Resolve remaining frontend hook lint warnings

[Mosas2000]

npm run lint in frontend/ still reports warnings even though the command exits successfully.

Current warnings:

• src/hooks/useCachedData.js:103 and src/hooks/useCachedData.js:106
  • React Hook dependency warning around timeoutIdRef.current
  • Missing dependency: loadData
• src/hooks/usePaginatedEvents.js:93
  • Missing dependency: loadPage

Why this matters:

• These warnings can hide stale closure or cleanup bugs.
• The repository should ideally keep lint output clean, especially for hook logic.

Expected result:

• npm run lint should complete without warnings in the frontend workspace.

Notes:

• Please fix the hook dependency patterns directly rather than suppressing the warnings.