- Refactor migrations with idempotency checks and better error handling
* Add SQLAlchemy inspector checks for table/column existence
* Improve error messages and handling for schema operations
* Make migrations safe to run multiple times
* Update 27 migration files with enhanced error handling patterns
- Add missing schema columns via new migrations
* Migration 095: Add ui_show_issues column to users table
* Migration 096: Add portal_issues_enabled column to clients table
- Enhance Settings model error handling
* Improve detection of schema errors (table/column missing)
* Better handling of SQLAlchemy exceptions during migrations
* More comprehensive error checking for OperationalErrors
- Fix database auto-switching logic in app initialization
* Respect explicit DATABASE_URL setting to prevent unwanted switches
* Only auto-switch to PostgreSQL when not explicitly configured
- Update docker entrypoint script with migration improvements
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