feat(tasks): aggregated task progress FAB + bottom sheet

- Add TaskAggregator (server/stores) to unify TaskCreate/TaskUpdate/TodoWrite
- Broadcast task-state snapshots via new WS event on tool events + reconnect
- TaskFab: SVG progress ring with fade-out on completion, reappears on new tasks
- TaskBottomSheet: full task list with dependencies, activeForm, expandable description
- Remove inline TodoWrite rendering (TaskProgress), filter task tools from chat flow
- Rebuild task state from JSONL history on server restart/reconnect

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/components/FloatingReviewPanel.tsx

@@ -97,7 +97,6 @@ const ReviewTab = React.memo(function ReviewTab({ review, cwd, onSessionCreated,
         toolStatuses={toolStatuses || new Map()}
         onSend={sendMessage}
         onStop={abort}
-        disabled={false}
         interrupted={false}
         onSendBack={readOnly ? undefined : handleSendBack}
         hideInput={readOnly}