refactor: migrate to monorepo structure with Docker, PocketBase, and e2e tests

- Reorganize into apps/, packages/, docs/, e2e/, pocketbase/ directories
- Add Dockerfiles for web, worker, and PocketBase services
- Add docker-compose.yml for local orchestration
- Add turbo.json for monorepo task management
- Add Playwright e2e test infrastructure
- Add PocketBase backend with migrations
- Remove Vite/Next.js/ESLint/PostCSS config files
- Update package.json with workspace dependencies
- Add .env.example and .dockerignore

Dockerfile.web

@@ -0,0 +1,36 @@
+# Stage 1: Install dependencies
+FROM node:22-alpine AS deps
+WORKDIR /app
+COPY package.json package-lock.json ./
+COPY apps/web/package.json apps/web/package.json
+COPY packages/shared/package.json packages/shared/package.json
+RUN npm ci
+
+# Stage 2: Build the application
+FROM node:22-alpine AS builder
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY --from=deps /app/apps/web/node_modules ./apps/web/node_modules
+COPY . .
+ENV NEXT_TELEMETRY_DISABLED=1
+ENV NODE_ENV=production
+RUN npm run build --workspace=apps/web
+
+# Stage 3: Production runtime
+FROM node:22-alpine AS runner
+WORKDIR /app
+ENV NODE_ENV=production
+ENV NEXT_TELEMETRY_DISABLED=1
+
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nextjs
+
+COPY --from=builder /app/apps/web/public ./apps/web/public
+COPY --from=builder --chown=nextjs:nodejs /app/apps/web/.next/standalone ./
+COPY --from=builder --chown=nextjs:nodejs /app/apps/web/.next/static ./apps/web/.next/static
+
+USER nextjs
+EXPOSE 3000
+ENV PORT=3000
+ENV HOSTNAME="0.0.0.0"
+CMD ["node", "apps/web/server.js"]