Optimize tests: Replace DatabaseMigrations with RefreshDatabase for f…

[AbdulrahmanReda70]

Summary

Replaces DatabaseMigrations with RefreshDatabase across all test files for significant performance improvement while maintaining test isolation and reliability.

Why the Change?

DatabaseMigrations was very slow because:

• Runs php artisan migrate:fresh --seed for every single test
• Tears down and rebuilds database schema for each individual test
• Massive I/O overhead with no reuse

RefreshDatabase is faster because:

• Sets up database schema once at start
• Uses transactions that auto-rollback after each test
• Laravel's recommended approach for testing

Safety ✅

• All integration tests still pass
• Same test isolation guarantees
• No breaking changes
• Follows Laravel best practices