fix(dpip): [PKG-DPIP-04] preserve factory type and export compatibility

refactor/tasks.json

@@ -1569,7 +1569,8 @@
         "PKG-AMBILIGHT-04",
         "CORE-22",
         "PKG-AMBILIGHT-PROXY-01",
-        "PKG-CANVAS-04"
+        "PKG-CANVAS-04",
+        "PKG-FACTORY-01"
       ],
       "status": "todo",
       "risk": "M",
@@ -3054,11 +3055,15 @@
         "ENG-06",
         "CORE-07"
       ],
-      "status": "todo",
+      "status": "done",
       "risk": "H",
       "deliverable": "Document PiP 可选能力和真实状态/返回类型",
       "acceptance": "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",
-      "evidence": []
+      "evidence": [
+        "changes/2026-09-12-PKG-DPIP-04-types.md",
+        "baselines/dpip-types-validation.json",
+        "dpip-validation.md"
+      ]
     },
     {
       "id": "PKG-DPIP-05",
@@ -3350,7 +3355,8 @@
       "dependsOn": [
         "PKG-CANVAS-04",
         "CORE-22",
-        "PKG-DPIP-04"
+        "PKG-DPIP-04",
+        "PKG-FACTORY-01"
       ],
       "status": "todo",
       "risk": "H",
@@ -4083,7 +4089,8 @@
         "PKG-IFRAME-04",
         "PKG-TOOL-THUMB-04",
         "PKG-DANMUKU-06",
-        "PKG-MB-08"
+        "PKG-MB-08",
+        "PKG-FACTORY-01"
       ],
       "status": "todo",
       "risk": "H",
@@ -4269,6 +4276,27 @@
       "deliverable": "最终任务/设计/证据归档和维护指南",
       "acceptance": "全范围任务有结论、无未解释兼容缺口；遗留项有明确后续责任",
       "evidence": []
+    },
+    {
+      "id": "PKG-FACTORY-01",
+      "phase": "5 工厂类型兼容补审",
+      "title": "修复已迁移工厂的反向赋值兼容",
+      "scope": [
+        "artplayer-proxy-canvas",
+        "artplayer-plugin-ambilight"
+      ],
+      "dependsOn": [
+        "PKG-CANVAS-04",
+        "PKG-AMBILIGHT-04",
+        "PKG-DPIP-04"
+      ],
+      "status": "todo",
+      "risk": "H",
+      "deliverable": "复现两包旧typeof工厂替换与新.default/可选重载冲突，修复公开类型并补安装消费者、产物和文档",
+      "acceptance": "默认工厂的历史合法反向赋值继续通过；既有类型/运行时导出逐版本核对，不能只验证Parameters或直接调用",
+      "evidence": [
+        "baselines/factory-assignment-gaps.json"
+      ]
     }
   ]
 }