Refactor workflow session commands to utilize ccw CLI for session management

- Updated session completion process to use `ccw session` commands for listing, reading, and updating session statuses.
- Enhanced session listing command to provide metadata and statistics using `ccw session list` and `ccw session stats`.
- Streamlined session resume functionality with `ccw session` commands for checking status and updating session state.
- Improved session creation process by replacing manual directory and metadata handling with `ccw session init`.
- Introduced `session_manager` tool for simplified session operations, including listing, updating, and archiving sessions.
- Updated conflict resolution tools to generate structured output in `conflict-resolution.json` instead of markdown files.
- Enhanced TDD and UI design tools to utilize `ccw cli exec` for executing analysis commands, improving integration with the workflow.

.claude/skills/command-guide/reference/commands/workflow/tdd-verify.md

@@ -127,7 +127,7 @@ ccw session read {sessionId} --type task --raw | jq -r '.meta.agent'
 **Gemini analysis for comprehensive TDD compliance report**
 
 ```bash
-cd project-root && gemini -p "
+ccw cli exec "
 PURPOSE: Generate TDD compliance report
 TASK: Analyze TDD workflow execution and generate quality report
 CONTEXT: @{.workflow/active/{sessionId}/.task/*.json,.workflow/active/{sessionId}/.summaries/*,.workflow/active/{sessionId}/.process/tdd-cycle-report.md}
@@ -139,7 +139,7 @@ EXPECTED:
 - Red-Green-Refactor cycle validation
 - Best practices adherence assessment
 RULES: Focus on TDD best practices and workflow adherence. Be specific about violations and improvements.
-" > .workflow/active/{sessionId}/TDD_COMPLIANCE_REPORT.md
+" --tool gemini --cd project-root > .workflow/active/{sessionId}/TDD_COMPLIANCE_REPORT.md
 ```
 
 **Output**: TDD_COMPLIANCE_REPORT.md