refactor: remove legacy scheduling and analytics code

- Deleted the scheduler module and its associated functions, transitioning to OS-level scheduling.
- Removed the Analytics module and its related interfaces, retaining only a placeholder for backward compatibility.
- Updated ConfigValidator to warn about legacy schedule and analytics configurations.
- Cleaned up StartupValidator to remove diagnostics and schedule validation logic.
- Adjusted Load.ts to handle legacy flags for diagnostics and analytics.
- Removed unused diagnostics capturing functionality.

compose.yaml

@@ -11,25 +11,12 @@ services:
       - ./sessions:/app/sessions
 
     environment:
-      TZ: "America/Toronto" # Set your timezone for proper scheduling (used by image and scheduler)
+      TZ: "America/Toronto" # Set your timezone for logging (and cron if enabled)
       NODE_ENV: "production"
       # Force headless when running in Docker (uses Chromium Headless Shell only)
       FORCE_HEADLESS: "1"
       
-      # ============================================================
-      # SCHEDULING MODE: Choose one
-      # ============================================================
-      # Option 1: Built-in JavaScript Scheduler (default, recommended)
-      # - No additional setup needed
-      # - Uses config.jsonc schedule settings
-      # - Lighter resource usage
-      #SCHEDULER_DAILY_JITTER_MINUTES_MIN: "2"
-      #SCHEDULER_DAILY_JITTER_MINUTES_MAX: "10"
-      #SCHEDULER_PASS_TIMEOUT_MINUTES: "180"
-      #SCHEDULER_FORK_PER_PASS: "true"
-      
-      # Option 2: Native Cron (for users who prefer traditional cron)
-      # Uncomment these lines to enable cron instead:
+      # Optional: enable in-container cron scheduling
       #USE_CRON: "true"
       #CRON_SCHEDULE: "0 9 * * *"  # Daily at 9 AM (see https://crontab.guru)
       #RUN_ON_START: "true"         # Run once immediately on container start
@@ -38,5 +25,5 @@ services:
     security_opt:
       - no-new-privileges:true
 
-    # Default: use built-in scheduler (entrypoint handles mode selection)
-    command: ["npm", "run", "start:schedule"]
+    # Default: single run per container start
+    command: ["node", "--enable-source-maps", "./dist/index.js"]