refactor: consolidate CLI commands and templates structure

- Consolidate Gemini, Qwen, and Codex commands into unified CLI commands
- Add new code-analysis mode template
- Update context-gather documentation
- Remove redundant tool-specific command files

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

.claude/commands/workflow/tools/context-gather.md

@@ -296,6 +296,6 @@ rg -A 2 -B 2 "{keywords}" --type-add 'source:*.{ts,js,py,go}' -t source --max-co
 - File relevance accuracy rate >80%
 
 ## Related Commands
-- `/analysis:run` - Consumes output of this command for analysis
+- `/workflow:tools:concept-enhanced` - Consumes output of this command for analysis
 - `/workflow:plan` - Calls this command to gather context
 - `/workflow:status` - Can display context collection status