Add full application structure with auth, dashboard, and Docker

- Add Dockerfile for production deployment
- Add authentication pages (login, signup)
- Add dashboard layout and navigation
- Add project pages with chat component
- Add shadcn/ui components
- Add Supabase client configuration
- Add middleware for auth protection
- Update next.config.ts for standalone output

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Dockerfile

@@ -0,0 +1,49 @@
+FROM node:20-alpine AS base
+
+# Install dependencies only when needed
+FROM base AS deps
+RUN apk add --no-cache libc6-compat
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm ci
+
+# Rebuild the source code only when needed
+FROM base AS builder
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+
+# Build arguments for environment variables
+ARG NEXT_PUBLIC_SUPABASE_URL
+ARG NEXT_PUBLIC_SUPABASE_ANON_KEY
+ARG NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY
+ARG NEXT_PUBLIC_SITE_URL
+
+ENV NEXT_PUBLIC_SUPABASE_URL=$NEXT_PUBLIC_SUPABASE_URL
+ENV NEXT_PUBLIC_SUPABASE_ANON_KEY=$NEXT_PUBLIC_SUPABASE_ANON_KEY
+ENV NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY=$NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY
+ENV NEXT_PUBLIC_SITE_URL=$NEXT_PUBLIC_SITE_URL
+
+RUN npm run build
+
+# Production image
+FROM base AS runner
+WORKDIR /app
+
+ENV NODE_ENV=production
+
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nextjs
+
+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"]