Initial commit: nightly iOS app + Supabase backend

iOS SwiftUI app with Supabase auth/realtime, Node.js backend,
Docker/Supabase self-hosted infrastructure, and APNs scheduler.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/docker-compose.yml

@@ -0,0 +1,66 @@
+services:
+  api:
+    build: ./api
+    restart: unless-stopped
+    env_file: .env
+    environment:
+      DATABASE_URL: postgres://nightly:${DB_PASSWORD}@db:5432/nightly
+      REDIS_URL: redis://redis:6379
+      NODE_ENV: production
+    depends_on:
+      db:
+        condition: service_healthy
+      redis:
+        condition: service_started
+    networks:
+      - internal
+
+  db:
+    image: postgres:16-alpine
+    restart: unless-stopped
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+      - ./api/src/db/schema.sql:/docker-entrypoint-initdb.d/01_schema.sql
+    environment:
+      POSTGRES_DB: nightly
+      POSTGRES_USER: nightly
+      POSTGRES_PASSWORD: ${DB_PASSWORD}
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U nightly"]
+      interval: 5s
+      timeout: 5s
+      retries: 10
+    networks:
+      - internal
+
+  redis:
+    image: redis:7-alpine
+    restart: unless-stopped
+    volumes:
+      - redis_data:/data
+    networks:
+      - internal
+
+  caddy:
+    image: caddy:2-alpine
+    restart: unless-stopped
+    ports:
+      - "80:80"
+      - "443:443"
+      - "443:443/udp"
+    volumes:
+      - ./Caddyfile:/etc/caddy/Caddyfile
+      - caddy_data:/data
+      - caddy_config:/config
+    networks:
+      - internal
+
+volumes:
+  postgres_data:
+  redis_data:
+  caddy_data:
+  caddy_config:
+
+networks:
+  internal:
+    driver: bridge