feat(settings): search settings from the header and the command palette (#1714)

* feat(settings): search settings from the header and the command palette

The header search on the Settings page was shown but disabled. It now
searches a shared index of all 56 settings rows by translated title,
description and English synonyms, replaces the section page with ranked
results, and opens a result by scrolling to, focusing and briefly
highlighting its row. Enter opens the best match, and the section
navigation shows per-section match counts.

The command palette gains a "Settings" group that lists the best six
matches for a non-empty query, so any setting is one Ctrl/Cmd+K away.
Rows hidden by the current form state fall back to the control that
reveals them; rows the runtime cannot render are never returned.

The index ships through a new @iptvnator/workspace/shell/util/settings-search
sub-entrypoint so it stays out of the eager bundle, and a registry spec
keeps it in step with the section templates.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(settings): let search reveals win over pending input and gate embedded MPV rows

- A reveal (result click, command palette, Enter) now cancels a search
  keystroke still waiting for its debounce, so its q navigation can no
  longer supersede the reveal and leave the results open.
- Embedded MPV extra options and auto-reconnect require a lazily probed
  embedded MPV capability; frame copy also needs frameCopyAvailable, so
  search never offers a row the settings page cannot render.
- Keyboard users keep a focus-visible ring on the revealed row after the
  highlight fades.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(workspace): wait for palette probes without Promise.allSettled

The web tsconfig lib predates Promise.allSettled; use Promise.all over
rejection-safe probes instead.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

---------

Co-authored-by: 4gray <fourgray@proton.me>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

apps/web/src/app/settings/settings-general-section.component.html

@@ -9,7 +9,7 @@
         </div>
     </header>
 
-    <div class="setting-item">
+    <div class="setting-item" data-setting-id="language">
         <div class="setting-item__meta">
             <h4>{{ 'SETTINGS.LANGUAGE' | translate }}</h4>
             <p>{{ 'SETTINGS.LANGUAGE_DESCRIPTION' | translate }}</p>
@@ -40,7 +40,10 @@
         </div>
     </div>
 
-    <div class="setting-item setting-item--full-control">
+    <div
+        class="setting-item setting-item--full-control"
+        data-setting-id="theme"
+    >
         <div class="setting-item__meta">
             <h4>{{ 'SETTINGS.THEME' | translate }}</h4>
             <p>{{ 'SETTINGS.THEME_DESCRIPTION' | translate }}</p>
@@ -74,7 +77,10 @@
         </div>
     </div>
 
-    <div class="setting-item setting-item--full-control">
+    <div
+        class="setting-item setting-item--full-control"
+        data-setting-id="cover-size"
+    >
         <div class="setting-item__meta">
             <h4>{{ 'SETTINGS.COVER_SIZE' | translate }}</h4>
             <p>{{ 'SETTINGS.COVER_SIZE_DESCRIPTION' | translate }}</p>
@@ -108,7 +114,7 @@
         </div>
     </div>
 
-    <div class="setting-item">
+    <div class="setting-item" data-setting-id="cover-titles">
         <div class="setting-item__meta">
             <h4 id="cover-titles-label">
                 {{ 'SETTINGS.COVER_TITLES' | translate }}
@@ -127,7 +133,7 @@
         </div>
     </div>
 
-    <div class="setting-item">
+    <div class="setting-item" data-setting-id="startup-behavior">
         <div class="setting-item__meta">
             <h4>{{ 'SETTINGS.STARTUP_BEHAVIOR' | translate }}</h4>
             <p>
@@ -160,7 +166,11 @@
     </div>
 
     @if (supportsStartupWindowMode()) {
-        <div class="setting-item" data-test-id="startup-window-mode-setting">
+        <div
+            class="setting-item"
+            data-setting-id="startup-window-mode"
+            data-test-id="startup-window-mode-setting"
+        >
             <div class="setting-item__meta">
                 <h4>{{ 'SETTINGS.STARTUP_WINDOW_MODE' | translate }}</h4>
                 <p>
@@ -195,7 +205,7 @@
         </div>
     }
 
-    <div class="setting-item">
+    <div class="setting-item" data-setting-id="show-captions">
         <div class="setting-item__meta">
             <h4>{{ 'SETTINGS.SHOW_CAPTIONS' | translate }}</h4>
             <p>
@@ -207,7 +217,7 @@
         </div>
     </div>
 
-    <div class="setting-item">
+    <div class="setting-item" data-setting-id="strip-country-prefix">
         <div class="setting-item__meta">
             <h4>{{ 'SETTINGS.STRIP_COUNTRY_PREFIX' | translate }}</h4>
             <p>
@@ -233,7 +243,7 @@
                 <h3>{{ 'SETTINGS.PORTAL_CONNECTIONS' | translate }}</h3>
             </div>
         </header>
-        <div class="setting-item">
+        <div class="setting-item" data-setting-id="portal-connectivity-guard">
             <div class="setting-item__meta">
                 <h4 id="portal-connectivity-label">
                     {{ 'SETTINGS.PORTAL_CONNECTIVITY_GUARD' | translate }}