feat(Production): Complete production deployment infrastructure

- Add comprehensive health check system with multiple endpoints
- Add Prometheus metrics endpoint
- Add production logging configurations (5 strategies)
- Add complete deployment documentation suite:
  * QUICKSTART.md - 30-minute deployment guide
  * DEPLOYMENT_CHECKLIST.md - Printable verification checklist
  * DEPLOYMENT_WORKFLOW.md - Complete deployment lifecycle
  * PRODUCTION_DEPLOYMENT.md - Comprehensive technical reference
  * production-logging.md - Logging configuration guide
  * ANSIBLE_DEPLOYMENT.md - Infrastructure as Code automation
  * README.md - Navigation hub
  * DEPLOYMENT_SUMMARY.md - Executive summary
- Add deployment scripts and automation
- Add DEPLOYMENT_PLAN.md - Concrete plan for immediate deployment
- Update README with production-ready features

All production infrastructure is now complete and ready for deployment.

docker/php/Dockerfile

@@ -1,5 +1,5 @@
 # Dockerfile für PHP-FPM
-FROM php:8.5-rc-fpm AS base
+FROM php:8.5.0RC2-fpm AS base
 
 # System-Abhängigkeiten: Werden selten geändert, daher ein eigener Layer
 RUN apt-get update && apt-get install -y \
@@ -14,6 +14,7 @@ RUN apt-get update && apt-get install -y \
     libavif-dev \
     libxpm-dev \
     libsodium-dev \
+    libpq-dev \
     && apt-get clean \
         && rm -rf /var/lib/apt/lists/*
 
@@ -30,6 +31,7 @@ RUN docker-php-ext-install -j$(nproc) \
     zip \
     pdo \
     pdo_mysql \
+    pdo_pgsql \
     pcntl \
     posix \
     shmop \