Add database migration script and deployment guide
Created migration file:
- migrations/001_create_audit_logs_table.sql
* Optimized for existing 4wdcsa database schema
* 7 columns: log_id, user_id, action, status, ip_address, details, created_at
* 8 indexes for performance (primary + 7 covering common queries)
* Foreign key to users table with ON DELETE SET NULL
* JSON column for flexible metadata storage
* Supports all action types (login, payment, booking, membership)
* Includes sample monitoring queries
Created deployment guide:
- DATABASE_MIGRATION_GUIDE.md
* 3 deployment options (phpMyAdmin, CLI, GUI tool)
* Pre/post deployment checklists
* Verification queries
* Rollback procedures
* Performance impact analysis
* Monitoring query examples
* Integration instructions
Ready for immediate deployment to production!
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