Initial commit: MOPC platform with Docker deployment setup

Full Next.js 15 platform with tRPC, Prisma, PostgreSQL, NextAuth.
Includes production Dockerfile (multi-stage, port 7600), docker-compose
with registry-based image pull, Gitea Actions CI workflow, nginx config
for portal.monaco-opc.com, deployment scripts, and DEPLOYMENT.md guide.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.env.example

@@ -0,0 +1,70 @@
+# =============================================================================
+# MOPC Platform Environment Variables
+# =============================================================================
+# Copy this file to .env.local for local development
+# Copy to .env for production
+
+# =============================================================================
+# DATABASE
+# =============================================================================
+DATABASE_URL="postgresql://mopc:password@localhost:5432/mopc"
+
+# Docker Compose database credentials
+POSTGRES_USER="mopc"
+POSTGRES_PASSWORD="devpassword"
+POSTGRES_DB="mopc"
+
+# =============================================================================
+# AUTHENTICATION (NextAuth.js)
+# =============================================================================
+# Production URL (no trailing slash)
+NEXTAUTH_URL="https://monaco-opc.com"
+
+# Generate with: openssl rand -base64 32
+NEXTAUTH_SECRET="your-secret-key-here"
+
+# =============================================================================
+# FILE STORAGE (MinIO)
+# =============================================================================
+# Internal endpoint for server-to-server communication
+MINIO_ENDPOINT="http://localhost:9000"
+
+# Public endpoint for browser-accessible URLs (pre-signed URLs)
+# Set this when MinIO is behind a reverse proxy or external to Docker network
+# If not set, falls back to MINIO_ENDPOINT
+# MINIO_PUBLIC_ENDPOINT="https://storage.monaco-opc.com"
+
+MINIO_ACCESS_KEY="minioadmin"
+MINIO_SECRET_KEY="minioadmin"
+MINIO_BUCKET="mopc-files"
+
+# =============================================================================
+# EMAIL (SMTP via Poste.io)
+# =============================================================================
+SMTP_HOST="localhost"
+SMTP_PORT="587"
+SMTP_USER="noreply@monaco-opc.com"
+SMTP_PASS="your-smtp-password"
+EMAIL_FROM="MOPC Platform <noreply@monaco-opc.com>"
+
+# =============================================================================
+# AI (OpenAI for Smart Assignment)
+# =============================================================================
+# Optional: Enable AI-powered jury assignment suggestions
+OPENAI_API_KEY=""
+OPENAI_MODEL="gpt-4o"
+
+# =============================================================================
+# APPLICATION SETTINGS
+# =============================================================================
+# Node environment
+NODE_ENV="development"
+
+# Maximum file upload size in bytes (500MB for videos)
+MAX_FILE_SIZE="524288000"
+
+# Session duration in seconds (24 hours)
+SESSION_MAX_AGE="86400"
+
+# Magic link expiry in seconds (15 minutes)
+MAGIC_LINK_EXPIRY="900"