Add docs, CI workflows, agent config, and supporting files

- Add MkDocs documentation with API reference for the CLI module
- Add CI/CD and Claude Code review GitHub Actions workflows
- Add Dependabot and Renovate configuration for dependency updates
- Add .claude settings, agents, and local-qa skill with QA script
- Add AGENTS.md with repository guidelines and CLAUDE.md symlink
- Update README.md with installation, usage examples, and commands

https://claude.ai/code/session_01YW3YHru8wRH9dvHnBX7xf1

.agents/skills/local-qa/SKILL.md

@@ -0,0 +1,25 @@
+# local-qa
+
+Run local QA checks (format, lint, test) on the repository.
+
+## When to use
+
+After making changes to repository files, run `scripts/qa.sh` to validate formatting, linting, and tests.
+
+## Steps
+
+1. Execute `scripts/qa.sh` and capture the results.
+2. Report successes, failures, warnings, and any modified files.
+
+## If tools are missing
+
+Install them following this priority order:
+
+1. Project package managers (`uv`, `poetry`, npm scripts)
+2. System package managers (`brew`, `apt`)
+3. Language-specific installers (`pipx`, `pip`, `npm`, `go install`)
+
+## Constraints
+
+- Only execute QA and tool-installation commands.
+- If installation fails or requires unavailable privileges, report the attempt and exact failure, then stop.