chore: scaffold monorepo for EventSnap

- Rust/Axum backend skeleton with all crates, multi-stage Dockerfile
- SvelteKit + TypeScript frontend with Tailwind CSS v4, adapter-node, Dockerfile
- docker-compose.yml: db (postgres:16) → app → frontend → caddy with healthcheck and named volumes
- Caddyfile: TLS via Let's Encrypt, cache headers, API/media routing to backend
- .env.example: all environment variables documented with defaults
- README.md: project overview, features, stack, deploy guide, roadmap
- .gitignore: excludes secrets, build artifacts, node_modules, media uploads

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/Dockerfile

@@ -0,0 +1,21 @@
+# --- Build stage ---
+FROM node:22-alpine AS builder
+
+WORKDIR /app
+COPY package.json package-lock.json ./
+RUN npm ci
+
+COPY . .
+RUN npm run build
+
+# --- Runtime stage ---
+FROM node:22-alpine
+
+WORKDIR /app
+COPY --from=builder /app/build ./build
+COPY --from=builder /app/package.json ./
+RUN npm install --omit=dev
+
+EXPOSE 3001
+ENV PORT=3001 HOST=0.0.0.0
+CMD ["node", "build"]