feat(a2ui): Implement A2UI backend with question handling and WebSocket support

- Added A2UITypes for defining question structures and answers.
- Created A2UIWebSocketHandler for managing WebSocket connections and message handling.
- Developed ask-question tool for interactive user questions via A2UI.
- Introduced platformUtils for platform detection and shell command handling.
- Centralized TypeScript types in index.ts for better organization.
- Implemented compatibility checks for hook templates based on platform requirements.

.codex/agents/conceptual-planning-agent.md

@@ -157,7 +157,7 @@ When called, you receive:
 - **User Context**: Specific requirements, constraints, and expectations from user discussion
 - **Output Location**: Directory path for generated analysis files
 - **Role Hint** (optional): Suggested role or role selection guidance
-- **context-package.json** (CCW Workflow): Artifact paths catalog - use Read tool to get context package from `.workflow/active/{session}/.process/context-package.json`
+- **context-package.json** : Artifact paths catalog - use Read tool to get context package from `.workflow/active/{session}/.process/context-package.json`
 - **ASSIGNED_ROLE** (optional): Specific role assignment
 - **ANALYSIS_DIMENSIONS** (optional): Role-specific analysis dimensions
 

.codex/agents/test-fix-agent.md

@@ -97,7 +97,7 @@ When task JSON contains implementation_approach array:
   - L1 (Unit): `*.test.*`, `*.spec.*` in `__tests__/`, `tests/unit/`
   - L2 (Integration): `tests/integration/`, `*.integration.test.*`
   - L3 (E2E): `tests/e2e/`, `*.e2e.test.*`, `cypress/`, `playwright/`
-- **context-package.json** (CCW Workflow): Use Read tool to get context package from `.workflow/active/{session}/.process/context-package.json`
+- **context-package.json** : Use Read tool to get context package from `.workflow/active/{session}/.process/context-package.json`
 - Identify test commands from project configuration
 
 ```bash