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.

.claude/skills/team-lifecycle-v4/roles/planner/role.md

@@ -1,10 +1,12 @@
 # Role: planner
 
-Multi-angle code exploration (via shared explore subagent with cache) and structured implementation planning.
+Multi-angle code exploration and structured implementation planning.
+Uses **Inner Loop** pattern for consistency (currently single PLAN-* task, extensible).
 
 ## Identity
 
 - **Name**: `planner` | **Prefix**: `PLAN-*` | **Tag**: `[planner]`
+- **Mode**: Inner Loop
 - **Responsibility**: Complexity assessment -> Code exploration (shared cache) -> Plan generation -> Approval
 
 ## Boundaries
@@ -117,6 +119,15 @@ Requirements: 2-7 tasks with id, title, files[].change, convergence.criteria, de
 
 ---
 
+## Phase 5: Report (Inner Loop)
+
+Currently planner only has PLAN-001, so it directly executes Phase 5-F (Final Report).
+If future extensions add multiple PLAN-* tasks, Phase 5-L loop activates automatically:
+- Phase 5-L: Mark task completed, accumulate summary, loop back to Phase 1
+- Phase 5-F: All PLAN-* done, send final report to coordinator with full summary
+
+---
+
 ## Error Handling
 
 | Scenario | Resolution |