feat: initial NFC Attendance Hub implementation

- Multi-tenant client management with unique API keys
- Semaphore SMS integration (per-client key + sender name + credit balance)
- DB-based SMS queue with 3-attempt retry and exponential backoff
- Failed SMS dashboard with manual retry button
- Reports page with date/client filter and CSV export
- Admin auth via NextAuth (email/password)
- Docker Compose setup (app + PostgreSQL 16)
- Prisma 5 schema with SmsQueue, SmsLog, Client, User models

Tech: Next.js 14 App Router + TypeScript + Tailwind CSS + Prisma + PostgreSQL

docker-compose.yml

@@ -0,0 +1,40 @@
+version: '3.9'
+
+services:
+  postgres:
+    image: postgres:16-alpine
+    container_name: nfchub-postgres
+    restart: unless-stopped
+    environment:
+      POSTGRES_DB: nfchub
+      POSTGRES_USER: nfchub
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-nfchubpass}
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    ports:
+      - "5433:5432"
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U nfchub"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  app:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: nfchub-app
+    restart: unless-stopped
+    depends_on:
+      postgres:
+        condition: service_healthy
+    environment:
+      DATABASE_URL: postgresql://nfchub:${POSTGRES_PASSWORD:-nfchubpass}@postgres:5432/nfchub
+      NEXTAUTH_URL: ${NEXTAUTH_URL:-http://localhost:3000}
+      NEXTAUTH_SECRET: ${NEXTAUTH_SECRET:-change-me-in-production}
+      INTERNAL_API_KEY: ${INTERNAL_API_KEY:-change-me-internal}
+    ports:
+      - "3000:3000"
+
+volumes:
+  postgres_data: