Update admin theme/layout and refresh README details.

Align the project baseline with the latest admin interface styling and layout structure while documenting setup and usage updates in README.

infra/docker/README.md

@@ -0,0 +1,4 @@
+# Docker notes
+
+`docker-compose.yml` is for local development.
+`docker-compose.test.yml` is for CI-like integration and e2e testing.

infra/docker/docker-compose.staging.yml

@@ -0,0 +1,9 @@
+services:
+  web:
+    image: compton/web:staging
+  api:
+    image: compton/api:staging
+  nginx:
+    image: nginx:stable-alpine
+    volumes:
+      - ../nginx/default.conf:/etc/nginx/conf.d/default.conf:ro

infra/k6/mvp-load-test.js

@@ -0,0 +1,20 @@
+import http from "k6/http";
+import { check, sleep } from "k6";
+
+export const options = {
+  stages: [
+    { duration: "1m", target: 10 },
+    { duration: "3m", target: 50 },
+    { duration: "1m", target: 0 }
+  ],
+  thresholds: {
+    http_req_duration: ["p(95)<300"],
+    http_req_failed: ["rate<0.01"]
+  }
+};
+
+export default function () {
+  const contentList = http.get("http://localhost:8000/api/v1/content/pages");
+  check(contentList, { "content list is 200": (r) => r.status === 200 });
+  sleep(1);
+}

infra/nginx/default.conf

@@ -0,0 +1,18 @@
+server {
+    listen 80;
+
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header X-Frame-Options "DENY" always;
+    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;
+    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
+    add_header Permissions-Policy "camera=(), microphone=(), geolocation=()" always;
+    add_header Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src 'self' https://fonts.gstatic.com; img-src 'self' data:; connect-src 'self'; frame-ancestors 'none'; base-uri 'self'; form-action 'self';" always;
+
+    location /api/ {
+        proxy_pass http://api:8000;
+    }
+
+    location / {
+        proxy_pass http://web:5173;
+    }
+}