feat(video-lab): docker-compose entry + nginx routing (SP-8)

video-lab service: port 18801, REDIS_URL/INTERNAL_API_KEY env,
depends_on redis, /app/data volume mount.
nginx: /api/video/ proxy + /media/video/ direct serve alias.
frontend depends_on + volume mount 추가.
Plan-B-Video Phase 1.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

docker-compose.yml

@@ -90,6 +90,29 @@ services:
       timeout: 5s
       retries: 3
 
+  video-lab:
+    build:
+      context: ./video-lab
+    container_name: video-lab
+    restart: unless-stopped
+    ports:
+      - "18801:8000"
+    environment:
+      - TZ=${TZ:-Asia/Seoul}
+      - REDIS_URL=${REDIS_URL:-redis://redis:6379}
+      - INTERNAL_API_KEY=${INTERNAL_API_KEY:-}
+      - VIDEO_DATA_DIR=/app/data
+      - CORS_ALLOW_ORIGINS=${CORS_ALLOW_ORIGINS:-http://localhost:3007,http://localhost:8080}
+    volumes:
+      - ${RUNTIME_PATH}/data/video:/app/data
+    depends_on:
+      - redis
+    healthcheck:
+      test: ["CMD", "python", "-c", "import urllib.request; urllib.request.urlopen('http://localhost:8000/health')"]
+      interval: 60s
+      timeout: 5s
+      retries: 3
+
   insta-lab:
     build:
       context: ./insta-lab
@@ -265,6 +288,7 @@ services:
       - personal
       - packs-lab
       - travel-proxy
+      - video-lab
     ports:
       - "8080:80"
     volumes:
@@ -274,6 +298,7 @@ services:
       - ${RUNTIME_PATH}/travel-thumbs:/data/thumbs:ro
       - ${RUNTIME_PATH}/data/music:/data/music:ro
       - ${RUNTIME_PATH}/data/videos:/data/videos:ro
+      - ${RUNTIME_PATH}/data/video:/data/video:ro
       - ${RUNTIME_PATH}/data/insta/insta_cards:/data/insta_cards:ro
     extra_hosts:
       - "host.docker.internal:host-gateway"