refactor: Clean up logging system with LOG_LEVEL filtering

- Add LOG_LEVEL env variable support (debug, info, warn, error)
- Default to 'info' level for production-ready logs
- Integrate Morgan HTTP logging with custom logger
- Remove console.logs and replace with custom logger
- Remove sensitive password debug logs from email service
- Remove noisy warn logs from email sync and event notifier
- Add gray color for timestamps to improve readability

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/middlewares/auth/resourceAccessMiddleware.js

@@ -1,6 +1,7 @@
 import { db } from '../../config/database.js';
 import { companyUsers, projectUsers, todoUsers } from '../../db/schema.js';
 import { eq, and } from 'drizzle-orm';
+import { logger } from '../../utils/logger.js';
 
 /**
  * Univerzálny middleware pre kontrolu prístupu k resources
@@ -104,7 +105,7 @@ export const checkResourceAccess = (resourceType, paramName) => {
 
       next();
     } catch (error) {
-      console.error('Resource access check error:', error);
+      logger.error('Resource access check error', error);
       return res.status(500).json({
         success: false,
         error: {