tickets reader: adopt retained ReaderNav + static tab

Bring the tickets detail in line with markdown/decisions (D-81). The
controller loads on 'load' (the channel the retained ReaderNav emits),
the extension reveals the static tickets.detail tab on selection instead
of the per-click uncontribute/contribute churn (the T-188 anti-pattern),
and the view grabs nav.current on mount and wraps in ClidePaneChrome
with a ReaderActionBar — pin toggle left, back/forward + jump-to-pin
right, no edit pencil (tickets are pql records, not files). The
controller drops its now-unused panels dependency.

Also adds the tickets builtin's first tests — the sidebar list
(load/sections/filter/select/empty/error/refresh) and the detail reader
(load, nav, pin, parents/decisions/status) — covering a pre-existing gap
exposed by bringing these files under test.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.pql/changelog/ticket_history/2026-06.sql

@@ -3,3 +3,5 @@ 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-197', 'status', 'backlog', 'done', NULL, '2026-06-01 10:45:14', '2026-06-01 10:45:14', '2026-06-01 10:45:14', NULL, '7d9a5a6040ccaff63f95c106c088f7b5', 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-196', 'status', 'backlog', 'done', NULL, '2026-06-01 10:45:14', '2026-06-01 10:45:14', '2026-06-01 10:45:14', NULL, 'a6afc45a7b24dc8dc65a0a6cda319f7d', 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-198', 'status', 'backlog', 'done', NULL, '2026-06-01 11:31:39', '2026-06-01 11:31:39', '2026-06-01 11:31:39', NULL, '5abb12dc3c3b72a4bccf1760204fe1ae', 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-199', 'status', 'backlog', 'in_progress', NULL, '2026-06-01 11:38:40', '2026-06-01 11:38:40', '2026-06-01 11:38:40', NULL, '44bad6e0417988025dae8606879de2a4', 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-199', 'status', 'in_progress', 'done', NULL, '2026-06-01 12:35:04', '2026-06-01 12:35:04', '2026-06-01 12:35:04', NULL, '56c14e217540c5789e70317aa8b6461f', 1) ON CONFLICT(hash) DO NOTHING;

.pql/changelog/tickets/2026-06.sql

@@ -3,3 +3,4 @@ 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-197', 'bug', NULL, 'Editor pane never reveals on editor.open (edit button, file-tree open)', 'Opening a file in the editor (the reader''s edit pencil, a non-.md file-tree click, a decision''s edit) calls editor.open and the daemon opens the buffer, but the editor pane never appears in the workspace slot above the Claude pane. Root cause: EditorExtension contributes a workspace tab (editor.active, priority 80) but has no activate() that reveals/activates it. editor.opened is emitted on the DaemonBus, but the EditorController that handles it only exists once EditorView is mounted — and nothing ever activates the editor tab to mount it. Fix: add EditorExtension.activate() subscribing to the editor.opened / editor.active-changed DaemonEvents and calling panels.activateTab(Slots.workspace, ''editor.active''). EditorView.hydrate() already pulls the active buffer on mount, so reveal-then-hydrate avoids any publish/subscribe race.', 'done', 'high', NULL, NULL, NULL, '2026-06-01 08:58:19', '2026-06-01 10:45:14', NULL, '05ae54e31d0c9befdbfef2fe096737c0', 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-196', 'bug', 'T-186', 'Decision reader: first click switches tab but doesn''t load (lost on tab mount)', 'Clicking a D-record activates the decisions.detail context-panel tab but does not load the record; only the SECOND click (any record) works. Root cause: DecisionDetailView subscribes to the ''selection'' MessageBus channel in didChangeDependencies, which runs only AFTER the extension''s activateTab mounts the view. The bus is broadcast (no replay), so the ''selection'' message that triggered the reveal is already gone — the view subscribes too late and misses it. The markdown extension already solved this: activateTab, then addPostFrameCallback -> re-publish on a separate ''load'' channel the viewer subscribes to, so the load fires after the viewer mounts+subscribes. Fix: mirror that — DecisionDetailView subscribes to ''load''; DecisionsExtension forwards ''selection'' -> post-frame ''load'' after activateTab.', 'done', 'high', NULL, NULL, NULL, '2026-06-01 08:58:10', '2026-06-01 10:45:14', NULL, 'c87a8726edd727831291bd1055e39ae1', 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-198', 'task', 'T-186', 'Reader pin UX: pin icon, toggle, left-toggle/right-navigate', 'Polish on the reader action bar (follows T-190). (1) push-pin glyph instead of the chain/link icon; (2) the pin button TOGGLES pinned state (tap to pin current, tap again to unpin) rather than set/replace; (3) layout split — pin/unpin toggle on the LEFT, jump-to-pin moved into the navigator (back/forward) on the right. Added ReaderNav.togglePin(), PhosphorIcons.pushPin (0xe3e2) + arrowUUpLeft (0xe08a), and an active state on the action button.', 'done', 'low', NULL, NULL, NULL, '2026-06-01 11:11:32', '2026-06-01 11:31:39', NULL, 'd2392d2e56ffc552c8f4f8993350d939', 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-199', 'task', 'T-186', 'Tickets detail: adopt retained ReaderNav (back/forward + pin) + static tab', 'Bring the tickets detail reader in line with markdown/decisions (T-196/D-81). Adopt the retained ReaderNav(''builtin.tickets'', dataKey ''id''): the nav records selections + emits ''load''; the controller loads on ''load'' (not ''selection''); the view grabs nav.current on mount and wraps in ClidePaneChrome with a ReaderActionBar (pin toggle left; back/forward + jump-to-pin right; NO edit pencil since tickets are pql records, not files). Also drop the per-click uncontribute/contribute churn in TicketsExtension (the T-188 anti-pattern) — use the static tickets.detail tab + reveal on selection. TicketDetailController loses its panels dependency (reveal moves to the extension).', 'done', 'medium', NULL, NULL, NULL, '2026-06-01 11:38:32', '2026-06-01 12:35:04', NULL, '82fe1aefd26d3f53872cc6983d1ae52d', 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);