fix(sidebar): refresh project-chip payload after filter switch (#4775)

static/sessions.js

@@ -1652,6 +1652,14 @@ function _sessionSourceTabCount(filter, renderedWebuiSessionCount, renderedCliSe
   return filter === 'cli' ? renderedCliSessionCount : renderedWebuiSessionCount;
 }
 
+function _setActiveProjectFilter(projectId) {
+  const next = projectId === NO_PROJECT_FILTER ? NO_PROJECT_FILTER : (projectId || null);
+  if (_activeProject === next) return;
+  _activeProject = next;
+  renderSessionListFromCache();
+  void renderSessionList({deferWhileInteracting:false});
+}
+
 function _setSessionSourceFilter(filter) {
   const next = filter === 'cli' ? 'cli' : 'webui';
   if (_sessionSourceFilter === next) return;
@@ -5740,7 +5748,7 @@ function renderSessionListFromCache(){
     const allChip=document.createElement('span');
     allChip.className='project-chip'+(!_activeProject?' active':'');
     allChip.textContent='All';
-    allChip.onclick=()=>{_activeProject=null;renderSessionListFromCache();};
+    allChip.onclick=()=>{_setActiveProjectFilter(null);};
     bar.appendChild(allChip);
     // "Unassigned" chip — only when there are sessions with no project to
     // filter to. Hidden in the common case where every session is already
@@ -5750,7 +5758,7 @@ function renderSessionListFromCache(){
       noneChip.className='project-chip no-project'+(_activeProject===NO_PROJECT_FILTER?' active':'');
       noneChip.textContent='Unassigned';
       noneChip.title='Show conversations not yet assigned to a project';
-      noneChip.onclick=()=>{_activeProject=NO_PROJECT_FILTER;renderSessionListFromCache();};
+      noneChip.onclick=()=>{_setActiveProjectFilter(NO_PROJECT_FILTER);};
       bar.appendChild(noneChip);
     }
     // Project chips
@@ -5769,7 +5777,7 @@ function renderSessionListFromCache(){
       let _pClickTimer=null;
       chip.onclick=(e)=>{
         clearTimeout(_pClickTimer);
-        _pClickTimer=setTimeout(()=>{_pClickTimer=null;_activeProject=p.project_id;renderSessionListFromCache();},220);
+        _pClickTimer=setTimeout(()=>{_pClickTimer=null;_setActiveProjectFilter(p.project_id);},220);
       };
       chip.ondblclick=(e)=>{e.stopPropagation();clearTimeout(_pClickTimer);_pClickTimer=null;_startProjectRename(p,chip);};
       chip.oncontextmenu=(e)=>{e.preventDefault();_showProjectContextMenu(e,p,chip);};

tests/test_issue4775_sidebar_hidden_zero_message_pushdown.py

@@ -238,6 +238,7 @@ def test_omit_exclude_hidden_still_returns_default_hidden_rows(monkeypatch):
 def test_default_and_unassigned_queries_send_exclude_hidden(monkeypatch):
     src = SESSIONS_JS.read_text(encoding="utf-8")
     requested_source_fn = _extract_function(src, "_requestedSessionSidebarSource")
+    project_filter_fn = _extract_function(src, "_setActiveProjectFilter")
     query_fn = _extract_function(src, "_sessionListQueryString")
     script = f"""
 global.window = {{ _showCliSessions: false }};
@@ -246,12 +247,15 @@ global._showAllProfiles = false;
 global._showArchived = false;
 global._activeProject = null;
 global.NO_PROJECT_FILTER = '__none__';
+global.renderSessionListFromCache = () => {{}};
+global.renderSessionList = () => Promise.resolve();
 {requested_source_fn}
+{project_filter_fn}
 {query_fn}
 const default_query = _sessionListQueryString();
-global._activeProject = '__none__';
+_setActiveProjectFilter('__none__');
 const unassigned_query = _sessionListQueryString();
-global._activeProject = 'demo-project';
+_setActiveProjectFilter('demo-project');
 const named_project_query = _sessionListQueryString();
 console.log(JSON.stringify({{ default_query, unassigned_query, named_project_query }}));
 """
@@ -262,6 +266,40 @@ console.log(JSON.stringify({{ default_query, unassigned_query, named_project_que
     assert body["named_project_query"] == "?sidebar_source=webui"
 
 
+@pytest.mark.skipif(NODE is None, reason="node not on PATH")
+def test_project_filter_click_path_triggers_fresh_session_load():
+    src = SESSIONS_JS.read_text(encoding="utf-8")
+    project_filter_fn = _extract_function(src, "_setActiveProjectFilter")
+    script = f"""
+const calls = [];
+global.NO_PROJECT_FILTER = '__none__';
+global._activeProject = null;
+global.renderSessionListFromCache = () => {{
+  calls.push('cache');
+}};
+global.renderSessionList = (opts) => {{
+  calls.push(opts);
+  return Promise.resolve();
+}};
+{project_filter_fn}
+_setActiveProjectFilter('demo-project');
+_setActiveProjectFilter('__none__');
+console.log(JSON.stringify({{
+  activeProject: global._activeProject,
+  calls,
+}}));
+"""
+    body = _run_node(script)
+
+    assert body["activeProject"] == "__none__"
+    assert body["calls"] == [
+        "cache",
+        {"deferWhileInteracting": False},
+        "cache",
+        {"deferWhileInteracting": False},
+    ]
+
+
 def test_cache_key_varies_for_exclude_hidden_and_visible_only():
     key_without_filters = routes._session_list_cache_key(
         active_profile="default",