fix: restore running session streaming state

Fix running session streaming bubble restore TO DO list.csv

@@ -0,0 +1,6 @@
+status,step
+DONE,定位会话切换与运行中恢复逻辑
+DONE,核对本次改动是否影响该链路
+DONE,查看相关运行日志和当前会话状态
+DONE,修复缺失 streaming 气泡的恢复逻辑
+IN_PROGRESS,验证并汇总影响范围

public/app.js

@@ -68,8 +68,10 @@
   const SIDEBAR_SWIPE_TRIGGER = 72;
   const SIDEBAR_SWIPE_MAX_VERTICAL_DRIFT = 42;
   const OLD_SESSION_GROUP_INITIAL_VISIBLE = 3;
+  const SESSION_GROUP_COMPACT_VISIBLE_LIMIT = 8;
   const OLD_SESSION_COLLAPSE_DAYS = 7;
   const OLD_SESSION_COLLAPSE_MS = OLD_SESSION_COLLAPSE_DAYS * 24 * 60 * 60 * 1000;
+  const SESSION_LOAD_OVERLAY_TIMEOUT_MS = 12_000;
 
   const MODEL_OPTIONS = [
     { value: 'opus', label: 'Opus', desc: '最强大，1M 上下文' },
@@ -176,6 +178,7 @@
   let codexConfigCache = null;
   let loadedHistorySessionId = null;
   let activeSessionLoad = null;
+  let sessionLoadOverlayTimer = null;
   let sidebarSwipe = null;
   let activeComposerToken = null;
   let composerSuggestionTimer = null;
@@ -3057,34 +3060,37 @@
     return session.id === currentSessionId || session.isRunning || session.hasUnread || session.waitingOnChildren;
   }
 
-  function splitCollapsedOldSessions(sessionItems, collapseKey) {
+  function splitCollapsedSessions(sessionItems, collapseKey) {
     const isExpanded = collapseKey && expandedOldSessionGroups.has(collapseKey);
     const nowMs = Date.now();
+    const shouldCompactByCount = sessionItems.length > SESSION_GROUP_COMPACT_VISIBLE_LIMIT;
     const visibleSessions = [];
-    const hiddenOldSessions = [];
+    const hiddenSessions = [];
 
     sessionItems.forEach((session) => {
-      const shouldHideOldSession = (
+      const isOldSession = isOlderThanOldSessionWindow(session, nowMs);
+      const shouldHideByAge = isOldSession && visibleSessions.length >= OLD_SESSION_GROUP_INITIAL_VISIBLE;
+      const shouldHideByCount = shouldCompactByCount && visibleSessions.length >= SESSION_GROUP_COMPACT_VISIBLE_LIMIT;
+      const shouldHideSession = (
         !isExpanded
         && !shouldAlwaysShowOldSession(session)
-        && isOlderThanOldSessionWindow(session, nowMs)
+        && (shouldHideByAge || shouldHideByCount)
-        && visibleSessions.length >= OLD_SESSION_GROUP_INITIAL_VISIBLE
       );
-      if (shouldHideOldSession) {
+      if (shouldHideSession) {
-        hiddenOldSessions.push(session);
+        hiddenSessions.push(session);
       } else {
         visibleSessions.push(session);
       }
     });
 
-    return { visibleSessions, hiddenOldSessions };
+    return { visibleSessions, hiddenSessions };
   }
 
   function createOldSessionLoadMoreButton(hiddenCount, collapseKey, projectName = '') {
     const button = document.createElement('button');
     button.type = 'button';
     button.className = 'session-list-load-more';
-    button.setAttribute('aria-label', `加载更多${projectName ? ` ${projectName}` : ''} ${hiddenCount} 条 7 天前会话`);
+    button.setAttribute('aria-label', `加载更多${projectName ? ` ${projectName}` : ''}会话，还有 ${hiddenCount} 条`);
     button.innerHTML = `
       <span class="session-list-load-more-title">加载更多</span>
       <span class="session-list-load-more-meta">还有 ${hiddenCount} 条</span>
@@ -3435,15 +3441,45 @@
     return `正在载入 ${title} 的完整消息记录…`;
   }
 
+  function clearSessionLoadOverlayTimer() {
+    if (!sessionLoadOverlayTimer) return;
+    clearTimeout(sessionLoadOverlayTimer);
+    sessionLoadOverlayTimer = null;
+  }
+
+  function releaseSessionLoadingOverlay({ keepActiveLoad = true, allowRetry = false } = {}) {
+    clearSessionLoadOverlayTimer();
+    document.body.classList.remove('session-loading-active');
+    sessionLoadingOverlay.hidden = true;
+    sessionLoadingOverlay.setAttribute('aria-hidden', 'true');
+    msgInput.disabled = false;
+    modeSelect.disabled = false;
+    sendBtn.disabled = false;
+    abortBtn.disabled = false;
+    if (keepActiveLoad && activeSessionLoad) {
+      if (allowRetry) activeSessionLoad.overlayReleased = true;
+    }
+  }
+
   function setSessionLoading(sessionId, options = {}) {
+    clearSessionLoadOverlayTimer();
     const loading = !!sessionId;
     const blocking = options.blocking !== false;
     const requestId = loading ? (options.requestId || createSessionSwitchRequestId(sessionId)) : '';
-    activeSessionLoad = loading ? { sessionId, blocking, snapshot: null, requestId } : null;
+    activeSessionLoad = loading ? { sessionId, blocking, snapshot: null, requestId, overlayReleased: false } : null;
     const showOverlay = !!(loading && blocking);
-    document.body.classList.toggle('session-loading-active', showOverlay);
+    if (showOverlay) {
-    sessionLoadingOverlay.hidden = !showOverlay;
+      document.body.classList.add('session-loading-active');
-    sessionLoadingOverlay.setAttribute('aria-hidden', showOverlay ? 'false' : 'true');
+      sessionLoadingOverlay.hidden = false;
+      sessionLoadingOverlay.setAttribute('aria-hidden', 'false');
+      sessionLoadOverlayTimer = setTimeout(() => {
+        sessionLoadOverlayTimer = null;
+        if (!activeSessionLoad || activeSessionLoad.sessionId !== sessionId || activeSessionLoad.requestId !== requestId) return;
+        releaseSessionLoadingOverlay({ keepActiveLoad: true, allowRetry: true });
+      }, SESSION_LOAD_OVERLAY_TIMEOUT_MS);
+    } else {
+      releaseSessionLoadingOverlay({ keepActiveLoad: loading });
+    }
     sessionLoadingLabel.textContent = loading ? (options.label || getSessionLoadLabel(sessionId)) : '正在整理消息与上下文…';
     msgInput.disabled = showOverlay;
     modeSelect.disabled = showOverlay;
@@ -3491,7 +3527,7 @@
     if (!sessionId) return;
     const blocking = options.blocking !== false;
     const force = options.force === true;
-    if (!force && activeSessionLoad?.sessionId === sessionId) return;
+    if (!force && activeSessionLoad?.sessionId === sessionId && !activeSessionLoad.overlayReleased) return;
     if (!force && sessionId === currentSessionId && !activeSessionLoad) return;
     renderEpoch++;
     loadedHistorySessionId = null;
@@ -4012,7 +4048,14 @@
       if (ws !== socket) return;
       let msg;
       try { msg = JSON.parse(e.data); } catch { return; }
-      handleServerMessage(msg);
+      try {
+        handleServerMessage(msg);
+      } catch (err) {
+        console.error('[cc-web] failed to handle server message', err, msg);
+        if (activeSessionLoad) {
+          releaseSessionLoadingOverlay({ keepActiveLoad: true, allowRetry: true });
+        }
+      }
     };
 
     socket.onclose = () => {
@@ -4126,10 +4169,23 @@
         const activeLoad = activeSessionLoad;
         const pendingNewSession = pendingNewSessionRequest;
         const messageRequestId = String(msg.requestId || '');
+        const looksLikeCreatedSession = Array.isArray(msg.messages)
+          && msg.messages.length === 0
+          && !msg.historyPending
+          && !msg.isRunning;
+        const matchesPendingNewSessionFallback = !!(pendingNewSession
+          && !messageRequestId
+          && looksLikeCreatedSession
+          && snapshot.sessionId
+          && snapshot.sessionId !== currentSessionId
+          && snapshot.agent === pendingNewSession.agent
+          && (!pendingNewSession.cwd || snapshot.cwd === pendingNewSession.cwd)
+          && (!pendingNewSession.mode || snapshot.mode === pendingNewSession.mode));
         const matchesActiveLoad = !!(activeLoad?.sessionId === msg.sessionId
           && (!activeLoad.requestId || activeLoad.requestId === messageRequestId));
         const matchesPendingNewSession = !!(pendingNewSession
-          && (!pendingNewSession.requestId || pendingNewSession.requestId === messageRequestId));
+          && ((!pendingNewSession.requestId || pendingNewSession.requestId === messageRequestId)
+            || matchesPendingNewSessionFallback));
         const canSwitchToSessionInfo = matchesActiveLoad
           || matchesPendingNewSession
           || msg.sessionId === currentSessionId
@@ -4144,7 +4200,10 @@
           renderSessionList();
           break;
         }
-        if (matchesPendingNewSession) pendingNewSessionRequest = null;
+        if (matchesPendingNewSession) {
+          pendingNewSessionRequest = null;
+          if (!matchesActiveLoad) clearSessionLoading();
+        }
         applySessionSnapshot(snapshot, {
           immediate: isBlockingSessionLoad(msg.sessionId),
           suppressUnreadToast: false,
@@ -4210,8 +4269,9 @@
           collectClosedCollabAgentIds([msg.message]).forEach((id) => closedCollabAgentIds.add(id));
           const welcome = messagesDiv.querySelector('.welcome-msg');
           if (welcome) welcome.remove();
+          const shouldFollow = !(currentSessionRunning || isGenerating) || isNearBottom();
           messagesDiv.appendChild(buildMsgElement(msg.message));
-          scrollToBottom();
+          followOutputIfNeeded(shouldFollow);
           setCurrentSessionRunningState(!!getSessionMeta(currentSessionId)?.isRunning);
         }
         renderSessionList();
@@ -4644,6 +4704,7 @@
     if (!streamEl) return;
     const bubble = streamEl.querySelector('.msg-bubble');
     if (!bubble) return;
+    const shouldFollow = isNearBottom();
 
     if (window.pendingContentBlocks && window.pendingContentBlocks.length > 0) {
       bubble.innerHTML = '';
@@ -4654,7 +4715,7 @@
       setRenderedMarkdown(textDiv, pendingText);
     }
     syncAssistantLastSectionButton(streamEl);
-    scrollToBottom();
+    followOutputIfNeeded(shouldFollow);
   }
 
   function renderMarkdown(text) {
@@ -6169,6 +6230,7 @@
     if (!streamEl) return;
     const bubble = streamEl.querySelector('.msg-bubble');
     if (!bubble) return;
+    const shouldFollow = isNearBottom();
     let toolsDiv = bubble.querySelector('.msg-tools');
     if (!toolsDiv) { toolsDiv = bubble; }
 
@@ -6178,7 +6240,7 @@
     if (toolKind(tool) === 'collab_agent_tool_call') {
       const el = upsertCollabAgentToolCall(toolsDiv, toolUseId, tool, done);
       if (el) rememberToolCallTarget(toolUseId, tool, el);
-      scrollToBottom();
+      followOutputIfNeeded(shouldFollow);
       return;
     }
 
@@ -6189,7 +6251,7 @@
         const details = createToolCallElement(toolUseId, tool, done);
         existingTodo.replaceWith(details);
         rememberToolCallTarget(toolUseId, tool, details);
-        scrollToBottom();
+        followOutputIfNeeded(shouldFollow);
         return;
       }
     }
@@ -6221,7 +6283,7 @@
     }
     toolsDiv.appendChild(details);
     rememberToolCallTarget(toolUseId, tool, details);
-    scrollToBottom();
+    followOutputIfNeeded(shouldFollow);
   }
 
   function _refreshGroupSummary(group) {
@@ -6474,6 +6536,14 @@
     return true;
   }
 
+  function followOutputIfNeeded(shouldFollow) {
+    if (shouldFollow) {
+      scrollToBottom();
+    } else {
+      updateScrollbar();
+    }
+  }
+
   // --- Custom Scrollbar ---
   const scrollbarEl = document.getElementById('custom-scrollbar');
   const thumbEl = document.getElementById('custom-scrollbar-thumb');
@@ -6592,9 +6662,9 @@
     projectGroups.forEach((group, groupIndex) => {
       const groupKey = getProjectCollapseKey(group);
       const oldSessionCollapseKey = getProjectOldSessionCollapseKey(group);
-      const { visibleSessions: visibleGroupSessions, hiddenOldSessions: hiddenGroupOldSessions } = isSearchingSessions
+      const { visibleSessions: visibleGroupSessions, hiddenSessions: hiddenGroupSessions } = isSearchingSessions
-        ? { visibleSessions: group.sessions, hiddenOldSessions: [] }
+        ? { visibleSessions: group.sessions, hiddenSessions: [] }
-        : splitCollapsedOldSessions(group.sessions, oldSessionCollapseKey);
+        : splitCollapsedSessions(group.sessions, oldSessionCollapseKey);
       const isCollapsed = !isSearchingSessions && collapsedProjectKeys.has(groupKey);
       const hasActiveSession = group.sessions.some((session) => session.id === currentSessionId);
       const hasUnreadSession = group.sessions.some((session) => session.hasUnread);
@@ -6626,8 +6696,8 @@
       for (const s of visibleGroupSessions) {
         groupBody.appendChild(createSessionListItem(s));
       }
-      if (hiddenGroupOldSessions.length > 0) {
+      if (hiddenGroupSessions.length > 0) {
-        groupBody.appendChild(createOldSessionLoadMoreButton(hiddenGroupOldSessions.length, oldSessionCollapseKey, group.name));
+        groupBody.appendChild(createOldSessionLoadMoreButton(hiddenGroupSessions.length, oldSessionCollapseKey, group.name));
       }
       groupEl.appendChild(groupBody);
 
@@ -6644,16 +6714,16 @@
     });
 
     const ungroupedCollapseKey = getUngroupedOldSessionCollapseKey();
-    const { visibleSessions: visibleUngroupedSessions, hiddenOldSessions: hiddenUngroupedOldSessions } = isSearchingSessions
+    const { visibleSessions: visibleUngroupedSessions, hiddenSessions: hiddenUngroupedSessions } = isSearchingSessions
-      ? { visibleSessions: ungroupedSessions, hiddenOldSessions: [] }
+      ? { visibleSessions: ungroupedSessions, hiddenSessions: [] }
-      : splitCollapsedOldSessions(ungroupedSessions, ungroupedCollapseKey);
+      : splitCollapsedSessions(ungroupedSessions, ungroupedCollapseKey);
 
     for (const s of visibleUngroupedSessions) {
       sessionList.appendChild(createSessionListItem(s));
     }
 
-    if (hiddenUngroupedOldSessions.length > 0) {
+    if (hiddenUngroupedSessions.length > 0) {
-      sessionList.appendChild(createOldSessionLoadMoreButton(hiddenUngroupedOldSessions.length, ungroupedCollapseKey));
+      sessionList.appendChild(createOldSessionLoadMoreButton(hiddenUngroupedSessions.length, ungroupedCollapseKey));
     }
   }