feat(web): workspace components — ComparePane, Memory page, McpDialog, error boundaries, message-parts

- Add ComparePane.tsx: side-by-side AI response comparison
- Add Memory.tsx: memory management page with CRUD UI
- Add McpPermissionDialog.tsx: MCP tool permission approval dialog
- Add McpResponseDisplay.tsx: MCP response visualization
- Add MessageBoundary.tsx + MessageListErrorBoundary.tsx: error resilience
- Add EmptyState.tsx: contextual empty state component
- Add KeyboardShortcutsDialog.tsx: keyboard shortcut reference
- Add message-parts/: ActionRow, CompactCard, MistakeRecoverySentinel, ReasoningBlock, SendToTerminalMenu, StatsLine, SummaryCard
- Add useDraftPersistence.ts: draft message persistence hook
- Add useTerminals.ts: terminal session management hook
- Add keyboard-shortcuts.ts + tool-utils.ts: shared utilities
- Extend components: ChatInput, MessageBubble, MessageList, Workspace, panes
- Extend hooks: useTerminalSocket, useSessionStream test suite
- Update pages: Home, Project — workspace layout and session flow

apps/web/src/hooks/terminal/useTerminalSocket.ts

@@ -23,6 +23,8 @@ interface SocketDeps {
   termRef: React.MutableRefObject<Terminal | null>;
   sessionId: string;
   paneId: string;
+  description?: string;
+  parentAgent?: string;
   fit: TerminalFit['fit'];
   getSize: TerminalFit['getSize'];
   setSize: TerminalFit['setSize'];
@@ -40,6 +42,8 @@ export function useTerminalSocket({
   termRef,
   sessionId,
   paneId,
+  description,
+  parentAgent,
   fit,
   getSize,
   setSize,
@@ -276,7 +280,7 @@ export function useTerminalSocket({
       fit();
       const { cols, rows } = getSize();
       api.terminals
-        .start(sessionId, paneId, cols, rows)
+        .start(sessionId, paneId, cols, rows, description, parentAgent)
         .catch(() => {
           /* WS handler will ensureSession itself — non-fatal */
         })