This commit adds new documentation to enhance agent readiness within the repository:
- `AGENTS.md`: Provides a high-level overview of the project's purpose, technical stack, key workflows, and repository structure.
- `.agents/gitea_api.md`: Contains detailed instructions and examples for programmatic interaction with the Gitea API, covering operations like fetching and creating issues/pull requests, along with a quick reference of API capabilities.
These additions aim to streamline future autonomous operations by centralizing essential repository knowledge and API usage guidelines. It replaces previous ad-hoc methods for interacting with Gitea.