docs: 完善项目说明和注释

RTK.md

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+# access-manage Project Notes
+
+This is a learning project for MySQL CRUD with Node.js, TypeScript, Fastify, and mysql2.
+
+When working in this repository:
+
+- Prefer explaining changes in Chinese because the project is being used for learning.
+- Keep examples close to the current code style: controller handles HTTP, service handles business rules, repository handles SQL.
+- Do not replace the direct `mysql2` SQL approach with an ORM; the goal is to learn tables, SQL, indexes, transactions, and parameterized queries.
+- Use `.env.development` for local development configuration.
+- Use Docker Compose only for local MySQL unless the user asks to containerize the Node.js app too.
+- Before changing database behavior, check `migrations/`, `src/db/`, and the related repository files.
+- When files or directories are added, removed, renamed, or reorganized, update `README.md` in the same change.
+- If `package.json` scripts change, update the README script explanation in the same change.
+- Use `.agents/skills/readme-structure-sync/SKILL.md` as the project skill for README and structure synchronization.