chore: add Dockerfile and nginx config for Coolify

.dockerignore

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+.git
+.gitignore
+.github
+.claude
+.kilocode
+.vscode
+.idea
+.DS_Store
+
+node_modules
+dist
+tsconfig.tsbuildinfo
+
+.env
+.env.*
+!.env.example
+
+npm-debug.log*
+yarn-debug.log*
+pnpm-debug.log*
+
+Dockerfile
+.dockerignore
+netlify.toml
+README.md
+doc
+MIGRATION_BACKUP.md
+MIGRATION_COMPLETE.md

Dockerfile

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+# syntax=docker/dockerfile:1.7
+
+FROM node:24-alpine AS build
+WORKDIR /app
+
+RUN corepack enable
+
+COPY package.json pnpm-lock.yaml pnpm-workspace.yaml ./
+RUN pnpm install --frozen-lockfile
+
+COPY . .
+RUN pnpm run build
+
+
+FROM nginx:1.27-alpine AS runtime
+
+RUN rm /etc/nginx/conf.d/default.conf
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+COPY --from=build /app/dist /usr/share/nginx/html
+
+EXPOSE 80
+
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+  CMD wget -qO- http://127.0.0.1/healthz || exit 1
+
+CMD ["nginx", "-g", "daemon off;"]

nginx.conf

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+server {
+    listen 80 default_server;
+    listen [::]:80 default_server;
+
+    server_name _;
+    root /usr/share/nginx/html;
+    index index.html;
+
+    # Gzip
+    gzip on;
+    gzip_vary on;
+    gzip_min_length 1024;
+    gzip_proxied any;
+    gzip_comp_level 6;
+    gzip_types
+        text/plain
+        text/css
+        text/xml
+        text/javascript
+        application/javascript
+        application/json
+        application/xml
+        application/xml+rss
+        application/manifest+json
+        image/svg+xml;
+
+    # Security headers
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header X-Frame-Options "SAMEORIGIN" always;
+    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
+
+    # Healthcheck endpoint for Coolify / Docker
+    location = /healthz {
+        access_log off;
+        add_header Content-Type text/plain;
+        return 200 "ok\n";
+    }
+
+    # Service worker must never be cached (PWA updates rely on this)
+    location = /sw.js {
+        add_header Cache-Control "no-cache, no-store, must-revalidate";
+        add_header Pragma "no-cache";
+        expires 0;
+        try_files $uri =404;
+    }
+
+    location = /registerSW.js {
+        add_header Cache-Control "no-cache, no-store, must-revalidate";
+        expires 0;
+        try_files $uri =404;
+    }
+
+    location = /manifest.webmanifest {
+        add_header Cache-Control "no-cache";
+        types { } default_type "application/manifest+json";
+        try_files $uri =404;
+    }
+
+    # Hashed build assets — safe to cache for a year
+    location /assets/ {
+        access_log off;
+        add_header Cache-Control "public, max-age=31536000, immutable";
+        try_files $uri =404;
+    }
+
+    # Static images / icons — moderate cache
+    location ~* \.(?:png|jpg|jpeg|gif|ico|svg|webp|avif|woff2?)$ {
+        access_log off;
+        add_header Cache-Control "public, max-age=604800";
+        try_files $uri =404;
+    }
+
+    # SPA fallback — every other route serves index.html (uncached)
+    location / {
+        add_header Cache-Control "no-cache";
+        try_files $uri $uri/ /index.html;
+    }
+}