feat: SPA routing, projects/resume sections, deployment infra

- Add client-side router with History API pushState (router.ts, pages.ts)
- Extend overlay with projects grid/category/detail views and resume section
- Add Gitea CI/CD workflow and webhook deployment server
- Improve Docker Compose with nginx reverse proxy config
- Add deployment script and .env.example

Dockerfile

@@ -9,14 +9,26 @@ RUN npm ci
 # Copy source and build
 COPY tsconfig.json vite.config.ts index.html ./
 COPY src/ src/
+
+# Run tests first — gates the build
+RUN npm test
+
 RUN npm run build
 
 # ---- stage 2: serve ----
 FROM nginx:alpine-slim AS serve
+
+# curl needed for the healthcheck in docker-compose
+RUN apk add --no-cache curl
+
 COPY --from=build /app/dist /usr/share/nginx/html
 
-# Optional: custom nginx config for caching / security
-COPY nginx.default.conf /etc/nginx/conf.d/default.conf
+# Wipe any default server blocks that could conflict with our config.
+RUN rm -f /etc/nginx/conf.d/default.conf
 
-EXPOSE 80
+# Deploy our custom nginx config and validate it at build time
+COPY nginx.default.conf /etc/nginx/conf.d/default.conf
+RUN nginx -t
+
+EXPOSE 8080
 CMD ["nginx", "-g", "daemon off;"]