Outcome - Fix Auth Scheduler Env Vars

Summary

Successfully fixed the environment variable loading issue in the authentication scheduler and updated the frequency configuration to support minutes.

Refactored Scheduler Logic:
- Updated src/lib/server/scheduler.ts to use $env/dynamic/private for reliable environment variable access.
- Changed configuration from intervalHours to intervalMinutes.
- Updated startScheduler to calculate interval in milliseconds based on minutes.
Updated Documentation:
- Updated src/hooks.server.ts JSDoc to reflect the new configuration.
Updated Configuration:
- Updated .env.local to set AUTH_SCHEDULER_INTERVAL_MINUTES=5.
Verified Tests:
- Updated src/tests/scheduler.spec.ts to mock $env/dynamic/private and verify the new logic.
- All tests passed.

feature/FixAuthSchedulerEnvVars