fix Claude secondary pane copy + false "session exited"

Two things surfaced in the secondary pane: the tab said "session 1"
while the banner said "secondary 1" — now both say "session N". And the
banner showed "session exited" right after starting, even though Claude
was alive: a transient tmux client process can exit during spawn while
the session itself is fine. pane.exit now verifies via `tmux has-session`
and only reports exited when the session is actually gone.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.pql/changelog/ticket_history/2026-05.sql

@@ -2196,3 +2196,4 @@ INSERT INTO ticket_history (ticket_id, field, old_value, new_value, changed_by,
 INSERT INTO ticket_history (ticket_id, field, old_value, new_value, changed_by, changed_at, created_at, updated_at, deleted_at, hash, canonical_version) VALUES ('T-147', 'status', 'backlog', 'in_progress', NULL, '2026-05-23 07:03:18', '2026-05-23 07:03:18', '2026-05-23 07:03:18', NULL, 'b0bc1949f98ef05a05717cef80ba194f', 1) ON CONFLICT(hash) DO NOTHING;
 INSERT INTO ticket_history (ticket_id, field, old_value, new_value, changed_by, changed_at, created_at, updated_at, deleted_at, hash, canonical_version) VALUES ('T-147', 'status', 'in_progress', 'done', NULL, '2026-05-23 07:06:54', '2026-05-23 07:06:54', '2026-05-23 07:06:54', NULL, 'b6b88954fdc04ecf7847dea204a92e14', 1) ON CONFLICT(hash) DO NOTHING;
 INSERT INTO ticket_history (ticket_id, field, old_value, new_value, changed_by, changed_at, created_at, updated_at, deleted_at, hash, canonical_version) VALUES ('T-149', 'status', 'backlog', 'in_progress', NULL, '2026-05-23 07:14:36', '2026-05-23 07:14:36', '2026-05-23 07:14:36', NULL, '75bb1fa2d964f284910201b1c15995b9', 1) ON CONFLICT(hash) DO NOTHING;
+INSERT INTO ticket_history (ticket_id, field, old_value, new_value, changed_by, changed_at, created_at, updated_at, deleted_at, hash, canonical_version) VALUES ('T-149', 'status', 'in_progress', 'done', NULL, '2026-05-23 07:27:32', '2026-05-23 07:27:32', '2026-05-23 07:27:32', NULL, 'd020ddfea99355676800af1e39249c85', 1) ON CONFLICT(hash) DO NOTHING;

.pql/changelog/tickets/2026-05.sql

@@ -2554,3 +2554,4 @@ INSERT INTO tickets (id, type, parent_id, title, description, status, priority,
 INSERT INTO tickets (id, type, parent_id, title, description, status, priority, assigned_to, team, decision_ref, created_at, updated_at, deleted_at, hash, canonical_version) VALUES ('T-148', 'task', 'T-132', 'Claude transcript disk-usage indicator + cleanup button', 'Surface transcript/session disk usage in the Claude panel with a cleanup affordance so the user can pick and choose what to remove. Per-session sizes (the <munged-cwd>/*.jsonl files + subagents/), a total, and a button to delete selected sessions'' transcripts. User-driven only — clide never auto-deletes transcript content. Future/''at some point'' per user. Relates to T-146 (session ids) and D-75.', 'backlog', 'low', NULL, NULL, NULL, '2026-05-23 07:03:18', '2026-05-23 07:03:18', NULL, '7bbe7f4baf80027516cc46cff93a8dfe', 1) ON CONFLICT(id) DO UPDATE SET type=excluded.type, parent_id=excluded.parent_id, title=excluded.title, description=excluded.description, status=excluded.status, priority=excluded.priority, assigned_to=excluded.assigned_to, team=excluded.team, decision_ref=excluded.decision_ref, updated_at=excluded.updated_at, deleted_at=excluded.deleted_at, hash=excluded.hash, canonical_version=excluded.canonical_version WHERE excluded.updated_at > tickets.updated_at OR (excluded.updated_at = tickets.updated_at AND excluded.hash > tickets.hash);
 INSERT INTO tickets (id, type, parent_id, title, description, status, priority, assigned_to, team, decision_ref, created_at, updated_at, deleted_at, hash, canonical_version) VALUES ('T-147', 'bug', 'T-132', 'Claude pane gets stuck waiting on a stale/legacy session', 'When the bound transcript (<munged-cwd>/<session-id>.jsonl) never appears — e.g. attaching via new-session -A to a session created before --session-id binding (T-146), or any unconnectable session — the pane shows ''Waiting for Claude…'' forever. Fix: before spawning, if the bound transcript for our deterministic session id does not exist, kill the clide tmux session of that exact name so new-session creates a clean session with our --session-id. SAFETY (hard requirement): only ever kill clide-initiated sessions — by exact clide-claude-<slug> name, on the private -L clide socket (a user''s terminal claude is never on that socket); never delete any transcript file. Also makes clean-install/first-run robust. Live-verify the stuck primary self-heals on relaunch and a secondary still gets a fresh independent session.', 'done', 'high', NULL, NULL, NULL, '2026-05-23 07:03:18', '2026-05-23 07:06:54', NULL, '4c08227959a8fe6905521ebdc42487c1', 1) ON CONFLICT(id) DO UPDATE SET type=excluded.type, parent_id=excluded.parent_id, title=excluded.title, description=excluded.description, status=excluded.status, priority=excluded.priority, assigned_to=excluded.assigned_to, team=excluded.team, decision_ref=excluded.decision_ref, updated_at=excluded.updated_at, deleted_at=excluded.deleted_at, hash=excluded.hash, canonical_version=excluded.canonical_version WHERE excluded.updated_at > tickets.updated_at OR (excluded.updated_at = tickets.updated_at AND excluded.hash > tickets.hash);
 INSERT INTO tickets (id, type, parent_id, title, description, status, priority, assigned_to, team, decision_ref, created_at, updated_at, deleted_at, hash, canonical_version) VALUES ('T-149', 'task', 'T-132', 'Native Claude pane startup banner (empty state)', 'Replace the bland ''Waiting for Claude…'' empty state with a native clide banner: clide logo, a Claude label (brand orange), the session role (primary/secondary N), the workspace path (home-collapsed), and the tmux session/status line, plus a ''warming up'' hint. Owned/native — no tmux capture-pane, no CC-internals coupling. ConversationView gains an optional emptyState widget; ClaudePane supplies a ClaudeBanner built from data it already has (repoRoot, statusLine, isPrimary).', 'in_progress', 'low', NULL, NULL, NULL, '2026-05-23 07:14:36', '2026-05-23 07:14:36', NULL, '741b021184df1596b364aa2d09167e85', 1) ON CONFLICT(id) DO UPDATE SET type=excluded.type, parent_id=excluded.parent_id, title=excluded.title, description=excluded.description, status=excluded.status, priority=excluded.priority, assigned_to=excluded.assigned_to, team=excluded.team, decision_ref=excluded.decision_ref, updated_at=excluded.updated_at, deleted_at=excluded.deleted_at, hash=excluded.hash, canonical_version=excluded.canonical_version WHERE excluded.updated_at > tickets.updated_at OR (excluded.updated_at = tickets.updated_at AND excluded.hash > tickets.hash);
+INSERT INTO tickets (id, type, parent_id, title, description, status, priority, assigned_to, team, decision_ref, created_at, updated_at, deleted_at, hash, canonical_version) VALUES ('T-149', 'task', 'T-132', 'Native Claude pane startup banner (empty state)', 'Replace the bland ''Waiting for Claude…'' empty state with a native clide banner: clide logo, a Claude label (brand orange), the session role (primary/secondary N), the workspace path (home-collapsed), and the tmux session/status line, plus a ''warming up'' hint. Owned/native — no tmux capture-pane, no CC-internals coupling. ConversationView gains an optional emptyState widget; ClaudePane supplies a ClaudeBanner built from data it already has (repoRoot, statusLine, isPrimary).', 'done', 'low', NULL, NULL, NULL, '2026-05-23 07:14:36', '2026-05-23 07:27:32', NULL, '1d922f79ed8f98bea75042af8662dd74', 1) ON CONFLICT(id) DO UPDATE SET type=excluded.type, parent_id=excluded.parent_id, title=excluded.title, description=excluded.description, status=excluded.status, priority=excluded.priority, assigned_to=excluded.assigned_to, team=excluded.team, decision_ref=excluded.decision_ref, updated_at=excluded.updated_at, deleted_at=excluded.deleted_at, hash=excluded.hash, canonical_version=excluded.canonical_version WHERE excluded.updated_at > tickets.updated_at OR (excluded.updated_at = tickets.updated_at AND excluded.hash > tickets.hash);

CHANGELOG.md

@@ -123,6 +123,10 @@ heading, and (b) bumping `pubspec.yaml` `version:` in the same commit.
 
 ### Fixed
 
+- Claude secondary panes no longer flash a false "session exited" while
+  the session is alive (a transient tmux client exit is now verified
+  against the live session), and the tab and banner agree on the label
+  ("session N") (T-149).
 - Claude pane no longer gets stuck on "Waiting for Claude…" when its
   session can't be bound (T-147) — e.g. a session left over from before
   session-id binding, or a fresh machine. It now retires that stale

lib/builtin/claude/src/claude_pane.dart

@@ -275,10 +275,18 @@ class _ClaudePaneState extends State<ClaudePane> {
     final kernel = _kernel();
     if (kernel == null) return;
     // Lifecycle only — content comes from the transcript, not pane.output.
-    _eventSub = kernel.events.on<DaemonEvent>().listen((e) {
+    _eventSub = kernel.events.on<DaemonEvent>().listen((e) async {
       if (e.subsystem != 'pane' || e.data['id'] != _paneId) return;
       switch (e.kind) {
         case 'pane.exit':
+          // A transient tmux client can exit (e.g. during spawn/respawn)
+          // while the session — and Claude — stay alive. Don't report
+          // "exited" then; only when the tmux session is actually gone.
+          // (The no-tmux fallback has no session, so the exit is real.)
+          if (_usingTmux && _sessionName != null && await tmux.hasSession(_sessionName!)) {
+            return;
+          }
+          if (!mounted) return;
           setState(() => _statusLine = widget.isPrimary ? 'session exited — restart clide to retry' : 'session exited');
         case 'pane.closed':
           _paneId = null;
@@ -317,7 +325,7 @@ class _ClaudePaneState extends State<ClaudePane> {
             child: ConversationView(
               controller: _conversation!,
               emptyState: ClaudeBanner(
-                role: widget.isPrimary ? 'primary' : 'secondary ${widget.secondaryIndex}',
+                role: widget.isPrimary ? 'primary' : 'session ${widget.secondaryIndex}',
                 workspace: _repoRoot,
                 statusLine: _statusLine,
               ),

lib/builtin/claude/src/tmux_session.dart

@@ -24,6 +24,14 @@ Future<void> killSession(String name) async {
   await tmuxRunner([..._socket, 'kill-session', '-t', name]);
 }
 
+/// Whether [name] is a live session on the clide socket. Used to suppress
+/// a spurious "session exited" when a transient tmux client process exits
+/// but the session itself is fine (T-149 follow-up).
+Future<bool> hasSession(String name) async {
+  final r = await tmuxRunner([..._socket, 'has-session', '-t', name]);
+  return r.exitCode == 0;
+}
+
 /// Return the names of all sessions currently alive on the clide
 /// socket. Empty list if the server is not running.
 Future<List<String>> listClideSessions() async {

test/builtin/claude/tmux_session_test.dart

@@ -104,6 +104,16 @@ void main() {
     });
   });
 
+  group('hasSession', () {
+    test('true on exit 0, false otherwise', () async {
+      runner.exitCode = 0;
+      expect(await tmux.hasSession('clide-claude-foo'), isTrue);
+      expect(runner.calls.last, ['-L', 'clide', 'has-session', '-t', 'clide-claude-foo']);
+      runner.exitCode = 1;
+      expect(await tmux.hasSession('clide-claude-foo'), isFalse);
+    });
+  });
+
   group('sendMessage', () {
     test('loads a bracketed paste buffer then submits with Enter', () async {
       await tmux.sendMessage('clide-claude-foo', 'hello\nworld');