feat(kimi): add Kimi Code CLI integration support

Add complete support for Kimi Code CLI agent format.

- Add convert_kimi() function to generate YAML agent specs
- Add install_kimi() function to install agents to ~/.config/kimi/agents/
- Add Kimi to tool detection and installer UI
- Add integrations/kimi/ directory (generated files gitignored)
- Update integrations/README.md with Kimi documentation
- Add generated agent directories to .gitignore

Users can generate agents with: ./scripts/convert.sh --tool kimi

.gitignore

@@ -75,4 +75,6 @@ integrations/aider/CONVENTIONS.md
 integrations/windsurf/.windsurfrules
 integrations/openclaw/*
 integrations/qwen/agents/
+integrations/kimi/*/
 !integrations/openclaw/README.md
+!integrations/kimi/README.md