feat: initial commit - Scrapyd UI web interface

- Next.js 16.0.1 + React 19.2.0 + Tailwind CSS 4.1.16
- Complete Scrapyd API integration (all 12 endpoints)
- Dashboard with real-time job monitoring
- Projects management (upload, list, delete)
- Spiders management with scheduling
- Jobs monitoring with filtering and cancellation
- System status monitoring
- Dark/light theme toggle with next-themes
- Server-side authentication via environment variables
- Docker deployment with multi-stage builds
- GitHub Actions CI/CD workflow

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

docker-compose.dev.yml

@@ -0,0 +1,30 @@
+version: '3.8'
+
+services:
+  scrapy-ui-dev:
+    build:
+      context: .
+      dockerfile: Dockerfile.dev
+    image: scrapy-ui:dev
+    container_name: scrapy-ui-dev
+    restart: unless-stopped
+    ports:
+      - "3000:3000"
+    volumes:
+      - .:/app
+      - /app/node_modules
+      - /app/.next
+    environment:
+      - NODE_ENV=development
+      - SCRAPYD_URL=${SCRAPYD_URL:-https://scrapy.pivoine.art}
+      - SCRAPYD_USERNAME=${SCRAPYD_USERNAME}
+      - SCRAPYD_PASSWORD=${SCRAPYD_PASSWORD}
+    env_file:
+      - .env.local
+    networks:
+      - scrapy-network
+    command: pnpm dev
+
+networks:
+  scrapy-network:
+    driver: bridge