feat: Enhance team lifecycle roles with checkpoint handling and inner loop execution

- Added checkpoint gate handling to the coordinator role, defining behavior based on quality gate results.
- Updated planner role to utilize inner loop pattern for structured implementation planning and reporting.
- Revised writer role to implement inner loop for document generation, delegating CLI execution to a subagent.
- Introduced a new doc-generation subagent for isolated CLI calls and document generation strategies.
- Enhanced UI components in the frontend to display job statuses, last run times, and improved error handling.
- Updated localization files to include new strings for job details and status banners.
- Improved CSS styles for markdown previews to enhance readability and presentation.

ccw/frontend/src/lib/api.ts

@@ -1642,6 +1642,7 @@ export async function unarchiveMemory(memoryId: string, projectPath?: string): P
 
 export interface ExtractionStatus {
   total_stage1: number;
+  lastRun?: number;
   jobs: Array<{
     job_key: string;
     status: string;