From 74593d9953c793a0a99ecf2e96037c99bc78ac7e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=B5=85=E5=BF=B5?= <email@sample.com>
Date: Wed, 23 Sep 2026 17:09:17 +0800
Subject: [PATCH] =?UTF-8?q?fix(embed):=20scroll=20freeze=20root=20cause=20?=
 =?UTF-8?q?=E2=80=94=20drag-set=20'manual'=20pause=20reason=20never=20clea?=
 =?UTF-8?q?red?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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setReason('manual', true) fired on >8px drag had no clear path anywhere (wheel/keyboard have 500ms timers; pointer path didn't) — one drag left the reason permanently, stopping auto-scroll until refresh. Now cleared on pointerup, watchdog, and window blur.

Co-Authored-By: Claude Code <noreply@anthropic.com>
---
 apps/viewer/src/pages/embed/EmbedStream.vue | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/apps/viewer/src/pages/embed/EmbedStream.vue b/apps/viewer/src/pages/embed/EmbedStream.vue
index 32f4988..acc9ef0 100644
--- a/apps/viewer/src/pages/embed/EmbedStream.vue
+++ b/apps/viewer/src/pages/embed/EmbedStream.vue
@@ -236,6 +236,7 @@ function onPointerDown(event: PointerEvent): void {
     pointerWatchdog = null;
     pointerDownY = null;
     setReason('pointer', false);
+    setReason('manual', false);
     scheduleResume();
   }, POINTER_WATCHDOG_MS);
 }
@@ -259,6 +260,10 @@ function onPointerUp(): void {
     clearTimeout(pointerWatchdog);
     pointerWatchdog = null;
   }
+  // 拖动置位的 'manual' 原因在此清除（滚动卡死根因修复 2026-09-23：拖动 >8px
+  // setReason('manual', true) 此前无任何清除路径——一次拖动后暂停原因永久残留，
+  // 滚动停死到刷新；滚轮/键盘路径各有 500ms 定时清除，拖动漏了）。
+  setReason('manual', false);
   setReason('pointer', false);
   scheduleResume();
 }
@@ -367,6 +372,7 @@ function onWindowPointerEnd(): void {
 function onWindowBlur(): void {
   pointerDownY = null;
   setReason('pointer', false);
+  setReason('manual', false);
 }
 
 onMounted(() => {