# Outcome - Fix Scheduler Concurrency and Browser Stability

## Summary
Successfully implemented fixes for the scheduler concurrency issues and browser instability.

## Changes
- **Scheduler Configuration Validation:**
    - Updated `src/lib/server/scheduler.ts` to validate `intervalMinutes`.
    - Added a check for `NaN` and a minimum interval of 15 minutes.
    - Defaults to 720 minutes if the configuration is invalid.
- **Resource Cleanup:**
    - Refactored `renewInstagramAuth` in `src/lib/server/scheduler.ts` to use a `finally` block for closing `page` and `context`.
    - Ensures resources are released even if an error occurs during renewal.
- **Robust Browser Management:**
    - Updated `src/lib/server/browser.ts` to check `browser.isConnected()`.
    - Automatically re-initializes the browser if it is disconnected or crashed.

## Verification
- The scheduler will now default to a safe interval if misconfigured, preventing console spam.
- Browser crashes will be automatically recovered from on the next scheduler run.
- Resource leaks from failed renewal attempts are prevented.