refactor: Remove Directus infrastructure, simplify Docker deployment

- Remove Directus CMS infrastructure (docker-compose.infrastructure.yml)
- Simplify to Astro-only deployment using existing Supabase backend
- Clean up docker-compose.override.yml to focus on local development
- Update NGINX config to proxy only to Astro app
- Remove Directus-related npm scripts and database management tools
- Streamline deployment guide for Supabase + Astro architecture

Deployment workflow:
- Local: npm run docker:dev (Astro + Supabase hosted)
- Production: npm run docker:astro:up (Astro only)

Benefits:
- Simpler architecture with proven Supabase backend
- Faster deployments (Astro only)
- Zero database downtime
- Reduced operational complexity

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

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

package.json

@@ -25,15 +25,8 @@
     "docker:astro:up": "docker-compose -f docker-compose.astro.yml up -d --build",
     "docker:astro:down": "docker-compose -f docker-compose.astro.yml down",
     "docker:astro:logs": "docker-compose -f docker-compose.astro.yml logs -f",
-    "docker:infrastructure:up": "docker-compose -f docker-compose.infrastructure.yml up -d",
-    "docker:infrastructure:down": "docker-compose -f docker-compose.infrastructure.yml down",
-    "docker:infrastructure:logs": "docker-compose -f docker-compose.infrastructure.yml logs -f",
     "docker:dev": "docker-compose up -d",
-    "docker:dev:build": "docker-compose up -d --build",
-    "db:backup": "./scripts/db-safety.sh backup",
-    "db:restore": "./scripts/db-safety.sh restore",
-    "db:reset": "./scripts/db-safety.sh reset",
-    "db:status": "./scripts/db-safety.sh status"
+    "docker:dev:build": "docker-compose up -d --build"
   },
   "dependencies": {
     "@astrojs/check": "^0.9.4",