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

@@ -0,0 +1,51 @@
+# Multi-stage Dockerfile for Next.js production build
+
+# Stage 1: Dependencies
+FROM node:22-alpine AS deps
+RUN apk add --no-cache libc6-compat
+RUN corepack enable && corepack prepare pnpm@latest --activate
+WORKDIR /app
+
+# Copy package files
+COPY package.json pnpm-lock.yaml* ./
+RUN pnpm install --frozen-lockfile
+
+# Stage 2: Builder
+FROM node:22-alpine AS builder
+RUN corepack enable && corepack prepare pnpm@latest --activate
+WORKDIR /app
+
+# Copy dependencies from deps stage
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+
+# Set environment variables for build
+ENV NEXT_TELEMETRY_DISABLED=1
+
+# Build Next.js
+RUN pnpm build
+
+# Stage 3: Runner
+FROM node:22-alpine AS runner
+WORKDIR /app
+
+ENV NODE_ENV=production
+ENV NEXT_TELEMETRY_DISABLED=1
+
+# Create non-root user
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nextjs
+
+# Copy standalone build
+COPY --from=builder /app/public ./public
+COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
+COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
+
+USER nextjs
+
+EXPOSE 3000
+
+ENV PORT=3000
+ENV HOSTNAME="0.0.0.0"
+
+CMD ["node", "server.js"]