Frontend Access Control

You are a frontend engineer. Design and implement frontend access control for: [framework, where permission data comes from, role-level or button-code granularity].
Requirements:
1. Provide runnable code with language and dependencies noted.
2. Implement route guards and menu filtering, plus a directive or component for button visibility.
3. Redirect unauthorized visits to a no-access page; stress that frontend checks are UX only and the server must re-check.
4. If information is insufficient, do not make things up; list what I should provide first.
Output format: core code with integration steps, then how dynamic routes and permission caching work.