46ac16e505f538f86a86edccf177da2e14d79d111559d4bef",
+      "bytes": 5229
+    },
+    {
+      "file": "packages/artplayer-plugin-chapter/dist/artplayer-plugin-chapter.mjs",
+      "sha256": "754fbcfc60add74d6b6ad3bc8db253df3eb14ace13ac8a5439be0592bd5512d0",
+      "bytes": 8032
+    }
+  ],
+  "reports": [
+    {
+      "file": "refactor/.cache/chapter05-first.json",
+      "sha256": "4f5c8f1bc944cb6e72d58589e1bde2fd50374264587aaf35659f945816e06fbe",
+      "resultDir": "refactor/.cache/chapter05-first-results",
+      "stats": {
+        "startTime": "2026-09-11T20:02:47.633Z",
+        "duration": 72031.62800000001,
+        "expected": 36,
+        "skipped": 0,
+        "unexpected": 12,
+        "flaky": 0
+      },
+      "manifest": {
+        "kind": "artplayer-browser-test",
+        "resources": {
+          "/candidate/artplayer.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer\\src\\index.ts"
+            },
+            "sha256": "df495dd386d32ea96be5006e1bbfda1ea91cfeb32aa21758197b46a155ebe0dc",
+            "bytes": 378040
+          },
+          "/compiled/artplayer.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer\\src\\index.ts"
+            },
+            "sha256": "df495dd386d32ea96be5006e1bbfda1ea91cfeb32aa21758197b46a155ebe0dc",
+            "bytes": 378040,
+            "aliasOf": "/candidate/artplayer.js"
+          },
+          "/uncompiled/artplayer/index.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer\\src\\index.ts"
+            },
+            "sha256": "df495dd386d32ea96be5006e1bbfda1ea91cfeb32aa21758197b46a155ebe0dc",
+            "bytes": 378040,
+            "aliasOf": "/candidate/artplayer.js"
+          },
+          "/candidate/artplayer-plugin-chapter.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer-plugin-chapter\\src\\index.ts"
+            },
+            "sha256": "3e8d0b7e7a90b5dbadf4cb108fd770d294f8a8a92ea089c41d0766c98bbc8230",
+            "bytes": 8433
+          },
+          "/compiled/artplayer-plugin-chapter.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer-plugin-chapter\\src\\index.ts"
+            },
+            "sha256": "3e8d0b7e7a90b5dbadf4cb108fd770d294f8a8a92ea089c41d0766c98bbc8230",
+            "bytes": 8433,
+            "aliasOf": "/candidate/artplayer-plugin-chapter.js"
+          },
+          "/uncompiled/artplayer-plugin-chapter/index.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer-plugin-chapter\\src\\index.ts"
+            },
+            "sha256": "3e8d0b7e7a90b5dbadf4cb108fd770d294f8a8a92ea089c41d0766c98bbc8230",
+            "bytes": 8433,
+            "aliasOf": "/candidate/artplayer-plugin-chapter.js"
+          },
+          "/published/artplayer.js": {
+            "source": {
+              "kind": "npm-release",
+              "version": "5.4.0",
+              "integrity": "sha512-2B+plbx8N2yNsjK4nJU3+EOG8TULm1LRZk/QPkWRAMEX2Ee/MSnZG/WJYz8kcoZxZuLKcQ3uXifqLuPxZOH29A==",
+              "member": "package/dist/artplayer.js"
+            },
+            "sha256": "f1db1fa3406aa6d41baa7c554749429a8e79f99d56a794bde23345eb9c07573f",
+            "bytes": 134037
+          },
+          "/published/artplayer-plugin-chapter.js": {
+            "source": {
+              "kind": "npm-release",
+              "version": "1.1.0",
+              "integrity": "sha512-ji66Lr2K2S+OjFMuMby3yq+pefWlOC51Sbpop/DIr2N6w3F0smrF+YZbshN1Dy8/Tx1TYpT7N6WkkZWy5Jix1w==",
+              "member": "package/dist/artplayer-plugin-chapter.js"
+            },
+            "sha256": "c2aaee11bf1db765433b01d9f8dd3978e41fa4d39655db00ebd03fc0be3e35e0",
+            "bytes": 4973
+          },
+          "/test/pattern.mp4": {
+            "source": {
+              "kind": "generated-media",
+              "file": "test/browser/media/pattern.mp4"
+            },
+            "sha256": "0ad1d7ad286aec6e0fa9e27fc1e487e7277df2e603e30040fb942365763d0233",
+            "bytes": 251538
+          },
+          "/test/pattern.webm": {
+            "source": {
+              "kind": "generated-media",
+              "file": "test/browser/media/pattern.webm"
+            },
+            "sha256": "9d3c2b3dec9581a599de2d6732992ef7846790e0d1368e6e131bd339b39e984f",
+            "bytes": 162073
+          },
+          "/test/audio-tone.m4a": {
+            "source": {
+              "kind": "generated-media",
+              "file": "test/browser/media/audio-tone.m4a"
+            },
+            "sha256": "83e6672b880b5d1c97093b1e26bdc40221c0b279615f40e99dbf9d2ade7b4d56",
+            "bytes": 132436
+          },
+          "/test/declaration-cues.vtt": {
+            "source": {
+              "kind": "test-subtitles",
+              "file": "test/browser/media/declaration-cues.vtt"
+            },
+            "sha256": "5d149d4e641ce41cbb83376835c03daf1fb89f3b9f568fa59e064d51e2b57704",
+            "bytes": 54
+          },
+          "/test/thumbnail-grid.svg": {
+            "source": {
+              "kind": "test-thumbnail-grid",
+              "file": "test/browser/media/thumbnail-grid.svg"
+            },
+            "sha256": "bb3f1ec9895d37def77ca4b192d3cd73577a2668558cc99de1588f511d65d3e6",
+            "bytes": 14969
+          },
+          "/test/legacy-safe-area.js": {
+            "source": {
+              "kind": "frozen-own-source",
+              "file": "test/helpers/legacy-safe-area.js",
+              "commit": "ccf77c4e"
+            },
+            "sha256": "ce0368618ef6363b78271b8bcc7973abd0478e797cc464ddd912929e6dfa501a",
+            "bytes": 795
+          },
+          "/assets/sample/video.mp4": {
+            "source": {
+              "kind": "docs-media",
+              "file": "docs/assets/sample/video.mp4"
+            },
+            "sha256": "30a2de667ba267b6bc605edcee1c4bd728c048ed76f500ea0e73d1f1a6f8f980",
+            "bytes": 5818706
+          },
+          "/test/performance.js": {
+            "source": {
+              "kind": "adapted-baseline-fixture",
+              "file": "refactor/fixtures/performance.js"
+            },
+            "sha256": "2318f39bdb5f3a3348d755cb4335907ae4adc944be3a435839c1bba201e81500",
+            "bytes": 8994
+          }
+        }
+      },
+      "cases": [
+        {
+          "title": "published core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "chromium",
+          "status": "failed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toHaveText(expected) failed\n\nLocator:  locator('.art-chapter-title')\nExpected: \"Ending\"\nReceived: \"Middle\"\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toHaveText\" locator('.art-chapter-title') with timeout 7000ms\n  - waiting for locator('.art-chapter-title')\n    18 × locator resolved to <div class=\"art-chapter-title\">Middle</div>\n       - unexpected value \"Middle\"\n\n\n  35 |   const x = Math.round(box.x + box.width * percentage)\n  36 |   await page.mouse.move(x, box.y + box.height / 2)\n> 37 |   await expect(page.locator('.art-chapter-title')).toHaveText(text)\n     |                                                    ^\n  38 |   await expect(page.locator('.art-chapter-title')).toHaveCSS('opacity', '1')\n  39 |   await expect(page.locator('.art-control-thumbnails')).toBeVisible()\n  40 |   await expect.poll(() => page.evaluate(() => window.art.controls.thumbnails.style.backgroundImage)).not.toBe('')\n    at hoverChapter (D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:37:52)\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:93:7"
+          ],
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.006451
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.006451,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "published core + published chapter: fullscreenWeb keeps hover geometry and exits cleanly",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.484375,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "published core + published chapter: fullscreen keeps hover geometry and exits cleanly",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.484375,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "published core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "chromium",
+          "status": "failed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toHaveText(expected) failed\n\nLocator:  locator('.art-chapter-title')\nExpected: \"Ending\"\nReceived: \"\"\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toHaveText\" locator('.art-chapter-title') with timeout 7000ms\n  - waiting for locator('.art-chapter-title')\n    17 × locator resolved to <div class=\"art-chapter-title\"></div>\n       - unexpected value \"\"\n\n\n  35 |   const x = Math.round(box.x + box.width * percentage)\n  36 |   await page.mouse.move(x, box.y + box.height / 2)\n> 37 |   await expect(page.locator('.art-chapter-title')).toHaveText(text)\n     |                                                    ^\n  38 |   await expect(page.locator('.art-chapter-title')).toHaveCSS('opacity', '1')\n  39 |   await expect(page.locator('.art-control-thumbnails')).toBeVisible()\n  40 |   await expect.poll(() => page.evaluate(() => window.art.controls.thumbnails.style.backgroundImage)).not.toBe('')\n    at hoverChapter (D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:37:52)\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:93:7"
+          ],
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.006451
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.006451,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "published core + candidate chapter: fullscreenWeb keeps hover geometry and exits cleanly",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.484375,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "published core + candidate chapter: fullscreen keeps hover geometry and exits cleanly",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.484375,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "candidate core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "chromium",
+          "status": "failed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toHaveText(expected) failed\n\nLocator:  locator('.art-chapter-title')\nExpected: \"Ending\"\nReceived: \"Middle\"\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toHaveText\" locator('.art-chapter-title') with timeout 7000ms\n  - waiting for locator('.art-chapter-title')\n    17 × locator resolved to <div class=\"art-chapter-title\">Middle</div>\n       - unexpected value \"Middle\"\n\n\n  35 |   const x = Math.round(box.x + box.width * percentage)\n  36 |   await page.mouse.move(x, box.y + box.height / 2)\n> 37 |   await expect(page.locator('.art-chapter-title')).toHaveText(text)\n     |                                                    ^\n  38 |   await expect(page.locator('.art-chapter-title')).toHaveCSS('opacity', '1')\n  39 |   await expect(page.locator('.art-control-thumbnails')).toBeVisible()\n  40 |   await expect.poll(() => page.evaluate(() => window.art.controls.thumbnails.style.backgroundImage)).not.toBe('')\n    at hoverChapter (D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:37:52)\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:93:7"
+          ],
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.006451
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.006451,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + published chapter: fullscreenWeb keeps hover geometry and exits cleanly",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.484375,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "candidate core + published chapter: fullscreen keeps hover geometry and exits cleanly",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.484375,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "chromium",
+          "status": "failed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toHaveText(expected) failed\n\nLocator:  locator('.art-chapter-title')\nExpected: \"Ending\"\nReceived: \"\"\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toHaveText\" locator('.art-chapter-title') with timeout 7000ms\n  - waiting for locator('.art-chapter-title')\n    17 × locator resolved to <div class=\"art-chapter-title\"></div>\n       - unexpected value \"\"\n\n\n  35 |   const x = Math.round(box.x + box.width * percentage)\n  36 |   await page.mouse.move(x, box.y + box.height / 2)\n> 37 |   await expect(page.locator('.art-chapter-title')).toHaveText(text)\n     |                                                    ^\n  38 |   await expect(page.locator('.art-chapter-title')).toHaveCSS('opacity', '1')\n  39 |   await expect(page.locator('.art-control-thumbnails')).toBeVisible()\n  40 |   await expect.poll(() => page.evaluate(() => window.art.controls.thumbnails.style.backgroundImage)).not.toBe('')\n    at hoverChapter (D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:37:52)\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:93:7"
+          ],
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.006451
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.006451,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: fullscreenWeb keeps hover geometry and exits cleanly",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.484375,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: fullscreen keeps hover geometry and exits cleanly",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.484375,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "published core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "firefox",
+          "status": "failed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toHaveText(expected) failed\n\nLocator:  locator('.art-chapter-title')\nExpected: \"Ending\"\nReceived: \"Middle\"\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toHaveText\" locator('.art-chapter-title') with timeout 7000ms\n  - waiting for locator('.art-chapter-title')\n    18 × locator resolved to <div class=\"art-chapter-title\">Middle</div>\n       - unexpected value \"Middle\"\n\n\n  35 |   const x = Math.round(box.x + box.width * percentage)\n  36 |   await page.mouse.move(x, box.y + box.height / 2)\n> 37 |   await expect(page.locator('.art-chapter-title')).toHaveText(text)\n     |                                                    ^\n  38 |   await expect(page.locator('.art-chapter-title')).toHaveCSS('opacity', '1')\n  39 |   await expect(page.locator('.art-control-thumbnails')).toBeVisible()\n  40 |   await expect.poll(() => page.evaluate(() => window.art.controls.thumbnails.style.backgroundImage)).not.toBe('')\n    at hoverChapter (D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:37:52)\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:93:7"
+          ],
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.0064516129032257,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "published core + published chapter: fullscreenWeb keeps hover geometry and exits cleanly",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.5,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "published core + published chapter: fullscreen keeps hover geometry and exits cleanly",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 654.5,
+              "right": 711.5,
+              "top": 645,
+              "bottom": 665
+            },
+            "thumbnail": {
+              "left": 633,
+              "right": 733,
+              "top": 579,
+              "bottom": 639
+            },
+            "progress": {
+              "left": 10,
+              "right": 1356,
+              "top": 695,
+              "bottom": 703
+            }
+          }
+        },
+        {
+          "title": "published core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "firefox",
+          "status": "failed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toHaveText(expected) failed\n\nLocator:  locator('.art-chapter-title')\nExpected: \"Ending\"\nReceived: \"\"\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toHaveText\" locator('.art-chapter-title') with timeout 7000ms\n  - waiting for locator('.art-chapter-title')\n    17 × locator resolved to <div class=\"art-chapter-title\"></div>\n       - unexpected value \"\"\n\n\n  35 |   const x = Math.round(box.x + box.width * percentage)\n  36 |   await page.mouse.move(x, box.y + box.height / 2)\n> 37 |   await expect(page.locator('.art-chapter-title')).toHaveText(text)\n     |                                                    ^\n  38 |   await expect(page.locator('.art-chapter-title')).toHaveCSS('opacity', '1')\n  39 |   await expect(page.locator('.art-control-thumbnails')).toBeVisible()\n  40 |   await expect.poll(() => page.evaluate(() => window.art.controls.thumbnails.style.backgroundImage)).not.toBe('')\n    at hoverChapter (D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:37:52)\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:93:7"
+          ],
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.0064516129032257,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "published core + candidate chapter: fullscreenWeb keeps hover geometry and exits cleanly",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.5,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "published core + candidate chapter: fullscreen keeps hover geometry and exits cleanly",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 654.5,
+              "right": 711.5,
+              "top": 645,
+              "bottom": 665
+            },
+            "thumbnail": {
+              "left": 633,
+              "right": 733,
+              "top": 579,
+              "bottom": 639
+            },
+            "progress": {
+              "left": 10,
+              "right": 1356,
+              "top": 695,
+              "bottom": 703
+            }
+          }
+        },
+        {
+          "title": "candidate core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "firefox",
+          "status": "failed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toHaveText(expected) failed\n\nLocator:  locator('.art-chapter-title')\nExpected: \"Ending\"\nReceived: \"Middle\"\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toHaveText\" locator('.art-chapter-title') with timeout 7000ms\n  - waiting for locator('.art-chapter-title')\n    18 × locator resolved to <div class=\"art-chapter-title\">Middle</div>\n       - unexpected value \"Middle\"\n\n\n  35 |   const x = Math.round(box.x + box.width * percentage)\n  36 |   await page.mouse.move(x, box.y + box.height / 2)\n> 37 |   await expect(page.locator('.art-chapter-title')).toHaveText(text)\n     |                                                    ^\n  38 |   await expect(page.locator('.art-chapter-title')).toHaveCSS('opacity', '1')\n  39 |   await expect(page.locator('.art-control-thumbnails')).toBeVisible()\n  40 |   await expect.poll(() => page.evaluate(() => window.art.controls.thumbnails.style.backgroundImage)).not.toBe('')\n    at hoverChapter (D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:37:52)\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:93:7"
+          ],
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.0064516129032257,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + published chapter: fullscreenWeb keeps hover geometry and exits cleanly",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.5,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "candidate core + published chapter: fullscreen keeps hover geometry and exits cleanly",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 654.5,
+              "right": 711.5,
+              "top": 645,
+              "bottom": 665
+            },
+            "thumbnail": {
+              "left": 633,
+              "right": 733,
+              "top": 579,
+              "bottom": 639
+            },
+            "progress": {
+              "left": 10,
+              "right": 1356,
+              "top": 695,
+              "bottom": 703
+            }
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "firefox",
+          "status": "failed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toHaveText(expected) failed\n\nLocator:  locator('.art-chapter-title')\nExpected: \"Ending\"\nReceived: \"\"\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toHaveText\" locator('.art-chapter-title') with timeout 7000ms\n  - waiting for locator('.art-chapter-title')\n    17 × locator resolved to <div class=\"art-chapter-title\"></div>\n       - unexpected value \"\"\n\n\n  35 |   const x = Math.round(box.x + box.width * percentage)\n  36 |   await page.mouse.move(x, box.y + box.height / 2)\n> 37 |   await expect(page.locator('.art-chapter-title')).toHaveText(text)\n     |                                                    ^\n  38 |   await expect(page.locator('.art-chapter-title')).toHaveCSS('opacity', '1')\n  39 |   await expect(page.locator('.art-control-thumbnails')).toBeVisible()\n  40 |   await expect.poll(() => page.evaluate(() => window.art.controls.thumbnails.style.backgroundImage)).not.toBe('')\n    at hoverChapter (D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:37:52)\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:93:7"
+          ],
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.0064516129032257,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: fullscreenWeb keeps hover geometry and exits cleanly",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.5,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: fullscreen keeps hover geometry and exits cleanly",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 654.5,
+              "right": 711.5,
+              "top": 645,
+              "bottom": 665
+            },
+            "thumbnail": {
+              "left": 633,
+              "right": 733,
+              "top": 579,
+              "bottom": 639
+            },
+            "progress": {
+              "left": 10,
+              "right": 1356,
+              "top": 695,
+              "bottom": 703
+            }
+          }
+        },
+        {
+          "title": "published core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "webkit",
+          "status": "failed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(received).toBeCloseTo(expected, precision)\n\nExpected: 3.0090506\nReceived: 0.0014054\n\nExpected precision:    1\nExpected difference: < 0.05\nReceived difference:   3.0076452000000002\n\n  88 |       await expect.poll(() => page.evaluate(() => window.chapterEvents.filter(event => event.name === 'restart').map(event => event.value))).toEqual(['/test/pattern.mp4?quality=A'])\n  89 |       await expect.poll(() => page.evaluate(() => !window.art.video.seeking && window.art.video.readyState >= 2)).toBe(true)\n> 90 |       expect(await page.evaluate(() => window.art.currentTime)).toBeCloseTo(time, 1)\n     |                                                                 ^\n  91 |       expect(await page.evaluate(() => window.art.video.paused)).toBe(true)\n  92 |       await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')\n  93 |       await hoverChapter(page, 0.85, 'Ending')\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:90:65"
+          ],
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 0.0014054,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "published core + published chapter: fullscreenWeb keeps hover geometry and exits cleanly",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.484375,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "published core + published chapter: fullscreen keeps hover geometry and exits cleanly",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.484375,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "published core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "webkit",
+          "status": "failed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(received).toBeCloseTo(expected, precision)\n\nExpected: 3.0085156\nReceived: 0.0012485\n\nExpected precision:    1\nExpected difference: < 0.05\nReceived difference:   3.0072671\n\n  88 |       await expect.poll(() => page.evaluate(() => window.chapterEvents.filter(event => event.name === 'restart').map(event => event.value))).toEqual(['/test/pattern.mp4?quality=A'])\n  89 |       await expect.poll(() => page.evaluate(() => !window.art.video.seeking && window.art.video.readyState >= 2)).toBe(true)\n> 90 |       expect(await page.evaluate(() => window.art.currentTime)).toBeCloseTo(time, 1)\n     |                                                                 ^\n  91 |       expect(await page.evaluate(() => window.art.video.paused)).toBe(true)\n  92 |       await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')\n  93 |       await hoverChapter(page, 0.85, 'Ending')\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:90:65"
+          ],
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 0.0012485,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "published core + candidate chapter: fullscreenWeb keeps hover geometry and exits cleanly",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.484375,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "published core + candidate chapter: fullscreen keeps hover geometry and exits cleanly",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.484375,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "candidate core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "webkit",
+          "status": "failed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toHaveText(expected) failed\n\nLocator:  locator('.art-chapter-title')\nExpected: \"Ending\"\nReceived: \"Middle\"\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toHaveText\" locator('.art-chapter-title') with timeout 7000ms\n  - waiting for locator('.art-chapter-title')\n    17 × locator resolved to <div class=\"art-chapter-title\">Middle</div>\n       - unexpected value \"Middle\"\n\n\n  35 |   const x = Math.round(box.x + box.width * percentage)\n  36 |   await page.mouse.move(x, box.y + box.height / 2)\n> 37 |   await expect(page.locator('.art-chapter-title')).toHaveText(text)\n     |                                                    ^\n  38 |   await expect(page.locator('.art-chapter-title')).toHaveCSS('opacity', '1')\n  39 |   await expect(page.locator('.art-control-thumbnails')).toBeVisible()\n  40 |   await expect.poll(() => page.evaluate(() => window.art.controls.thumbnails.style.backgroundImage)).not.toBe('')\n    at hoverChapter (D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:37:52)\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:93:7"
+          ],
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.0102866,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + published chapter: fullscreenWeb keeps hover geometry and exits cleanly",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.484375,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "candidate core + published chapter: fullscreen keeps hover geometry and exits cleanly",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.484375,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "webkit",
+          "status": "failed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toHaveText(expected) failed\n\nLocator:  locator('.art-chapter-title')\nExpected: \"Ending\"\nReceived: \"\"\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toHaveText\" locator('.art-chapter-title') with timeout 7000ms\n  - waiting for locator('.art-chapter-title')\n    17 × locator resolved to <div class=\"art-chapter-title\"></div>\n       - unexpected value \"\"\n\n\n  35 |   const x = Math.round(box.x + box.width * percentage)\n  36 |   await page.mouse.move(x, box.y + box.height / 2)\n> 37 |   await expect(page.locator('.art-chapter-title')).toHaveText(text)\n     |                                                    ^\n  38 |   await expect(page.locator('.art-chapter-title')).toHaveCSS('opacity', '1')\n  39 |   await expect(page.locator('.art-control-thumbnails')).toBeVisible()\n  40 |   await expect.poll(() => page.evaluate(() => window.art.controls.thumbnails.style.backgroundImage)).not.toBe('')\n    at hoverChapter (D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:37:52)\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:93:7"
+          ],
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.0076268,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: fullscreenWeb keeps hover geometry and exits cleanly",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.484375,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: fullscreen keeps hover geometry and exits cleanly",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.484375,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        }
+      ]
+    },
+    {
+      "file": "refactor/.cache/chapter05-quality-corrected.json",
+      "sha256": "3ec6666beca780467f70c5b9ed395fe4a8452f87d09fce9feeaae04a9cb28603",
+      "resultDir": "refactor/.cache/chapter05-quality-corrected-results",
+      "stats": {
+        "startTime": "2026-09-11T20:05:16.339Z",
+        "duration": 56382.548,
+        "expected": 0,
+        "skipped": 0,
+        "unexpected": 12,
+        "flaky": 0
+      },
+      "manifest": {
+        "kind": "artplayer-browser-test",
+        "resources": {
+          "/candidate/artplayer.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer\\src\\index.ts"
+            },
+            "sha256": "df495dd386d32ea96be5006e1bbfda1ea91cfeb32aa21758197b46a155ebe0dc",
+            "bytes": 378040
+          },
+          "/compiled/artplayer.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer\\src\\index.ts"
+            },
+            "sha256": "df495dd386d32ea96be5006e1bbfda1ea91cfeb32aa21758197b46a155ebe0dc",
+            "bytes": 378040,
+            "aliasOf": "/candidate/artplayer.js"
+          },
+          "/uncompiled/artplayer/index.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer\\src\\index.ts"
+            },
+            "sha256": "df495dd386d32ea96be5006e1bbfda1ea91cfeb32aa21758197b46a155ebe0dc",
+            "bytes": 378040,
+            "aliasOf": "/candidate/artplayer.js"
+          },
+          "/candidate/artplayer-plugin-chapter.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer-plugin-chapter\\src\\index.ts"
+            },
+            "sha256": "3e8d0b7e7a90b5dbadf4cb108fd770d294f8a8a92ea089c41d0766c98bbc8230",
+            "bytes": 8433
+          },
+          "/compiled/artplayer-plugin-chapter.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer-plugin-chapter\\src\\index.ts"
+            },
+            "sha256": "3e8d0b7e7a90b5dbadf4cb108fd770d294f8a8a92ea089c41d0766c98bbc8230",
+            "bytes": 8433,
+            "aliasOf": "/candidate/artplayer-plugin-chapter.js"
+          },
+          "/uncompiled/artplayer-plugin-chapter/index.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer-plugin-chapter\\src\\index.ts"
+            },
+            "sha256": "3e8d0b7e7a90b5dbadf4cb108fd770d294f8a8a92ea089c41d0766c98bbc8230",
+            "bytes": 8433,
+            "aliasOf": "/candidate/artplayer-plugin-chapter.js"
+          },
+          "/published/artplayer.js": {
+            "source": {
+              "kind": "npm-release",
+              "version": "5.4.0",
+              "integrity": "sha512-2B+plbx8N2yNsjK4nJU3+EOG8TULm1LRZk/QPkWRAMEX2Ee/MSnZG/WJYz8kcoZxZuLKcQ3uXifqLuPxZOH29A==",
+              "member": "package/dist/artplayer.js"
+            },
+            "sha256": "f1db1fa3406aa6d41baa7c554749429a8e79f99d56a794bde23345eb9c07573f",
+            "bytes": 134037
+          },
+          "/published/artplayer-plugin-chapter.js": {
+            "source": {
+              "kind": "npm-release",
+              "version": "1.1.0",
+              "integrity": "sha512-ji66Lr2K2S+OjFMuMby3yq+pefWlOC51Sbpop/DIr2N6w3F0smrF+YZbshN1Dy8/Tx1TYpT7N6WkkZWy5Jix1w==",
+              "member": "package/dist/artplayer-plugin-chapter.js"
+            },
+            "sha256": "c2aaee11bf1db765433b01d9f8dd3978e41fa4d39655db00ebd03fc0be3e35e0",
+            "bytes": 4973
+          },
+          "/test/pattern.mp4": {
+            "source": {
+              "kind": "generated-media",
+              "file": "test/browser/media/pattern.mp4"
+            },
+            "sha256": "0ad1d7ad286aec6e0fa9e27fc1e487e7277df2e603e30040fb942365763d0233",
+            "bytes": 251538
+          },
+          "/test/pattern.webm": {
+            "source": {
+              "kind": "generated-media",
+              "file": "test/browser/media/pattern.webm"
+            },
+            "sha256": "9d3c2b3dec9581a599de2d6732992ef7846790e0d1368e6e131bd339b39e984f",
+            "bytes": 162073
+          },
+          "/test/audio-tone.m4a": {
+            "source": {
+              "kind": "generated-media",
+              "file": "test/browser/media/audio-tone.m4a"
+            },
+            "sha256": "83e6672b880b5d1c97093b1e26bdc40221c0b279615f40e99dbf9d2ade7b4d56",
+            "bytes": 132436
+          },
+          "/test/declaration-cues.vtt": {
+            "source": {
+              "kind": "test-subtitles",
+              "file": "test/browser/media/declaration-cues.vtt"
+            },
+            "sha256": "5d149d4e641ce41cbb83376835c03daf1fb89f3b9f568fa59e064d51e2b57704",
+            "bytes": 54
+          },
+          "/test/thumbnail-grid.svg": {
+            "source": {
+              "kind": "test-thumbnail-grid",
+              "file": "test/browser/media/thumbnail-grid.svg"
+            },
+            "sha256": "bb3f1ec9895d37def77ca4b192d3cd73577a2668558cc99de1588f511d65d3e6",
+            "bytes": 14969
+          },
+          "/test/legacy-safe-area.js": {
+            "source": {
+              "kind": "frozen-own-source",
+              "file": "test/helpers/legacy-safe-area.js",
+              "commit": "ccf77c4e"
+            },
+            "sha256": "ce0368618ef6363b78271b8bcc7973abd0478e797cc464ddd912929e6dfa501a",
+            "bytes": 795
+          },
+          "/assets/sample/video.mp4": {
+            "source": {
+              "kind": "docs-media",
+              "file": "docs/assets/sample/video.mp4"
+            },
+            "sha256": "30a2de667ba267b6bc605edcee1c4bd728c048ed76f500ea0e73d1f1a6f8f980",
+            "bytes": 5818706
+          },
+          "/test/performance.js": {
+            "source": {
+              "kind": "adapted-baseline-fixture",
+              "file": "refactor/fixtures/performance.js"
+            },
+            "sha256": "2318f39bdb5f3a3348d755cb4335907ae4adc944be3a435839c1bba201e81500",
+            "bytes": 8994
+          }
+        }
+      },
+      "cases": [
+        {
+          "title": "published core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "chromium",
+          "status": "failed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toBeHidden() failed\n\nLocator:  locator('.art-control-quality .art-selector-list')\nExpected: hidden\nReceived: visible\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toBeHidden\" locator('.art-control-quality .art-selector-list') with timeout 7000ms\n  - waiting for locator('.art-control-quality .art-selector-list')\n    18 × locator resolved to <div class=\"art-selector-list\">…</div>\n       - unexpected value \"visible\"\n\n\n  102 |       await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')\n  103 |       await page.locator('video').hover({ position: { x: 10, y: 10 } })\n> 104 |       await expect(page.locator('.art-control-quality .art-selector-list')).toBeHidden()\n      |                                                                             ^\n  105 |       await hoverChapter(page, 0.85, 'Ending')\n  106 |       await page.evaluate(() => window.art.plugins.artplayerPluginChapter.update({ chapters: [{ start: 0, end: Infinity, title: 'Updated after quality' }] }))\n  107 |       await hoverChapter(page, 0.5, 'Updated after quality')\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:104:77"
+          ],
+          "quality-position": {
+            "before": 3.006451,
+            "restoredTime": 3.006451,
+            "historicalReset": false
+          },
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.006451
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.006451,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "published core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "chromium",
+          "status": "failed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toBeHidden() failed\n\nLocator:  locator('.art-control-quality .art-selector-list')\nExpected: hidden\nReceived: visible\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toBeHidden\" locator('.art-control-quality .art-selector-list') with timeout 7000ms\n  - waiting for locator('.art-control-quality .art-selector-list')\n    18 × locator resolved to <div class=\"art-selector-list\">…</div>\n       - unexpected value \"visible\"\n\n\n  102 |       await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')\n  103 |       await page.locator('video').hover({ position: { x: 10, y: 10 } })\n> 104 |       await expect(page.locator('.art-control-quality .art-selector-list')).toBeHidden()\n      |                                                                             ^\n  105 |       await hoverChapter(page, 0.85, 'Ending')\n  106 |       await page.evaluate(() => window.art.plugins.artplayerPluginChapter.update({ chapters: [{ start: 0, end: Infinity, title: 'Updated after quality' }] }))\n  107 |       await hoverChapter(page, 0.5, 'Updated after quality')\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:104:77"
+          ],
+          "quality-position": {
+            "before": 3.006451,
+            "restoredTime": 3.006451,
+            "historicalReset": false
+          },
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.006451
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.006451,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "chromium",
+          "status": "failed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toBeHidden() failed\n\nLocator:  locator('.art-control-quality .art-selector-list')\nExpected: hidden\nReceived: visible\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toBeHidden\" locator('.art-control-quality .art-selector-list') with timeout 7000ms\n  - waiting for locator('.art-control-quality .art-selector-list')\n    18 × locator resolved to <div role=\"listbox\" aria-label=\"quality\" class=\"art-selector-list\">…</div>\n       - unexpected value \"visible\"\n\n\n  102 |       await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')\n  103 |       await page.locator('video').hover({ position: { x: 10, y: 10 } })\n> 104 |       await expect(page.locator('.art-control-quality .art-selector-list')).toBeHidden()\n      |                                                                             ^\n  105 |       await hoverChapter(page, 0.85, 'Ending')\n  106 |       await page.evaluate(() => window.art.plugins.artplayerPluginChapter.update({ chapters: [{ start: 0, end: Infinity, title: 'Updated after quality' }] }))\n  107 |       await hoverChapter(page, 0.5, 'Updated after quality')\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:104:77"
+          ],
+          "quality-position": {
+            "before": 3.006451,
+            "restoredTime": 3.006451,
+            "historicalReset": false
+          },
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.006451
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.006451,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "chromium",
+          "status": "failed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toBeHidden() failed\n\nLocator:  locator('.art-control-quality .art-selector-list')\nExpected: hidden\nReceived: visible\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toBeHidden\" locator('.art-control-quality .art-selector-list') with timeout 7000ms\n  - waiting for locator('.art-control-quality .art-selector-list')\n    18 × locator resolved to <div role=\"listbox\" aria-label=\"quality\" class=\"art-selector-list\">…</div>\n       - unexpected value \"visible\"\n\n\n  102 |       await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')\n  103 |       await page.locator('video').hover({ position: { x: 10, y: 10 } })\n> 104 |       await expect(page.locator('.art-control-quality .art-selector-list')).toBeHidden()\n      |                                                                             ^\n  105 |       await hoverChapter(page, 0.85, 'Ending')\n  106 |       await page.evaluate(() => window.art.plugins.artplayerPluginChapter.update({ chapters: [{ start: 0, end: Infinity, title: 'Updated after quality' }] }))\n  107 |       await hoverChapter(page, 0.5, 'Updated after quality')\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:104:77"
+          ],
+          "quality-position": {
+            "before": 3.006451,
+            "restoredTime": 3.006451,
+            "historicalReset": false
+          },
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.006451
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.006451,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "published core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "firefox",
+          "status": "failed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toBeHidden() failed\n\nLocator:  locator('.art-control-quality .art-selector-list')\nExpected: hidden\nReceived: visible\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toBeHidden\" locator('.art-control-quality .art-selector-list') with timeout 7000ms\n  - waiting for locator('.art-control-quality .art-selector-list')\n    17 × locator resolved to <div class=\"art-selector-list\">…</div>\n       - unexpected value \"visible\"\n\n\n  102 |       await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')\n  103 |       await page.locator('video').hover({ position: { x: 10, y: 10 } })\n> 104 |       await expect(page.locator('.art-control-quality .art-selector-list')).toBeHidden()\n      |                                                                             ^\n  105 |       await hoverChapter(page, 0.85, 'Ending')\n  106 |       await page.evaluate(() => window.art.plugins.artplayerPluginChapter.update({ chapters: [{ start: 0, end: Infinity, title: 'Updated after quality' }] }))\n  107 |       await hoverChapter(page, 0.5, 'Updated after quality')\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:104:77"
+          ],
+          "quality-position": {
+            "before": 3.0064516129032257,
+            "restoredTime": 3.0064516129032257,
+            "historicalReset": false
+          },
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.0064516129032257,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "published core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "firefox",
+          "status": "failed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toBeHidden() failed\n\nLocator:  locator('.art-control-quality .art-selector-list')\nExpected: hidden\nReceived: visible\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toBeHidden\" locator('.art-control-quality .art-selector-list') with timeout 7000ms\n  - waiting for locator('.art-control-quality .art-selector-list')\n    17 × locator resolved to <div class=\"art-selector-list\">…</div>\n       - unexpected value \"visible\"\n\n\n  102 |       await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')\n  103 |       await page.locator('video').hover({ position: { x: 10, y: 10 } })\n> 104 |       await expect(page.locator('.art-control-quality .art-selector-list')).toBeHidden()\n      |                                                                             ^\n  105 |       await hoverChapter(page, 0.85, 'Ending')\n  106 |       await page.evaluate(() => window.art.plugins.artplayerPluginChapter.update({ chapters: [{ start: 0, end: Infinity, title: 'Updated after quality' }] }))\n  107 |       await hoverChapter(page, 0.5, 'Updated after quality')\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:104:77"
+          ],
+          "quality-position": {
+            "before": 3.0064516129032257,
+            "restoredTime": 3.0064516129032257,
+            "historicalReset": false
+          },
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.0064516129032257,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "firefox",
+          "status": "failed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toBeHidden() failed\n\nLocator:  locator('.art-control-quality .art-selector-list')\nExpected: hidden\nReceived: visible\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toBeHidden\" locator('.art-control-quality .art-selector-list') with timeout 7000ms\n  - waiting for locator('.art-control-quality .art-selector-list')\n    18 × locator resolved to <div role=\"listbox\" aria-label=\"quality\" class=\"art-selector-list\">…</div>\n       - unexpected value \"visible\"\n\n\n  102 |       await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')\n  103 |       await page.locator('video').hover({ position: { x: 10, y: 10 } })\n> 104 |       await expect(page.locator('.art-control-quality .art-selector-list')).toBeHidden()\n      |                                                                             ^\n  105 |       await hoverChapter(page, 0.85, 'Ending')\n  106 |       await page.evaluate(() => window.art.plugins.artplayerPluginChapter.update({ chapters: [{ start: 0, end: Infinity, title: 'Updated after quality' }] }))\n  107 |       await hoverChapter(page, 0.5, 'Updated after quality')\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:104:77"
+          ],
+          "quality-position": {
+            "before": 3.0064516129032257,
+            "restoredTime": 3.0064516129032257,
+            "historicalReset": false
+          },
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.0064516129032257,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "firefox",
+          "status": "failed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toBeHidden() failed\n\nLocator:  locator('.art-control-quality .art-selector-list')\nExpected: hidden\nReceived: visible\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toBeHidden\" locator('.art-control-quality .art-selector-list') with timeout 7000ms\n  - waiting for locator('.art-control-quality .art-selector-list')\n    17 × locator resolved to <div role=\"listbox\" aria-label=\"quality\" class=\"art-selector-list\">…</div>\n       - unexpected value \"visible\"\n\n\n  102 |       await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')\n  103 |       await page.locator('video').hover({ position: { x: 10, y: 10 } })\n> 104 |       await expect(page.locator('.art-control-quality .art-selector-list')).toBeHidden()\n      |                                                                             ^\n  105 |       await hoverChapter(page, 0.85, 'Ending')\n  106 |       await page.evaluate(() => window.art.plugins.artplayerPluginChapter.update({ chapters: [{ start: 0, end: Infinity, title: 'Updated after quality' }] }))\n  107 |       await hoverChapter(page, 0.5, 'Updated after quality')\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:104:77"
+          ],
+          "quality-position": {
+            "before": 3.0064516129032257,
+            "restoredTime": 3.0064516129032257,
+            "historicalReset": false
+          },
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.0064516129032257,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "published core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "webkit",
+          "status": "failed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toBeHidden() failed\n\nLocator:  locator('.art-control-quality .art-selector-list')\nExpected: hidden\nReceived: visible\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toBeHidden\" locator('.art-control-quality .art-selector-list') with timeout 7000ms\n  - waiting for locator('.art-control-quality .art-selector-list')\n    17 × locator resolved to <div class=\"art-selector-list\">…</div>\n       - unexpected value \"visible\"\n\n\n  102 |       await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')\n  103 |       await page.locator('video').hover({ position: { x: 10, y: 10 } })\n> 104 |       await expect(page.locator('.art-control-quality .art-selector-list')).toBeHidden()\n      |                                                                             ^\n  105 |       await hoverChapter(page, 0.85, 'Ending')\n  106 |       await page.evaluate(() => window.art.plugins.artplayerPluginChapter.update({ chapters: [{ start: 0, end: Infinity, title: 'Updated after quality' }] }))\n  107 |       await hoverChapter(page, 0.5, 'Updated after quality')\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:104:77"
+          ],
+          "quality-position": {
+            "before": 3.0076677,
+            "restoredTime": 0.0004156,
+            "historicalReset": true
+          },
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 0.0004156,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "published core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "webkit",
+          "status": "failed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toBeHidden() failed\n\nLocator:  locator('.art-control-quality .art-selector-list')\nExpected: hidden\nReceived: visible\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toBeHidden\" locator('.art-control-quality .art-selector-list') with timeout 7000ms\n  - waiting for locator('.art-control-quality .art-selector-list')\n    17 × locator resolved to <div class=\"art-selector-list\">…</div>\n       - unexpected value \"visible\"\n\n\n  102 |       await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')\n  103 |       await page.locator('video').hover({ position: { x: 10, y: 10 } })\n> 104 |       await expect(page.locator('.art-control-quality .art-selector-list')).toBeHidden()\n      |                                                                             ^\n  105 |       await hoverChapter(page, 0.85, 'Ending')\n  106 |       await page.evaluate(() => window.art.plugins.artplayerPluginChapter.update({ chapters: [{ start: 0, end: Infinity, title: 'Updated after quality' }] }))\n  107 |       await hoverChapter(page, 0.5, 'Updated after quality')\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:104:77"
+          ],
+          "quality-position": {
+            "before": 3.0070677,
+            "restoredTime": 0.0017557,
+            "historicalReset": true
+          },
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 0.0017557,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "webkit",
+          "status": "failed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toBeHidden() failed\n\nLocator:  locator('.art-control-quality .art-selector-list')\nExpected: hidden\nReceived: visible\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toBeHidden\" locator('.art-control-quality .art-selector-list') with timeout 7000ms\n  - waiting for locator('.art-control-quality .art-selector-list')\n    17 × locator resolved to <div role=\"listbox\" aria-label=\"quality\" class=\"art-selector-list\">…</div>\n       - unexpected value \"visible\"\n\n\n  102 |\n  103 |     test(`${core} core + ${chapter} chapter: quality switch preserves chapter/thumbnail interactions`, async ({ page, browserName }, testInfo) => {\n> 104 |       await openChapter(page, core, chapter)\n      |                                             ^\n  105 |       await page.locator('#play').click()\n  106 |       await expect.poll(() => page.evaluate(() => window.art.currentTime)).toBeGreaterThan(0.2)\n  107 |       await page.locator('#pause').click()\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:104:77"
+          ],
+          "quality-position": {
+            "before": 3.0071428,
+            "restoredTime": 3.007844,
+            "historicalReset": false
+          },
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.007844,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "webkit",
+          "status": "failed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(received).toEqual(expected) // deep equality\n\n- Expected  - 3\n+ Received  + 1\n\n- Array [\n-   \"/test/pattern.mp4?quality=A\",\n- ]\n+ Array []\n\nCall Log:\n- Timeout 7000ms exceeded while waiting on the predicate\n\n  90 |         return { left: title.left, right: title.right, width: title.width, progressLeft: progress.left, progressRight: progress.right, text: element.textContent, dataset: element.parentElement.querySelector('.art-chapter').dataset.title }\n  91 |       })\n> 92 |       await testInfo.attach('long-chapter-layout', { contentType: 'application/json', body: JSON.stringify(layout) })\n     |                                                                                                                      ^\n  93 |       await testInfo.attach('long-chapter-title', { contentType: 'image/png', body: await page.screenshot() })\n  94 |       expect(layout.text).toBe(fullTitle.trim())\n  95 |       expect(layout.dataset).toBe(fullTitle.trim())\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:92:142"
+          ],
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.0159574,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        }
+      ]
+    },
+    {
+      "file": "refactor/.cache/chapter05-long-before.json",
+      "sha256": "af957daeada40829c6fffbc1afccf64b546bdbd2996977d5cb8b9be03ff71822",
+      "resultDir": "refactor/.cache/chapter05-long-before-results",
+      "stats": {
+        "startTime": "2026-09-11T20:06:47.188Z",
+        "duration": 11232.953,
+        "expected": 6,
+        "skipped": 0,
+        "unexpected": 6,
+        "flaky": 0
+      },
+      "manifest": {
+        "kind": "artplayer-browser-test",
+        "resources": {
+          "/candidate/artplayer.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer\\src\\index.ts"
+            },
+            "sha256": "df495dd386d32ea96be5006e1bbfda1ea91cfeb32aa21758197b46a155ebe0dc",
+            "bytes": 378040
+          },
+          "/compiled/artplayer.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer\\src\\index.ts"
+            },
+            "sha256": "df495dd386d32ea96be5006e1bbfda1ea91cfeb32aa21758197b46a155ebe0dc",
+            "bytes": 378040,
+            "aliasOf": "/candidate/artplayer.js"
+          },
+          "/uncompiled/artplayer/index.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer\\src\\index.ts"
+            },
+            "sha256": "df495dd386d32ea96be5006e1bbfda1ea91cfeb32aa21758197b46a155ebe0dc",
+            "bytes": 378040,
+            "aliasOf": "/candidate/artplayer.js"
+          },
+          "/candidate/artplayer-plugin-chapter.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer-plugin-chapter\\src\\index.ts"
+            },
+            "sha256": "3e8d0b7e7a90b5dbadf4cb108fd770d294f8a8a92ea089c41d0766c98bbc8230",
+            "bytes": 8433
+          },
+          "/compiled/artplayer-plugin-chapter.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer-plugin-chapter\\src\\index.ts"
+            },
+            "sha256": "3e8d0b7e7a90b5dbadf4cb108fd770d294f8a8a92ea089c41d0766c98bbc8230",
+            "bytes": 8433,
+            "aliasOf": "/candidate/artplayer-plugin-chapter.js"
+          },
+          "/uncompiled/artplayer-plugin-chapter/index.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer-plugin-chapter\\src\\index.ts"
+            },
+            "sha256": "3e8d0b7e7a90b5dbadf4cb108fd770d294f8a8a92ea089c41d0766c98bbc8230",
+            "bytes": 8433,
+            "aliasOf": "/candidate/artplayer-plugin-chapter.js"
+          },
+          "/published/artplayer.js": {
+            "source": {
+              "kind": "npm-release",
+              "version": "5.4.0",
+              "integrity": "sha512-2B+plbx8N2yNsjK4nJU3+EOG8TULm1LRZk/QPkWRAMEX2Ee/MSnZG/WJYz8kcoZxZuLKcQ3uXifqLuPxZOH29A==",
+              "member": "package/dist/artplayer.js"
+            },
+            "sha256": "f1db1fa3406aa6d41baa7c554749429a8e79f99d56a794bde23345eb9c07573f",
+            "bytes": 134037
+          },
+          "/published/artplayer-plugin-chapter.js": {
+            "source": {
+              "kind": "npm-release",
+              "version": "1.1.0",
+              "integrity": "sha512-ji66Lr2K2S+OjFMuMby3yq+pefWlOC51Sbpop/DIr2N6w3F0smrF+YZbshN1Dy8/Tx1TYpT7N6WkkZWy5Jix1w==",
+              "member": "package/dist/artplayer-plugin-chapter.js"
+            },
+            "sha256": "c2aaee11bf1db765433b01d9f8dd3978e41fa4d39655db00ebd03fc0be3e35e0",
+            "bytes": 4973
+          },
+          "/test/pattern.mp4": {
+            "source": {
+              "kind": "generated-media",
+              "file": "test/browser/media/pattern.mp4"
+            },
+            "sha256": "0ad1d7ad286aec6e0fa9e27fc1e487e7277df2e603e30040fb942365763d0233",
+            "bytes": 251538
+          },
+          "/test/pattern.webm": {
+            "source": {
+              "kind": "generated-media",
+              "file": "test/browser/media/pattern.webm"
+            },
+            "sha256": "9d3c2b3dec9581a599de2d6732992ef7846790e0d1368e6e131bd339b39e984f",
+            "bytes": 162073
+          },
+          "/test/audio-tone.m4a": {
+            "source": {
+              "kind": "generated-media",
+              "file": "test/browser/media/audio-tone.m4a"
+            },
+            "sha256": "83e6672b880b5d1c97093b1e26bdc40221c0b279615f40e99dbf9d2ade7b4d56",
+            "bytes": 132436
+          },
+          "/test/declaration-cues.vtt": {
+            "source": {
+              "kind": "test-subtitles",
+              "file": "test/browser/media/declaration-cues.vtt"
+            },
+            "sha256": "5d149d4e641ce41cbb83376835c03daf1fb89f3b9f568fa59e064d51e2b57704",
+            "bytes": 54
+          },
+          "/test/thumbnail-grid.svg": {
+            "source": {
+              "kind": "test-thumbnail-grid",
+              "file": "test/browser/media/thumbnail-grid.svg"
+            },
+            "sha256": "bb3f1ec9895d37def77ca4b192d3cd73577a2668558cc99de1588f511d65d3e6",
+            "bytes": 14969
+          },
+          "/test/legacy-safe-area.js": {
+            "source": {
+              "kind": "frozen-own-source",
+              "file": "test/helpers/legacy-safe-area.js",
+              "commit": "ccf77c4e"
+            },
+            "sha256": "ce0368618ef6363b78271b8bcc7973abd0478e797cc464ddd912929e6dfa501a",
+            "bytes": 795
+          },
+          "/assets/sample/video.mp4": {
+            "source": {
+              "kind": "docs-media",
+              "file": "docs/assets/sample/video.mp4"
+            },
+            "sha256": "30a2de667ba267b6bc605edcee1c4bd728c048ed76f500ea0e73d1f1a6f8f980",
+            "bytes": 5818706
+          },
+          "/test/performance.js": {
+            "source": {
+              "kind": "adapted-baseline-fixture",
+              "file": "refactor/fixtures/performance.js"
+            },
+            "sha256": "2318f39bdb5f3a3348d755cb4335907ae4adc944be3a435839c1bba201e81500",
+            "bytes": 8994
+          }
+        }
+      },
+      "cases": [
+        {
+          "title": "published core + published chapter: long titles retain text within a narrow player",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "long-chapter-layout": {
+            "left": 42.04638671875,
+            "right": 1853.42236328125,
+            "width": 1811.3759765625,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "published core + candidate chapter: long titles retain text within a narrow player",
+          "engine": "chromium",
+          "status": "failed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(received).toBeLessThanOrEqual(expected)\n\nExpected: <= 373\nReceived:    1877.46875\n\n   98 |         expect(layout.right).toBeGreaterThan(layout.progressRight)\n   99 |       else\n> 100 |         expect(layout.right).toBeLessThanOrEqual(layout.progressRight + 1)\n      |                              ^\n  101 |     })\n  102 |\n  103 |     test(`${core} core + ${chapter} chapter: quality switch preserves chapter/thumbnail interactions`, async ({ page, browserName }, testInfo) => {\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:100:30"
+          ],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 1877.46875,
+            "width": 1859.46875,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          },
+          "failureState": {
+            "events": [],
+            "time": 0,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "8",
+                "duration": "8",
+                "title": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + published chapter: long titles retain text within a narrow player",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "long-chapter-layout": {
+            "left": 42.0548095703125,
+            "right": 1853.4139404296875,
+            "width": 1811.359130859375,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: long titles retain text within a narrow player",
+          "engine": "chromium",
+          "status": "failed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(received).toBeLessThanOrEqual(expected)\n\nExpected: <= 373\nReceived:    1876.4349975585938\n\n   98 |         expect(layout.right).toBeGreaterThan(layout.progressRight)\n   99 |       else\n> 100 |         expect(layout.right).toBeLessThanOrEqual(layout.progressRight + 1)\n      |                              ^\n  101 |     })\n  102 |\n  103 |     test(`${core} core + ${chapter} chapter: quality switch preserves chapter/thumbnail interactions`, async ({ page, browserName }, testInfo) => {\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:100:30"
+          ],
+          "long-chapter-layout": {
+            "left": 19.03363037109375,
+            "right": 1876.4349975585938,
+            "width": 1857.4013671875,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          },
+          "failureState": {
+            "events": [],
+            "time": 0,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "8",
+                "duration": "8",
+                "title": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+              }
+            ]
+          }
+        },
+        {
+          "title": "published core + published chapter: long titles retain text within a narrow player",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 1877.8499755859375,
+            "width": 1859.8499755859375,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "published core + candidate chapter: long titles retain text within a narrow player",
+          "engine": "firefox",
+          "status": "failed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(received).toBeLessThanOrEqual(expected)\n\nExpected: <= 373\nReceived:    1877.8499755859375\n\n   98 |         expect(layout.right).toBeGreaterThan(layout.progressRight)\n   99 |       else\n> 100 |         expect(layout.right).toBeLessThanOrEqual(layout.progressRight + 1)\n      |                              ^\n  101 |     })\n  102 |\n  103 |     test(`${core} core + ${chapter} chapter: quality switch preserves chapter/thumbnail interactions`, async ({ page, browserName }, testInfo) => {\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:100:30"
+          ],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 1877.8499755859375,
+            "width": 1859.8499755859375,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          },
+          "failureState": {
+            "events": [],
+            "time": 0,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "8",
+                "duration": "8",
+                "title": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + published chapter: long titles retain text within a narrow player",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 1877.8499755859375,
+            "width": 1859.8499755859375,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: long titles retain text within a narrow player",
+          "engine": "firefox",
+          "status": "failed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(received).toBeLessThanOrEqual(expected)\n\nExpected: <= 373\nReceived:    1877.8499755859375\n\n   98 |         expect(layout.right).toBeGreaterThan(layout.progressRight)\n   99 |       else\n> 100 |         expect(layout.right).toBeLessThanOrEqual(layout.progressRight + 1)\n      |                              ^\n  101 |     })\n  102 |\n  103 |     test(`${core} core + ${chapter} chapter: quality switch preserves chapter/thumbnail interactions`, async ({ page, browserName }, testInfo) => {\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:100:30"
+          ],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 1877.8499755859375,
+            "width": 1859.8499755859375,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          },
+          "failureState": {
+            "events": [],
+            "time": 0,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "8",
+                "duration": "8",
+                "title": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+              }
+            ]
+          }
+        },
+        {
+          "title": "published core + published chapter: long titles retain text within a narrow player",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 1877.46875,
+            "width": 1859.46875,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "published core + candidate chapter: long titles retain text within a narrow player",
+          "engine": "webkit",
+          "status": "failed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(received).toBeLessThanOrEqual(expected)\n\nExpected: <= 373\nReceived:    1877.46875\n\n   98 |         expect(layout.right).toBeGreaterThan(layout.progressRight)\n   99 |       else\n> 100 |         expect(layout.right).toBeLessThanOrEqual(layout.progressRight + 1)\n      |                              ^\n  101 |     })\n  102 |\n  103 |     test(`${core} core + ${chapter} chapter: quality switch preserves chapter/thumbnail interactions`, async ({ page, browserName }, testInfo) => {\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:100:30"
+          ],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 1877.46875,
+            "width": 1859.46875,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          },
+          "failureState": {
+            "events": [],
+            "time": 0,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "8",
+                "duration": "8",
+                "title": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + published chapter: long titles retain text within a narrow player",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 1877.46875,
+            "width": 1859.46875,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: long titles retain text within a narrow player",
+          "engine": "webkit",
+          "status": "failed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(received).toBeLessThanOrEqual(expected)\n\nExpected: <= 373\nReceived:    1877.46875\n\n   98 |         expect(layout.right).toBeGreaterThan(layout.progressRight)\n   99 |       else\n> 100 |         expect(layout.right).toBeLessThanOrEqual(layout.progressRight + 1)\n      |                              ^\n  101 |     })\n  102 |\n  103 |     test(`${core} core + ${chapter} chapter: quality switch preserves chapter/thumbnail interactions`, async ({ page, browserName }, testInfo) => {\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:100:30"
+          ],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 1877.46875,
+            "width": 1859.46875,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          },
+          "failureState": {
+            "events": [],
+            "time": 0,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "8",
+                "duration": "8",
+                "title": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+              }
+            ]
+          }
+        }
+      ]
+    },
+    {
+      "file": "refactor/.cache/chapter05-quality-long-fixed.json",
+      "sha256": "889b28881ca8abb62e76c758b2c323f76054136740e098c9ead1de085c088b83",
+      "resultDir": "refactor/.cache/chapter05-quality-long-fixed-results",
+      "stats": {
+        "startTime": "2026-09-11T20:07:31.156Z",
+        "duration": 48410.413,
+        "expected": 17,
+        "skipped": 0,
+        "unexpected": 7,
+        "flaky": 0
+      },
+      "manifest": {
+        "kind": "artplayer-browser-test",
+        "resources": {
+          "/candidate/artplayer.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer\\src\\index.ts"
+            },
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+            "bytes": 378040
+          },
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+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer\\src\\index.ts"
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+            "sha256": "df495dd386d32ea96be5006e1bbfda1ea91cfeb32aa21758197b46a155ebe0dc",
+            "bytes": 378040,
+            "aliasOf": "/candidate/artplayer.js"
+          },
+          "/uncompiled/artplayer/index.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer\\src\\index.ts"
+            },
+            "sha256": "df495dd386d32ea96be5006e1bbfda1ea91cfeb32aa21758197b46a155ebe0dc",
+            "bytes": 378040,
+            "aliasOf": "/candidate/artplayer.js"
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+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer-plugin-chapter\\src\\index.ts"
+            },
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+            "bytes": 8529
+          },
+          "/compiled/artplayer-plugin-chapter.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer-plugin-chapter\\src\\index.ts"
+            },
+            "sha256": "1a8eb891d3690e2526e78a2e53183a25367b1d02a5fd349d821548edb731ee3a",
+            "bytes": 8529,
+            "aliasOf": "/candidate/artplayer-plugin-chapter.js"
+          },
+          "/uncompiled/artplayer-plugin-chapter/index.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer-plugin-chapter\\src\\index.ts"
+            },
+            "sha256": "1a8eb891d3690e2526e78a2e53183a25367b1d02a5fd349d821548edb731ee3a",
+            "bytes": 8529,
+            "aliasOf": "/candidate/artplayer-plugin-chapter.js"
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+              "integrity": "sha512-2B+plbx8N2yNsjK4nJU3+EOG8TULm1LRZk/QPkWRAMEX2Ee/MSnZG/WJYz8kcoZxZuLKcQ3uXifqLuPxZOH29A==",
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+            "bytes": 134037
+          },
+          "/published/artplayer-plugin-chapter.js": {
+            "source": {
+              "kind": "npm-release",
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+              "member": "package/dist/artplayer-plugin-chapter.js"
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+            "bytes": 4973
+          },
+          "/test/pattern.mp4": {
+            "source": {
+              "kind": "generated-media",
+              "file": "test/browser/media/pattern.mp4"
+            },
+            "sha256": "0ad1d7ad286aec6e0fa9e27fc1e487e7277df2e603e30040fb942365763d0233",
+            "bytes": 251538
+          },
+          "/test/pattern.webm": {
+            "source": {
+              "kind": "generated-media",
+              "file": "test/browser/media/pattern.webm"
+            },
+            "sha256": "9d3c2b3dec9581a599de2d6732992ef7846790e0d1368e6e131bd339b39e984f",
+            "bytes": 162073
+          },
+          "/test/audio-tone.m4a": {
+            "source": {
+              "kind": "generated-media",
+              "file": "test/browser/media/audio-tone.m4a"
+            },
+            "sha256": "83e6672b880b5d1c97093b1e26bdc40221c0b279615f40e99dbf9d2ade7b4d56",
+            "bytes": 132436
+          },
+          "/test/declaration-cues.vtt": {
+            "source": {
+              "kind": "test-subtitles",
+              "file": "test/browser/media/declaration-cues.vtt"
+            },
+            "sha256": "5d149d4e641ce41cbb83376835c03daf1fb89f3b9f568fa59e064d51e2b57704",
+            "bytes": 54
+          },
+          "/test/thumbnail-grid.svg": {
+            "source": {
+              "kind": "test-thumbnail-grid",
+              "file": "test/browser/media/thumbnail-grid.svg"
+            },
+            "sha256": "bb3f1ec9895d37def77ca4b192d3cd73577a2668558cc99de1588f511d65d3e6",
+            "bytes": 14969
+          },
+          "/test/legacy-safe-area.js": {
+            "source": {
+              "kind": "frozen-own-source",
+              "file": "test/helpers/legacy-safe-area.js",
+              "commit": "ccf77c4e"
+            },
+            "sha256": "ce0368618ef6363b78271b8bcc7973abd0478e797cc464ddd912929e6dfa501a",
+            "bytes": 795
+          },
+          "/assets/sample/video.mp4": {
+            "source": {
+              "kind": "docs-media",
+              "file": "docs/assets/sample/video.mp4"
+            },
+            "sha256": "30a2de667ba267b6bc605edcee1c4bd728c048ed76f500ea0e73d1f1a6f8f980",
+            "bytes": 5818706
+          },
+          "/test/performance.js": {
+            "source": {
+              "kind": "adapted-baseline-fixture",
+              "file": "refactor/fixtures/performance.js"
+            },
+            "sha256": "2318f39bdb5f3a3348d755cb4335907ae4adc944be3a435839c1bba201e81500",
+            "bytes": 8994
+          }
+        }
+      },
+      "cases": [
+        {
+          "title": "published core + published chapter: long titles retain text within a narrow player",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 1877.46875,
+            "width": 1859.46875,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "published core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "chromium",
+          "status": "failed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toBeHidden() failed\n\nLocator:  locator('.art-control-quality .art-selector-list')\nExpected: hidden\nReceived: visible\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toBeHidden\" locator('.art-control-quality .art-selector-list') with timeout 7000ms\n  - waiting for locator('.art-control-quality .art-selector-list')\n    18 × locator resolved to <div class=\"art-selector-list\">…</div>\n       - unexpected value \"visible\"\n\n\n  127 |       await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')\n  128 |       await page.locator('#pause').click()\n> 129 |       await expect(page.locator('.art-control-quality .art-selector-list')).toBeHidden()\n      |                                                                             ^\n  130 |       await hoverChapter(page, 0.85, 'Ending')\n  131 |       await page.evaluate(() => window.art.plugins.artplayerPluginChapter.update({ chapters: [{ start: 0, end: Infinity, title: 'Updated after quality' }] }))\n  132 |       await hoverChapter(page, 0.5, 'Updated after quality')\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:129:77"
+          ],
+          "quality-position": {
+            "before": 3.006451,
+            "restoredTime": 3.006451,
+            "historicalReset": false
+          },
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.006451
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.006451,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "published core + candidate chapter: long titles retain text within a narrow player",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 372,
+            "width": 354,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "published core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "chromium",
+          "status": "failed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toBeHidden() failed\n\nLocator:  locator('.art-control-quality .art-selector-list')\nExpected: hidden\nReceived: visible\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toBeHidden\" locator('.art-control-quality .art-selector-list') with timeout 7000ms\n  - waiting for locator('.art-control-quality .art-selector-list')\n    18 × locator resolved to <div class=\"art-selector-list\">…</div>\n       - unexpected value \"visible\"\n\n\n  127 |       await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')\n  128 |       await page.locator('#pause').click()\n> 129 |       await expect(page.locator('.art-control-quality .art-selector-list')).toBeHidden()\n      |                                                                             ^\n  130 |       await hoverChapter(page, 0.85, 'Ending')\n  131 |       await page.evaluate(() => window.art.plugins.artplayerPluginChapter.update({ chapters: [{ start: 0, end: Infinity, title: 'Updated after quality' }] }))\n  132 |       await hoverChapter(page, 0.5, 'Updated after quality')\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:129:77"
+          ],
+          "quality-position": {
+            "before": 3.006451,
+            "restoredTime": 3.006451,
+            "historicalReset": false
+          },
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.006451
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.006451,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + published chapter: long titles retain text within a narrow player",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "long-chapter-layout": {
+            "left": 55.527587890625,
+            "right": 1839.941162109375,
+            "width": 1784.41357421875,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "candidate core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "quality-position": {
+            "before": 3.006451,
+            "restoredTime": 3.006451,
+            "historicalReset": false
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: long titles retain text within a narrow player",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 372,
+            "width": 354,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "quality-position": {
+            "before": 3.006451,
+            "restoredTime": 3.006451,
+            "historicalReset": false
+          }
+        },
+        {
+          "title": "published core + published chapter: long titles retain text within a narrow player",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 1877.8499755859375,
+            "width": 1859.8499755859375,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "published core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "firefox",
+          "status": "failed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toBeHidden() failed\n\nLocator:  locator('.art-control-quality .art-selector-list')\nExpected: hidden\nReceived: visible\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toBeHidden\" locator('.art-control-quality .art-selector-list') with timeout 7000ms\n  - waiting for locator('.art-control-quality .art-selector-list')\n    17 × locator resolved to <div class=\"art-selector-list\">…</div>\n       - unexpected value \"visible\"\n\n\n  127 |       await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')\n  128 |       await page.locator('#pause').click()\n> 129 |       await expect(page.locator('.art-control-quality .art-selector-list')).toBeHidden()\n      |                                                                             ^\n  130 |       await hoverChapter(page, 0.85, 'Ending')\n  131 |       await page.evaluate(() => window.art.plugins.artplayerPluginChapter.update({ chapters: [{ start: 0, end: Infinity, title: 'Updated after quality' }] }))\n  132 |       await hoverChapter(page, 0.5, 'Updated after quality')\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:129:77"
+          ],
+          "quality-position": {
+            "before": 3.0064516129032257,
+            "restoredTime": 3.0064516129032257,
+            "historicalReset": false
+          },
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.0064516129032257,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "published core + candidate chapter: long titles retain text within a narrow player",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 372,
+            "width": 354,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "published core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "firefox",
+          "status": "failed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toBeHidden() failed\n\nLocator:  locator('.art-control-quality .art-selector-list')\nExpected: hidden\nReceived: visible\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toBeHidden\" locator('.art-control-quality .art-selector-list') with timeout 7000ms\n  - waiting for locator('.art-control-quality .art-selector-list')\n    18 × locator resolved to <div class=\"art-selector-list\">…</div>\n       - unexpected value \"visible\"\n\n\n  127 |       await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')\n  128 |       await page.locator('#pause').click()\n> 129 |       await expect(page.locator('.art-control-quality .art-selector-list')).toBeHidden()\n      |                                                                             ^\n  130 |       await hoverChapter(page, 0.85, 'Ending')\n  131 |       await page.evaluate(() => window.art.plugins.artplayerPluginChapter.update({ chapters: [{ start: 0, end: Infinity, title: 'Updated after quality' }] }))\n  132 |       await hoverChapter(page, 0.5, 'Updated after quality')\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:129:77"
+          ],
+          "quality-position": {
+            "before": 3.0064516129032257,
+            "restoredTime": 3.0064516129032257,
+            "historicalReset": false
+          },
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.0064516129032257,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + published chapter: long titles retain text within a narrow player",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 1877.8499755859375,
+            "width": 1859.8499755859375,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "candidate core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "quality-position": {
+            "before": 3.0064516129032257,
+            "restoredTime": 3.0064516129032257,
+            "historicalReset": false
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: long titles retain text within a narrow player",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "long-chapter-layout": {
+            "left": 20.183334350585938,
+            "right": 369.81666564941406,
+            "width": 349.6333312988281,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "quality-position": {
+            "before": 3.0064516129032257,
+            "restoredTime": 3.0064516129032257,
+            "historicalReset": false
+          }
+        },
+        {
+          "title": "published core + published chapter: long titles retain text within a narrow player",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 1877.46875,
+            "width": 1859.46875,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "published core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "webkit",
+          "status": "failed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toBeHidden() failed\n\nLocator:  locator('.art-control-quality .art-selector-list')\nExpected: hidden\nReceived: visible\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toBeHidden\" locator('.art-control-quality .art-selector-list') with timeout 7000ms\n  - waiting for locator('.art-control-quality .art-selector-list')\n    17 × locator resolved to <div class=\"art-selector-list\">…</div>\n       - unexpected value \"visible\"\n\n\n  127 |       await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')\n  128 |       await page.locator('#pause').click()\n> 129 |       await expect(page.locator('.art-control-quality .art-selector-list')).toBeHidden()\n      |                                                                             ^\n  130 |       await hoverChapter(page, 0.85, 'Ending')\n  131 |       await page.evaluate(() => window.art.plugins.artplayerPluginChapter.update({ chapters: [{ start: 0, end: Infinity, title: 'Updated after quality' }] }))\n  132 |       await hoverChapter(page, 0.5, 'Updated after quality')\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:129:77"
+          ],
+          "quality-position": {
+            "before": 3.0079177,
+            "restoredTime": 0.0023028,
+            "historicalReset": true
+          },
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 0.0023028,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "published core + candidate chapter: long titles retain text within a narrow player",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 372,
+            "width": 354,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "published core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "webkit",
+          "status": "failed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(locator).toBeHidden() failed\n\nLocator:  locator('.art-control-quality .art-selector-list')\nExpected: hidden\nReceived: visible\nTimeout:  7000ms\n\nCall log:\n  - Expect \"toBeHidden\" locator('.art-control-quality .art-selector-list') with timeout 7000ms\n  - waiting for locator('.art-control-quality .art-selector-list')\n    17 × locator resolved to <div class=\"art-selector-list\">…</div>\n       - unexpected value \"visible\"\n\n\n  127 |       await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')\n  128 |       await page.locator('#pause').click()\n> 129 |       await expect(page.locator('.art-control-quality .art-selector-list')).toBeHidden()\n      |                                                                             ^\n  130 |       await hoverChapter(page, 0.85, 'Ending')\n  131 |       await page.evaluate(() => window.art.plugins.artplayerPluginChapter.update({ chapters: [{ start: 0, end: Infinity, title: 'Updated after quality' }] }))\n  132 |       await hoverChapter(page, 0.5, 'Updated after quality')\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:129:77"
+          ],
+          "quality-position": {
+            "before": 3.0084229,
+            "restoredTime": 0.0010478,
+            "historicalReset": true
+          },
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 0.0010478,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + published chapter: long titles retain text within a narrow player",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 1877.46875,
+            "width": 1859.46875,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "candidate core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "webkit",
+          "status": "failed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(received).toEqual(expected) // deep equality\n\n- Expected  - 3\n+ Received  + 1\n\n- Array [\n-   \"/test/pattern.mp4?quality=A\",\n- ]\n+ Array []\n\nCall Log:\n- Timeout 7000ms exceeded while waiting on the predicate\n\n  115 |       await page.locator('.art-control-quality').hover()\n  116 |       await page.locator('.art-control-quality .art-selector-item').filter({ hasText: 'Quality A' }).click()\n> 117 |       await expect.poll(() => page.evaluate(() => window.chapterEvents.filter(event => event.name === 'restart').map(event => event.value))).toEqual(['/test/pattern.mp4?quality=A'])\n      |                                                                                                                                              ^\n  118 |       await expect.poll(() => page.evaluate(() => !window.art.video.seeking && window.art.video.readyState >= 2)).toBe(true)\n  119 |       const restoredTime = await page.evaluate(() => window.art.currentTime)\n  120 |       const historicalReset = core === 'published' && browserName === 'webkit'\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:117:142"
+          ],
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "time": 3.0115191,
+            "paused": true,
+            "mediaError": null,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: long titles retain text within a narrow player",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "long-chapter-layout": {
+            "left": 18,
+            "right": 372,
+            "width": 354,
+            "progressLeft": 18,
+            "progressRight": 372,
+            "text": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers.",
+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "quality-position": {
+            "before": 3.0093409,
+            "restoredTime": 3.0135819,
+            "historicalReset": false
+          }
+        }
+      ]
+    },
+    {
+      "file": "refactor/.cache/chapter05-quality-ready.json",
+      "sha256": "7e838f1809d5a6a37b78686521d5fe0066a6c6c82e1908f15b5b16b0b24ccf96",
+      "resultDir": "refactor/.cache/chapter05-quality-ready-results",
+      "stats": {
+        "startTime": "2026-09-11T20:09:14.622Z",
+        "duration": 34038.771,
+        "expected": 11,
+        "skipped": 0,
+        "unexpected": 1,
+        "flaky": 0
+      },
+      "manifest": {
+        "kind": "artplayer-browser-test",
+        "resources": {
+          "/candidate/artplayer.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer\\src\\index.ts"
+            },
+            "sha256": "df495dd386d32ea96be5006e1bbfda1ea91cfeb32aa21758197b46a155ebe0dc",
+            "bytes": 378040
+          },
+          "/compiled/artplayer.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer\\src\\index.ts"
+            },
+            "sha256": "df495dd386d32ea96be5006e1bbfda1ea91cfeb32aa21758197b46a155ebe0dc",
+            "bytes": 378040,
+            "aliasOf": "/candidate/artplayer.js"
+          },
+          "/uncompiled/artplayer/index.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer\\src\\index.ts"
+            },
+            "sha256": "df495dd386d32ea96be5006e1bbfda1ea91cfeb32aa21758197b46a155ebe0dc",
+            "bytes": 378040,
+            "aliasOf": "/candidate/artplayer.js"
+          },
+          "/candidate/artplayer-plugin-chapter.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer-plugin-chapter\\src\\index.ts"
+            },
+            "sha256": "1a8eb891d3690e2526e78a2e53183a25367b1d02a5fd349d821548edb731ee3a",
+            "bytes": 8529
+          },
+          "/compiled/artplayer-plugin-chapter.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer-plugin-chapter\\src\\index.ts"
+            },
+            "sha256": "1a8eb891d3690e2526e78a2e53183a25367b1d02a5fd349d821548edb731ee3a",
+            "bytes": 8529,
+            "aliasOf": "/candidate/artplayer-plugin-chapter.js"
+          },
+          "/uncompiled/artplayer-plugin-chapter/index.js": {
+            "source": {
+              "kind": "workspace-build",
+              "entry": "packages\\artplayer-plugin-chapter\\src\\index.ts"
+            },
+            "sha256": "1a8eb891d3690e2526e78a2e53183a25367b1d02a5fd349d821548edb731ee3a",
+            "bytes": 8529,
+            "aliasOf": "/candidate/artplayer-plugin-chapter.js"
+          },
+          "/published/artplayer.js": {
+            "source": {
+              "kind": "npm-release",
+              "version": "5.4.0",
+              "integrity": "sha512-2B+plbx8N2yNsjK4nJU3+EOG8TULm1LRZk/QPkWRAMEX2Ee/MSnZG/WJYz8kcoZxZuLKcQ3uXifqLuPxZOH29A==",
+              "member": "package/dist/artplayer.js"
+            },
+            "sha256": "f1db1fa3406aa6d41baa7c554749429a8e79f99d56a794bde23345eb9c07573f",
+            "bytes": 134037
+          },
+          "/published/artplayer-plugin-chapter.js": {
+            "source": {
+              "kind": "npm-release",
+              "version": "1.1.0",
+              "integrity": "sha512-ji66Lr2K2S+OjFMuMby3yq+pefWlOC51Sbpop/DIr2N6w3F0smrF+YZbshN1Dy8/Tx1TYpT7N6WkkZWy5Jix1w==",
+              "member": "package/dist/artplayer-plugin-chapter.js"
+            },
+            "sha256": "c2aaee11bf1db765433b01d9f8dd3978e41fa4d39655db00ebd03fc0be3e35e0",
+            "bytes": 4973
+          },
+          "/test/pattern.mp4": {
+            "source": {
+              "kind": "generated-media",
+              "file": "test/browser/media/pattern.mp4"
+            },
+            "sha256": "0ad1d7ad286aec6e0fa9e27fc1e487e7277df2e603e30040fb942365763d0233",
+            "bytes": 251538
+          },
+          "/test/pattern.webm": {
+            "source": {
+              "kind": "generated-media",
+              "file": "test/browser/media/pattern.webm"
+            },
+            "sha256": "9d3c2b3dec9581a599de2d6732992ef7846790e0d1368e6e131bd339b39e984f",
+            "bytes": 162073
+          },
+          "/test/audio-tone.m4a": {
+            "source": {
+              "kind": "generated-media",
+              "file": "test/browser/media/audio-tone.m4a"
+            },
+            "sha256": "83e6672b880b5d1c97093b1e26bdc40221c0b279615f40e99dbf9d2ade7b4d56",
+            "bytes": 132436
+          },
+          "/test/declaration-cues.vtt": {
+            "source": {
+              "kind": "test-subtitles",
+              "file": "test/browser/media/declaration-cues.vtt"
+            },
+            "sha256": "5d149d4e641ce41cbb83376835c03daf1fb89f3b9f568fa59e064d51e2b57704",
+            "bytes": 54
+          },
+          "/test/thumbnail-grid.svg": {
+            "source": {
+              "kind": "test-thumbnail-grid",
+              "file": "test/browser/media/thumbnail-grid.svg"
+            },
+            "sha256": "bb3f1ec9895d37def77ca4b192d3cd73577a2668558cc99de1588f511d65d3e6",
+            "bytes": 14969
+          },
+          "/test/legacy-safe-area.js": {
+            "source": {
+              "kind": "frozen-own-source",
+              "file": "test/helpers/legacy-safe-area.js",
+              "commit": "ccf77c4e"
+            },
+            "sha256": "ce0368618ef6363b78271b8bcc7973abd0478e797cc464ddd912929e6dfa501a",
+            "bytes": 795
+          },
+          "/assets/sample/video.mp4": {
+            "source": {
+              "kind": "docs-media",
+              "file": "docs/assets/sample/video.mp4"
+            },
+            "sha256": "30a2de667ba267b6bc605edcee1c4bd728c048ed76f500ea0e73d1f1a6f8f980",
+            "bytes": 5818706
+          },
+          "/test/performance.js": {
+            "source": {
+              "kind": "adapted-baseline-fixture",
+              "file": "refactor/fixtures/performance.js"
+            },
+            "sha256": "2318f39bdb5f3a3348d755cb4335907ae4adc944be3a435839c1bba201e81500",
+            "bytes": 8994
+          }
+        }
+      },
+      "cases": [
+        {
+          "title": "published core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "quality-position": {
+            "before": 3.006451,
+            "restoredTime": 3.006451,
+            "historicalReset": false
+          }
+        },
+        {
+          "title": "published core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "quality-position": {
+            "before": 3.006451,
+            "restoredTime": 3.006451,
+            "historicalReset": false
+          }
+        },
+        {
+          "title": "candidate core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "quality-position": {
+            "before": 3.006451,
+            "restoredTime": 3.006451,
+            "historicalReset": false
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": [],
+          "quality-position": {
+            "before": 3.006451,
+            "restoredTime": 3.006451,
+            "historicalReset": false
+          }
+        },
+        {
+          "title": "published core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "quality-position": {
+            "before": 3.0064516129032257,
+            "restoredTime": 3.0064516129032257,
+            "historicalReset": false
+          }
+        },
+        {
+          "title": "published core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "quality-position": {
+            "before": 3.0064516129032257,
+            "restoredTime": 3.0064516129032257,
+            "historicalReset": false
+          }
+        },
+        {
+          "title": "candidate core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "quality-position": {
+            "before": 3.0064516129032257,
+            "restoredTime": 3.0064516129032257,
+            "historicalReset": false
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": [],
+          "quality-position": {
+            "before": 3.0064516129032257,
+            "restoredTime": 3.0064516129032257,
+            "historicalReset": false
+          }
+        },
+        {
+          "title": "published core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "quality-position": {
+            "before": 3.0071684,
+            "restoredTime": 0.001508,
+            "historicalReset": true
+          }
+        },
+        {
+          "title": "published core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "quality-position": {
+            "before": 3.0075852,
+            "restoredTime": 0.0017081,
+            "historicalReset": true
+          }
+        },
+        {
+          "title": "candidate core + published chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "quality-position": {
+            "before": 3.0091097,
+            "restoredTime": 3.0121734,
+            "historicalReset": false
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "webkit",
+          "status": "failed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [
+            "Error: expect(received).toEqual(expected) // deep equality\n\n- Expected  - 3\n+ Received  + 1\n\n- Array [\n-   \"/test/pattern.mp4?quality=A\",\n- ]\n+ Array []\n\nCall Log:\n- Timeout 7000ms exceeded while waiting on the predicate\n\n  124 |       await page.locator('.art-control-quality .art-selector-item').filter({ hasText: 'Quality A' }).click()\n  125 |       await expect.poll(() => page.evaluate(() => window.art.url.includes('quality=A'))).toBe(true)\n> 126 |       await expect.poll(() => page.evaluate(() => window.chapterEvents.filter(event => event.name === 'restart').map(event => event.value))).toEqual(['/test/pattern.mp4?quality=A'])\n      |                                                                                                                                              ^\n  127 |       await expect.poll(() => page.evaluate(() => !window.art.video.seeking && window.art.video.readyState >= 2)).toBe(true)\n  128 |       const restoredTime = await page.evaluate(() => window.art.currentTime)\n  129 |       const historicalReset = core === 'published' && browserName === 'webkit'\n    at D:\\github\\ArtPlayer\\test\\browser\\chapter-combinations.spec.js:126:142"
+          ],
+          "failureState": {
+            "events": [
+              {
+                "name": "seek",
+                "value": 3.0064516129032257
+              },
+              {
+                "name": "restart",
+                "value": "/test/pattern.mp4?quality=A"
+              }
+            ],
+            "nativeEvents": [
+              {
+                "name": "loadedmetadata",
+                "time": 0,
+                "source": "http://127.0.0.1:8084/test/pattern.mp4?quality=B",
+                "paused": true,
+                "readyState": 4
+              },
+              {
+                "name": "loadeddata",
+                "time": 0,
+                "source": "http://127.0.0.1:8084/test/pattern.mp4?quality=B",
+                "paused": true,
+                "readyState": 4
+              },
+              {
+                "name": "canplay",
+                "time": 0,
+                "source": "http://127.0.0.1:8084/test/pattern.mp4?quality=B",
+                "paused": true,
+                "readyState": 4
+              },
+              {
+                "name": "playing",
+                "time": 0.0050301,
+                "source": "http://127.0.0.1:8084/test/pattern.mp4?quality=B",
+                "paused": false,
+                "readyState": 4
+              },
+              {
+                "name": "pause",
+                "time": 0.6299045,
+                "source": "http://127.0.0.1:8084/test/pattern.mp4?quality=B",
+                "paused": true,
+                "readyState": 4
+              },
+              {
+                "name": "seeking",
+                "time": 3.0064516129032257,
+                "source": "http://127.0.0.1:8084/test/pattern.mp4?quality=B",
+                "paused": true,
+                "readyState": 4
+              },
+              {
+                "name": "seeked",
+                "time": 3.0086859,
+                "source": "http://127.0.0.1:8084/test/pattern.mp4?quality=B",
+                "paused": true,
+                "readyState": 4
+              },
+              {
+                "name": "loadedmetadata",
+                "time": 3.0086859,
+                "source": "http://127.0.0.1:8084/test/pattern.mp4?quality=A",
+                "paused": true,
+                "readyState": 3
+              },
+              {
+                "name": "loadeddata",
+                "time": 3.0086859,
+                "source": "http://127.0.0.1:8084/test/pattern.mp4?quality=A",
+                "paused": true,
+                "readyState": 3
+              },
+              {
+                "name": "canplay",
+                "time": 3.0086859,
+                "source": "http://127.0.0.1:8084/test/pattern.mp4?quality=A",
+                "paused": true,
+                "readyState": 3
+              },
+              {
+                "name": "seeking",
+                "time": 3.0086859,
+                "source": "http://127.0.0.1:8084/test/pattern.mp4?quality=A",
+                "paused": true,
+                "readyState": 4
+              },
+              {
+                "name": "seeked",
+                "time": 3.0086859,
+                "source": "http://127.0.0.1:8084/test/pattern.mp4?quality=A",
+                "paused": true,
+                "readyState": 4
+              },
+              {
+                "name": "canplay",
+                "time": 3.0086859,
+                "source": "http://127.0.0.1:8084/test/pattern.mp4?quality=A",
+                "paused": true,
+                "readyState": 4
+              },
+              {
+                "name": "seeking",
+                "time": 3.0086859,
+                "source": "http://127.0.0.1:8084/test/pattern.mp4?quality=A",
+                "paused": true,
+                "readyState": 2
+              },
+              {
+                "name": "canplay",
+                "time": 3.0086859,
+                "source": "http://127.0.0.1:8084/test/pattern.mp4?quality=A",
+                "paused": true,
+                "readyState": 4
+              },
+              {
+                "name": "seeked",
+                "time": 3.0140197,
+                "source": "http://127.0.0.1:8084/test/pattern.mp4?quality=A",
+                "paused": true,
+                "readyState": 4
+              }
+            ],
+            "time": 3.0140197,
+            "paused": true,
+            "mediaError": null,
+            "source": "http://127.0.0.1:8084/test/pattern.mp4?quality=A",
+            "readyState": 4,
+            "mobileBranch": false,
+            "maxTouchPoints": 0,
+            "chapters": [
+              {
+                "start": "0",
+                "end": "2",
+                "duration": "2",
+                "title": "Opening"
+              },
+              {
+                "start": "2",
+                "end": "6",
+                "duration": "4",
+                "title": "Middle"
+              },
+              {
+                "start": "6",
+                "end": "8",
+                "duration": "2",
+                "title": "Ending"
+              }
+            ]
+          }
+        }
+      ]
+    },
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+            "dataset": "A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers. A long chapter title with complete metadata retained for consumers."
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: quality switch preserves chapter/thumbnail interactions",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "quality-position": {
+            "before": 3.0075061,
+            "restoredTime": 3.0087456,
+            "historicalReset": false
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: fullscreenWeb keeps hover geometry and exits cleanly",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.484375,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "candidate core + candidate chapter: fullscreen keeps hover geometry and exits cleanly",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": [],
+          "chapter-fullscreen-layout": {
+            "title": {
+              "left": 611.5,
+              "right": 668.484375,
+              "top": 597,
+              "bottom": 617
+            },
+            "thumbnail": {
+              "left": 590,
+              "right": 690,
+              "top": 531,
+              "bottom": 591
+            },
+            "progress": {
+              "left": 10,
+              "right": 1270,
+              "top": 647,
+              "bottom": 655
+            }
+          }
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "trusted taps seek through chapters before and after web fullscreen",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "published-only observations: blank title, NaN and once-only metadata are historical defects",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "candidate clears titles on blank chapters, zero hover and replacement",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "candidate rejects NaN and can recover after an invalid update",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "candidate releases only its listeners and DOM across multiple instances and early destruction",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "candidate ignores pending metadata initialization after immediate destroy",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "candidate deduplicates stylesheet injection while the document is loading",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "published-only observations: blank title, NaN and once-only metadata are historical defects",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "candidate clears titles on blank chapters, zero hover and replacement",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "candidate rejects NaN and can recover after an invalid update",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "candidate releases only its listeners and DOM across multiple instances and early destruction",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "candidate ignores pending metadata initialization after immediate destroy",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "candidate deduplicates stylesheet injection while the document is loading",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "published-only observations: blank title, NaN and once-only metadata are historical defects",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "candidate clears titles on blank chapters, zero hover and replacement",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "candidate rejects NaN and can recover after an invalid update",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "candidate releases only its listeners and DOM across multiple instances and early destruction",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "candidate ignores pending metadata initialization after immediate destroy",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "candidate deduplicates stylesheet injection while the document is loading",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "factory, registration, input normalization and safe title text",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "progress bars, real hover, title edges and boundary seek",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "sync update, Infinity, object identity, empty lists and invalid data",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "explicit source update and core-owned destruction",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "factory, registration, input normalization and safe title text",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "progress bars, real hover, title edges and boundary seek",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "sync update, Infinity, object identity, empty lists and invalid data",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "explicit source update and core-owned destruction",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "factory, registration, input normalization and safe title text",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "progress bars, real hover, title edges and boundary seek",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "sync update, Infinity, object identity, empty lists and invalid data",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "explicit source update and core-owned destruction",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "factory, registration, input normalization and safe title text",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "progress bars, real hover, title edges and boundary seek",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "sync update, Infinity, object identity, empty lists and invalid data",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "explicit source update and core-owned destruction",
+          "engine": "chromium",
+          "status": "passed",
+          "retry": 0,
+          "browser": "153.0.8010.12",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "factory, registration, input normalization and safe title text",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "progress bars, real hover, title edges and boundary seek",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "sync update, Infinity, object identity, empty lists and invalid data",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "explicit source update and core-owned destruction",
+          "engine": "firefox",
+          "status": "passed",
+          "retry": 0,
+          "browser": "155.0",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "factory, registration, input normalization and safe title text",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "progress bars, real hover, title edges and boundary seek",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "sync update, Infinity, object identity, empty lists and invalid data",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        },
+        {
+          "title": "explicit source update and core-owned destruction",
+          "engine": "webkit",
+          "status": "passed",
+          "retry": 0,
+          "browser": "26.6",
+          "platform": "win32",
+          "errors": []
+        }
+      ]
+    }
+  ],
+  "logs": [
+    {
+      "file": "refactor/.cache/chapter05-build.log",
+      "sha256": "b88f24d6f608e9ad9ff3c85fac8f47bc1073ecb4e1bf313b467f594e56b63e3a",
+      "bytes": 1453
+    },
+    {
+      "file": "refactor/.cache/chapter05-ci.log",
+      "sha256": "667c058fdb944f7e9e5db74e4bfc84eed465fdf76b4c2d60741f5fd32506752b",
+      "bytes": 63241
+    }
+  ],
+  "cacheNote": "Reports include inline screenshot bodies. Traces and failure screenshots are preserved in resultDir; raw report path attachments may still reference the shared output directory. Cache is local; rerun if missing.",
+  "remaining": [
+    "CHAPTER-TIMING-01 native/driver/core timing attribution",
+    "Physical device evidence for supported mobile/fullscreen behavior",
+    "PKG-CHAPTER-06 installed distribution and 8082 example"
+  ]
+}
diff --git a/refactor/changes/2026-09-12-PKG-CHAPTER-05-combinations.md b/refactor/changes/2026-09-12-PKG-CHAPTER-05-combinations.md
new file mode 100644
index 000000000..fa37e1426
--- /dev/null
+++ b/refactor/changes/2026-09-12-PKG-CHAPTER-05-combinations.md
@@ -0,0 +1,60 @@
+# PKG-CHAPTER-05：进度、清晰度、缩略图与全屏组合
+
+状态：进行中。起点 d18c5456，工作区已核实干净；Chapter-04 和 CORE-22 前置已完成。
+
+现有 chapter.spec.js 的全面章节用例固定旧核心。新增组合覆盖旧/新核心、旧/新 chapter，
+使用本地固定 MP4 和缩略图网格验证真实 hover、seek、清晰度切换、显式章节更新、原生/
+网页全屏进出与缩略图/标题位置。触摸部分在 390px、hasTouch 与 iPhone UA 模拟环境中
+要求可信 touchstart，并检查进入/退出网页全屏后的章节 seek；不声称已在 iPhone 真机运行。
+
+本阶段先保留实际测试结果；任何失败先核对原生能力、旧版行为、测试夹具与候选实现，
+不改断言使候选假通过。物理设备和未覆盖场景继续作为未验收范围。
+
+## 已确认的显示缺陷与源码修复
+
+390px 的长标题在新旧插件都超过进度条右边界；真实页面显示文字被播放器外边缘直接裁切。
+先加入候选不越界的失败断言以及旧版溢出观察，三引擎分别两种核心：6 个候选失败、
+6 个历史观察通过。style.less 现使用 max-width:100%、border-box、overflow:hidden 和
+text-overflow:ellipsis，把显示宽度交给样式层；progress.ts/chapters.ts、同步 update、
+数组原地变更、事件以及声明不变。完整 textContent 与 data-title 仍按原样保留。
+正式 main/legacy/module 与 docs/compiled 已由 yarn build artplayer-plugin-chapter 生成。
+
+## 夹具修正与尚未关闭的时序疑点
+
+第一轮 48 项：36 个全屏/触摸组合通过，12 个 quality 场景失败。10 个卡在 hover 结束
+章节：鼠标点在展开的 quality 菜单覆盖区域，尚未进入进度条；两个旧核心 WebKit 的
+位置回到 0，已有 progress-quality.spec.js 复现该历史缺陷。该旧版观察保持显式分支，
+候选核心仍必须恢复切换前位置，没有用旧缺陷放宽候选断言。
+
+第二轮先移动鼠标，仍 12 项失败：候选菜单有焦点保持；旧 core CSS 原本只有 opacity=0
+和 pointer-events:none，并无 visibility:hidden，toBeHidden 不能表示它的视觉关闭。
+第三轮外部 Pause 按钮点击后，候选菜单退出，旧核心的 toBeHidden 仍失败。对照实际
+发布包样式后改为检查 opacity=0，选择前等待 opacity=1，随后仍要求真实标题与缩略图
+可见、位置不重叠。所有首轮报告均保留；这是菜单交互前提修正，不是删除章节断言。
+
+第三轮 24 项中长标题全部通过；另有候选核心 WebKit 的 quality restart 等待超时。
+修正菜单后的一轮 12 quality 为 11 通过/1 失败，最后候选核心+候选章节仍在 7 秒
+轮询内未看到 restart，而 afterEach 已记录 restart、新源、恢复位置、readyState=4，
+没有媒体错误。来源可能涉及原生 seek/事件耗时，尚未证明；不据此修改核心或提高超时，
+也不因后续某次通过关闭这个疑点。原始事件序列和失败 trace 继续保留。
+
+本次未安装依赖、未更改发布版本。触摸模拟不代替物理 Safari/iOS/Android，完整分发与
+8082 demo 属于 Chapter-06。任务仍 doing，源码修复与证据以独立 checkpoint 提交。
+回退本检查点会移除长标题显示限制，恢复旧显示；已发布的 npm 包没有发生变化。
+
+## 本检查点验证结果
+
+- 正式 main 和 legacy 分别 102 项通过，无重试/跳过；使用明确产物映射，核心与章节包
+  的浏览器服务指纹均与实际 dist 字节一致，不是冒用源码运行结果。
+- 每组包含原有 42 项章节用例与新增 60 项组合。新增部分为 12 个长标题（含 6 个历史
+  溢出观察）、12 个 quality/缩略图（含两项旧核心 WebKit 位置归零观察）、24 个真实元素/
+  网页全屏、12 个触摸模拟。不能把所有通过项都称为没有历史缺陷的候选验收。
+- 完整 CI 599 项（550 单元、14 工程、35 基线）通过；严格源码/类型消费、声明一致性、
+  lint 通过，保留一条已知生成声明 warning。最终新增测试定向 lint 通过。
+- 长标题修复后截图已实际查看：文字省略且标题框在播放器内，完整内容保持在 DOM 数据。
+- 全部阶段包括 48 项首轮、12 项菜单修正失败、12 项长标题先红后绿、24 项第三轮
+  17 通过/7 失败及最后 quality 11/1 均保留，见 [冻结证据](../baselines/chapter-combinations-checkpoint.json)。
+
+CHAPTER-LAYOUT-01 已按具体显示范围关闭；CHAPTER-TIMING-01 仍 open。最终产物两轮
+通过不解释早期时序超时，不能以它们消除待查证据。当前 217 项，70 done、3 doing、144 todo。
+下一步可推进独立包；Chapter-05 的物理设备和时序缺口继续随风险台账接续，不阻塞全局目标。
diff --git a/refactor/plan.md b/refactor/plan.md
index c823704ab..42c7ad3b6 100644
--- a/refactor/plan.md
+++ b/refactor/plan.md
@@ -4,7 +4,7 @@
 
 基线：`40fcda6a37d0049d42e49c1e64e70d4fd9ba5f7f`。总任务 217 项，范围 22 个包及工作区/示例。
 
-状态：todo 145 / doing 2 / blocked 0 / done 70 / deferred 0。风险 L/M/H 表示兼容风险，不表示工期。
+状态：todo 144 / doing 3 / blocked 0 / done 70 / deferred 0。风险 L/M/H 表示兼容风险，不表示工期。
 
 前置依赖是启动条件；验收是完成条件。任务可以继续拆分，但不能复用或悄悄删除旧 ID。
 
@@ -138,7 +138,7 @@
 | PKG-CHAPTER-02 | artplayer-plugin-chapter<br>建立特有行为与错误测试 | PKG-CHAPTER-01, ENG-03, ENG-05 | 区间重叠/空列表/边界 seek、hover 标题和 update 用例 | 旧版本行为可重跑，成功/失败/切源/销毁有必要断言；修正 BASE-TYPE-02 的可选参数声明并补正反例 | M | done |
 | PKG-CHAPTER-03 | artplayer-plugin-chapter<br>以 TypeScript 拆分内部职责与资源 | PKG-CHAPTER-02, ENG-07 | 以严格 TS 拆分区间计算、进度 DOM、事件生命周期与样式注入；公开声明消费在 04 闭环 | 不依赖新核心方法或大范围设置重构；旧 API/事件和资源通过，必要适配限包内 | M | done |
 | PKG-CHAPTER-04 | artplayer-plugin-chapter<br>迁移自有源码和公开类型 | PKG-CHAPTER-03, ENG-04, ENG-06 | 承接 03 的自有源码 TS 化，完善公开 Chapters/Option/Result 与 update 推导，关闭声明模块解析和旧消费差异 | 严格类型检查、旧消费样例通过；声明路径/导出和同步异步兼容；处理 BASE-TYPE-01/03，保持运行时和新旧 TS 模块解析消费 | M | done |
-| PKG-CHAPTER-05 | artplayer-plugin-chapter<br>验证新旧核心和组合 | PKG-CHAPTER-04, CORE-22 | chapter + quality/thumbnail、移动和全屏进度场景 | 最终核心与原支持范围核心分别通过；设备/SDK 缺证据不能标完成 | M | todo |
+| PKG-CHAPTER-05 | artplayer-plugin-chapter<br>验证新旧核心和组合 | PKG-CHAPTER-04, CORE-22 | chapter + quality/thumbnail、移动和全屏进度场景 | 最终核心与原支持范围核心分别通过；设备/SDK 缺证据不能标完成 | M | doing |
 | PKG-CHAPTER-06 | artplayer-plugin-chapter<br>验证分发并同步文档 | PKG-CHAPTER-05, ENG-07 | chapter.js 示例、产物和变更记录 | tarball 入口/资源、类型、8082 demo 和 README 一致，有回退记录 | M | todo |
 
 ## 5 包迁移：artplayer-plugin-ambilight
@@ -468,6 +468,7 @@
 - PKG-CHAPTER-02: [记录](changes/2026-09-10-PKG-CHAPTER-02-tests.md) [记录](baselines/chapter-validation.json)
 - PKG-CHAPTER-03: [记录](changes/2026-09-10-PKG-CHAPTER-03-typescript-modules.md) [记录](baselines/chapter-migration-validation.json)
 - PKG-CHAPTER-04: [记录](changes/2026-09-10-PKG-CHAPTER-04-public-types.md) [记录](baselines/chapter-types-validation.json)
+- PKG-CHAPTER-05: [记录](changes/2026-09-12-PKG-CHAPTER-05-combinations.md) [记录](baselines/chapter-combinations-checkpoint.json)
 - PKG-AUDIO-01: [记录](changes/2026-09-12-PKG-AUDIO-01-contract.md) [记录](baselines/audio-track-contract.md) [记录](baselines/audio-track-release.json)
 - PKG-AUDIO-02: [记录](changes/2026-09-12-PKG-AUDIO-02-tests.md) [记录](audio-validation.md) [记录](baselines/audio-validation.json)
 - PKG-AUDIO-03: [记录](changes/2026-09-12-PKG-AUDIO-03-lifecycle.md) [记录](baselines/audio-lifecycle-validation.json)
diff --git a/refactor/progress.md b/refactor/progress.md
index f85f785fc..fae58b2f9 100644
--- a/refactor/progress.md
+++ b/refactor/progress.md
@@ -1,5 +1,20 @@
 # 进度与证据
 
+## 当前实施：Chapter-05 组合验证与长标题修复检查点
+
+正式 main/legacy 的章节基础及新旧核心/插件组合各 102 项通过，完整 CI 599 项通过。
+新增覆盖清晰度/缩略图、窄屏长标题、真实元素与网页全屏，以及 390px 可信触摸模拟。
+长标题超出进度条的显示缺陷已通过 CSS 修复，完整文本与公开接口不变；截图已查看。
+
+保留菜单交互前提修正的失败记录、旧核心 WebKit 位置归零观察。一个早期 WebKit
+quality restart 等待超时的确切原因尚未证明，CHAPTER-TIMING-01 保持 open；后续
+两种产物通过不能关闭它。触摸模拟没有替代手机真机。Chapter-05 仍 doing，尚未执行 06。
+
+当前 217 项：70 done、3 doing、144 todo。Audio-05、HLS-SDK-01 的风险仍保留。
+本批为本地 checkpoint，未推送或发布。后续优先推进独立包的源码/契约迁移，并在有效
+环境中接续开放的媒体/设备验证。详见 [本次变更](changes/2026-09-12-PKG-CHAPTER-05-combinations.md)
+和 [冻结证据](baselines/chapter-combinations-checkpoint.json)。
+
 ## 当前实施：Audio-05 恢复修复与真实缓冲检查点
 
 已修复旧核心时间零 seek 后候选音频漏恢复，严格 TS 与公开接口不变；三格式 Node 97 项、
diff --git a/refactor/risk-table.md b/refactor/risk-table.md
index 4806ba7c0..547603721 100644
--- a/refactor/risk-table.md
+++ b/refactor/risk-table.md
@@ -133,3 +133,5 @@
 | CORE-SOURCE-01 | resolved / 已复现 | 候选核心连续切源丢失原播放意图 | CORE-24 |
 | AUDIO-RESUME-01 | resolved / 已复现 | WebKit 旧核心切源后候选音频保持暂停 | PKG-AUDIO-05 |
 | AUDIO-BUFFER-01 | open / 已复现 | Windows WebKit 原生媒体无法在受限响应下推进至真实缓冲 | PKG-AUDIO-05 |
+| CHAPTER-LAYOUT-01 | resolved / 已复现 | 长章节标题超出窄播放器进度条宽度 | PKG-CHAPTER-05 |
+| CHAPTER-TIMING-01 | open / 已复现 | Windows WebKit 清晰度切换曾在等待窗口内未见 restart，稍后状态恢复 | PKG-CHAPTER-05 |
diff --git a/refactor/risks.json b/refactor/risks.json
index bd1125d0b..58aa0c3f1 100644
--- a/refactor/risks.json
+++ b/refactor/risks.json
@@ -2791,6 +2791,43 @@
       ],
       "compatibleResolution": "保留真实 waiting 断言；使用独立原生对照和其他实际支持环境/输入继续验证，不将没有播放推进的诊断当成缓冲通过，也不凭此改变插件 API 或否定真实 Safari 支持。",
       "closureCriteria": "受影响的缓冲/恢复得到真实媒体证据；与原生能力和测试夹具差异分开，发布环境的剩余范围经显式处理。"
+    },
+    {
+      "id": "CHAPTER-LAYOUT-01",
+      "title": "长章节标题超出窄播放器进度条宽度",
+      "confirmation": "reproduced",
+      "status": "resolved",
+      "owners": [
+        "PKG-CHAPTER-05"
+      ],
+      "evidence": [
+        "refactor/baselines/chapter-combinations-checkpoint.json",
+        "test/browser/chapter-combinations.spec.js"
+      ],
+      "compatibleResolution": "样式限制最大宽度并省略溢出显示，保留完整 textContent/data-title、DOM hooks 和原有章节数据语义。",
+      "closureCriteria": "两种核心三引擎窄屏候选标题不越界，历史溢出观察和完整文本保留断言通过。",
+      "resolutionEvidence": [
+        "refactor/baselines/chapter-combinations-checkpoint.json",
+        "packages/artplayer-plugin-chapter/src/style.less",
+        "packages/artplayer-plugin-chapter/ARCHITECTURE.md"
+      ],
+      "resolutionRationale": "先复现 6 个候选失败并保留截图，CSS 修复后正式 main/legacy 分别 12 个长标题用例通过（各含 6 历史溢出观察）。实际浏览器输入与产物指纹已冻结，API/类型未改变。"
+    },
+    {
+      "id": "CHAPTER-TIMING-01",
+      "title": "Windows WebKit 清晰度切换曾在等待窗口内未见 restart，稍后状态恢复",
+      "confirmation": "reproduced",
+      "status": "open",
+      "owners": [
+        "PKG-CHAPTER-05"
+      ],
+      "evidence": [
+        "refactor/baselines/chapter-combinations-checkpoint.json",
+        "test/browser/chapter-combinations.spec.js",
+        "refactor/changes/2026-09-12-PKG-CHAPTER-05-combinations.md"
+      ],
+      "compatibleResolution": "记录原生事件和绝对/相对时序，进一步区分媒体驱动耗时、夹具和核心源操作；未证明原因前不改核心、不扩大超时或重复到绿灯。",
+      "closureCriteria": "确认先前超时的来源并有对应可靠回归；后续单次通过不足以关闭。"
     }
   ]
 }
diff --git a/refactor/tasks.json b/refactor/tasks.json
index 80dbea19e..dc40ef0bf 100644
--- a/refactor/tasks.json
+++ b/refactor/tasks.json
@@ -1351,11 +1351,14 @@
         "PKG-CHAPTER-04",
         "CORE-22"
       ],
-      "status": "todo",
+      "status": "doing",
       "risk": "M",
       "deliverable": "chapter + quality/thumbnail、移动和全屏进度场景",
       "acceptance": "最终核心与原支持范围核心分别通过；设备/SDK 缺证据不能标完成",
-      "evidence": []
+      "evidence": [
+        "changes/2026-09-12-PKG-CHAPTER-05-combinations.md",
+        "baselines/chapter-combinations-checkpoint.json"
+      ]
     },
     {
       "id": "PKG-CHAPTER-06",
diff --git a/test/browser/chapter-combinations.spec.js b/test/browser/chapter-combinations.spec.js
new file mode 100644
index 000000000..d8348e176
--- /dev/null
+++ b/test/browser/chapter-combinations.spec.js
@@ -0,0 +1,194 @@
+import { devices } from '@playwright/test'
+import { expect, test } from './fixtures.js'
+
+async function openChapter(page, core, chapter) {
+  await page.goto(`/test/player.html?core=${core}&chapter=${chapter}`)
+  await page.evaluate(() => {
+    document.querySelector('.player').style.cssText = 'width:min(640px,100%);height:300px'
+    window.chapterEvents = []
+    window.chapterMediaEvents = []
+    window.art = new window.Artplayer({
+      container: '.player',
+      url: '/test/pattern.mp4?quality=B',
+      muted: true,
+      fullscreen: true,
+      fullscreenWeb: true,
+      miniProgressBar: true,
+      quality: [
+        { html: 'Quality A', url: '/test/pattern.mp4?quality=A' },
+        { html: 'Quality B', url: '/test/pattern.mp4?quality=B', default: true },
+      ],
+      thumbnails: { url: '/test/thumbnail-grid.svg', number: 100, column: 10, width: 100, height: 60 },
+      plugins: [window.artplayerPluginChapter({ chapters: [
+        { start: 0, end: 2, title: 'Opening' },
+        { start: 2, end: 6, title: 'Middle' },
+        { start: 6, end: 8, title: 'Ending' },
+      ] })],
+    })
+    for (const name of ['restart', 'seek', 'fullscreen', 'fullscreenWeb'])
+      window.art.on(name, value => window.chapterEvents.push({ name, value }))
+    for (const name of ['loadedmetadata', 'loadeddata', 'canplay', 'seeking', 'seeked', 'playing', 'pause', 'error'])
+      window.art.video.addEventListener(name, () => window.chapterMediaEvents.push({ name, time: window.art.currentTime, source: window.art.video.currentSrc, paused: window.art.video.paused, readyState: window.art.video.readyState }))
+    document.querySelector('#play').onclick = () => window.art.play()
+    document.querySelector('#pause').onclick = () => window.art.pause()
+  })
+  await expect.poll(() => page.evaluate(() => window.art.isReady)).toBe(true)
+  await expect(page.locator('.art-chapter')).toHaveCount(3)
+}
+
+async function hoverChapter(page, percentage, text) {
+  const inner = page.locator('.art-control-progress-inner')
+  const box = await inner.boundingBox()
+  const x = Math.round(box.x + box.width * percentage)
+  await page.mouse.move(x, box.y + box.height / 2)
+  await expect(page.locator('.art-chapter-title')).toHaveText(text)
+  await expect(page.locator('.art-chapter-title')).toHaveCSS('opacity', '1')
+  await expect(page.locator('.art-control-thumbnails')).toBeVisible()
+  await expect.poll(() => page.evaluate(() => window.art.controls.thumbnails.style.backgroundImage)).not.toBe('')
+  const layout = await page.evaluate(() => {
+    const rect = (element) => {
+      const box = element.getBoundingClientRect()
+      return { left: box.left, right: box.right, top: box.top, bottom: box.bottom }
+    }
+    return {
+      title: rect(document.querySelector('.art-chapter-title')),
+      thumbnail: rect(window.art.controls.thumbnails),
+      progress: rect(document.querySelector('.art-control-progress-inner')),
+    }
+  })
+  expect(layout.title.left).toBeGreaterThanOrEqual(layout.progress.left - 1)
+  expect(layout.title.right).toBeLessThanOrEqual(layout.progress.right + 1)
+  expect(layout.thumbnail.bottom).toBeLessThanOrEqual(layout.title.top)
+  return { box, x, layout }
+}
+
+test.afterEach(async ({ page }, testInfo) => {
+  const state = await page.evaluate(() => ({
+    events: window.chapterEvents,
+    nativeEvents: window.chapterMediaEvents,
+    time: window.art?.currentTime,
+    paused: window.art?.video.paused,
+    mediaError: window.art?.video.error?.code || null,
+    source: window.art?.video.currentSrc,
+    readyState: window.art?.video.readyState,
+    mobileBranch: window.Artplayer?.utils.isMobile,
+    maxTouchPoints: navigator.maxTouchPoints,
+    chapters: [...document.querySelectorAll('.art-chapter')].map(node => ({ ...node.dataset })),
+  })).catch(error => ({ error: error.message }))
+  await testInfo.attach('chapter-combination-state', { contentType: 'application/json', body: JSON.stringify(state) })
+  if (!page.isClosed())
+    await page.evaluate(() => window.art?.destroy())
+})
+
+for (const core of ['published', 'candidate']) {
+  for (const chapter of ['published', 'candidate']) {
+    test(`${core} core + ${chapter} chapter: long titles retain text within a narrow player`, async ({ page }, testInfo) => {
+      await page.setViewportSize({ width: 390, height: 844 })
+      await openChapter(page, core, chapter)
+      const fullTitle = 'A long chapter title with complete metadata retained for consumers. '.repeat(4)
+      await page.evaluate(fullTitle => window.art.plugins.artplayerPluginChapter.update({ chapters: [{ start: 0, end: Infinity, title: fullTitle }] }), fullTitle)
+      const box = await page.locator('.art-control-progress-inner').boundingBox()
+      await page.mouse.move(box.x + box.width / 2, box.y + box.height / 2)
+      await expect(page.locator('.art-chapter-title')).toHaveText(fullTitle.trim())
+      await expect(page.locator('.art-chapter-title')).toHaveCSS('opacity', '1')
+      const layout = await page.locator('.art-chapter-title').evaluate((element) => {
+        const title = element.getBoundingClientRect()
+        const progress = element.parentElement.getBoundingClientRect()
+        return { left: title.left, right: title.right, width: title.width, progressLeft: progress.left, progressRight: progress.right, text: element.textContent, dataset: element.parentElement.querySelector('.art-chapter').dataset.title }
+      })
+      await testInfo.attach('long-chapter-layout', { contentType: 'application/json', body: JSON.stringify(layout) })
+      await testInfo.attach('long-chapter-title', { contentType: 'image/png', body: await page.screenshot() })
+      expect(layout.text).toBe(fullTitle.trim())
+      expect(layout.dataset).toBe(fullTitle.trim())
+      expect(layout.left).toBeGreaterThanOrEqual(layout.progressLeft - 1)
+      if (chapter === 'published')
+        expect(layout.right).toBeGreaterThan(layout.progressRight)
+      else
+        expect(layout.right).toBeLessThanOrEqual(layout.progressRight + 1)
+    })
+
+    test(`${core} core + ${chapter} chapter: quality switch preserves chapter/thumbnail interactions`, async ({ page, browserName }, testInfo) => {
+      await openChapter(page, core, chapter)
+      await page.locator('#play').click()
+      await expect.poll(() => page.evaluate(() => window.art.currentTime)).toBeGreaterThan(0.2)
+      await page.locator('#pause').click()
+      const { box, x } = await hoverChapter(page, 0.375, 'Middle')
+      await page.mouse.click(x, box.y + box.height / 2)
+      await expect.poll(() => page.evaluate(() => !window.art.video.seeking)).toBe(true)
+      const time = await page.evaluate(() => window.art.currentTime)
+      expect(time).toBeCloseTo(3, 1)
+      await expect.poll(() => page.locator('.art-chapter .art-progress-played').nth(1).evaluate(node => Number.parseFloat(node.style.width))).toBeCloseTo(25, 0)
+      expect(await page.locator('.art-chapter .art-progress-played').evaluateAll(nodes => [nodes[0].style.width, nodes[2].style.width])).toEqual(['100%', '0px'])
+      await page.locator('.art-control-quality').hover()
+      await expect(page.locator('.art-control-quality .art-selector-list')).toHaveCSS('opacity', '1')
+      await page.locator('.art-control-quality .art-selector-item').filter({ hasText: 'Quality A' }).click()
+      await expect.poll(() => page.evaluate(() => window.art.url.includes('quality=A'))).toBe(true)
+      await expect.poll(() => page.evaluate(() => window.chapterEvents.filter(event => event.name === 'restart').map(event => event.value))).toEqual(['/test/pattern.mp4?quality=A'])
+      await expect.poll(() => page.evaluate(() => !window.art.video.seeking && window.art.video.readyState >= 2)).toBe(true)
+      const restoredTime = await page.evaluate(() => window.art.currentTime)
+      const historicalReset = core === 'published' && browserName === 'webkit'
+      if (historicalReset)
+        expect(restoredTime).toBeLessThan(0.05)
+      else
+        expect(restoredTime).toBeCloseTo(time, 1)
+      await testInfo.attach('quality-position', { contentType: 'application/json', body: JSON.stringify({ before: time, restoredTime, historicalReset }) })
+      expect(await page.evaluate(() => window.art.video.paused)).toBe(true)
+      await expect(page.locator('.art-control-quality .art-selector-value')).toHaveText('Quality A')
+      await page.locator('#pause').click()
+      await expect(page.locator('.art-control-quality .art-selector-list')).toHaveCSS('opacity', '0')
+      await hoverChapter(page, 0.85, 'Ending')
+      await page.evaluate(() => window.art.plugins.artplayerPluginChapter.update({ chapters: [{ start: 0, end: Infinity, title: 'Updated after quality' }] }))
+      await hoverChapter(page, 0.5, 'Updated after quality')
+      await testInfo.attach('chapter-quality-thumbnail', { contentType: 'image/png', body: await page.locator('.art-video-player').screenshot() })
+      await page.locator('#play').click()
+      await expect.poll(() => page.evaluate(() => window.art.currentTime)).toBeGreaterThan(restoredTime + 0.2)
+      expect(await page.evaluate(() => window.art.video.error)).toBeNull()
+    })
+
+    for (const mode of ['fullscreenWeb', 'fullscreen']) {
+      test(`${core} core + ${chapter} chapter: ${mode} keeps hover geometry and exits cleanly`, async ({ page }, testInfo) => {
+        await openChapter(page, core, chapter)
+        if (mode === 'fullscreenWeb')
+          await page.evaluate(() => { window.Artplayer.FULLSCREEN_WEB_IN_BODY = true })
+        const control = page.locator(`.art-control-${mode}`)
+        const before = await page.locator('.art-control-progress-inner').boundingBox()
+        await control.click()
+        await expect.poll(() => page.evaluate(mode => window.art[mode], mode)).toBe(true)
+        const { box, layout } = await hoverChapter(page, 0.5, 'Middle')
+        expect(box.width).toBeGreaterThanOrEqual(before.width)
+        await testInfo.attach(`chapter-${mode}`, { contentType: 'image/png', body: await page.screenshot() })
+        await testInfo.attach('chapter-fullscreen-layout', { contentType: 'application/json', body: JSON.stringify(layout) })
+        await control.click()
+        await expect.poll(() => page.evaluate(mode => window.art[mode], mode)).toBe(false)
+        expect(await page.evaluate(() => window.art.template.$container.contains(window.art.template.$player))).toBe(true)
+        await hoverChapter(page, 0.99, 'Ending')
+        expect(await page.evaluate(mode => window.chapterEvents.filter(event => event.name === mode).map(event => event.value), mode)).toEqual([true, false])
+      })
+    }
+
+    test.describe(`${core} core + ${chapter} chapter touch emulation`, () => {
+      test.use({ viewport: { width: 390, height: 844 }, hasTouch: true, userAgent: devices['iPhone 13'].userAgent })
+      test('trusted taps seek through chapters before and after web fullscreen', async ({ page }, testInfo) => {
+        await openChapter(page, core, chapter)
+        expect(await page.evaluate(() => window.Artplayer.utils.isMobile)).toBe(true)
+        await page.evaluate(() => {
+          window.chapterTouches = []
+          window.art.template.$progress.addEventListener('touchstart', event => window.chapterTouches.push({ trusted: event.isTrusted, touches: event.touches.length }))
+        })
+        for (const fullscreen of [false, true, false]) {
+          if (await page.evaluate(() => window.art.fullscreenWeb) !== fullscreen)
+            await page.locator('.art-control-fullscreenWeb').tap()
+          await expect.poll(() => page.evaluate(() => window.art.fullscreenWeb)).toBe(fullscreen)
+          const progress = await page.locator('.art-control-progress-inner').boundingBox()
+          await page.touchscreen.tap(progress.x + progress.width * 0.375, progress.y + progress.height / 2)
+          await expect.poll(() => page.evaluate(() => window.art.currentTime)).toBeCloseTo(3, 1)
+          await expect.poll(() => page.evaluate(() => !window.art.video.seeking)).toBe(true)
+          await expect(page.locator('.art-chapter')).toHaveCount(3)
+        }
+        expect(await page.evaluate(() => window.chapterTouches)).toEqual(Array.from({ length: 3 }, () => ({ trusted: true, touches: 1 })))
+        expect(await page.evaluate(() => document.documentElement.scrollWidth <= innerWidth)).toBe(true)
+        await testInfo.attach('chapter-touch-emulation', { contentType: 'image/png', body: await page.screenshot() })
+      })
+    })
+  }
+}