feat: integrate First8 Marketing hyper-personalization system

Enhanced Umami Analytics with First8 Marketing integration for
hyper-personalized recommendation engine.

Database Enhancements:
- PostgreSQL 17 with Apache AGE 1.6.0 (graph database)
- TimescaleDB 2.23.0 (time-series optimization)
- Extended schema for WooCommerce event tracking
- Custom tables for recommendation engine integration

Features Added:
- Real-time ETL pipeline to recommendation engine
- Extended event tracking (WordPress + WooCommerce)
- Graph database for relationship mapping
- Time-series optimization for analytics queries
- Custom migrations for hyper-personalization

Documentation:
- Updated README with integration details
- Added system architecture documentation
- Documented data flow and components
- Preserved original Umami Software credits

Integration Components:
- First8 Marketing Track plugin (event tracking)
- Recommendation Engine (ML backend)
- First8 Marketing Recommendation Engine plugin (presentation)

Status: Production-ready
Version: Based on Umami latest + First8 Marketing enhancements

.gitignore

@@ -42,3 +42,40 @@ yarn-error.log*
 
 *.dev.yml
 
+# database files
+*.db
+*.sqlite
+*.sqlite3
+*.db-journal
+
+# prisma generated
+prisma/generated/
+
+# cache
+.cache/
+.eslintcache
+.stylelintcache
+
+# temporary files
+tmp/
+temp/
+*.tmp
+*.bak
+
+# OS files
+Thumbs.db
+Desktop.ini
+*~
+
+# secrets
+*.key
+*.pem
+secrets/
+
+# logs
+logs/
+*.log
+
+# custom
+public/uploads/
+public/cache/