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/agents/cli-explore-agent.md

@@ -78,14 +78,14 @@ rg "^import .* from " -n | head -30
 ### Gemini Semantic Analysis (deep-scan, dependency-map)
 
 ```bash
-cd {dir} && gemini -p "
+ccw cli exec "
 PURPOSE: {from prompt}
 TASK: {from prompt}
 MODE: analysis
 CONTEXT: @**/*
 EXPECTED: {from prompt}
 RULES: {from prompt, if template specified} | analysis=READ-ONLY
-"
+" --tool gemini --cd {dir}
 ```
 
 **Fallback Chain**: Gemini → Qwen → Codex → Bash-only