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>

Dockerfile.dev

@@ -0,0 +1,20 @@
+# Development Dockerfile with hot reload
+
+FROM node:22-alpine
+
+RUN corepack enable && corepack prepare pnpm@latest --activate
+
+WORKDIR /app
+
+# Copy package files
+COPY package.json pnpm-lock.yaml* ./
+
+# Install dependencies
+RUN pnpm install
+
+# Copy application code
+COPY . .
+
+EXPOSE 3000
+
+CMD ["pnpm", "dev"]