feat: add estate-standard /health endpoint

Dockerfile

@@ -12,6 +12,10 @@ WORKDIR /app
 ENV NODE_ENV=production
 ENV HOSTNAME=0.0.0.0
 ENV PORT=3001
+# ARGs don't cross stage boundaries; redeclare so /health reads real provenance at runtime.
+ARG COMMIT_SHA="" BUILD_TIME=""
+ENV COMMIT_SHA=${COMMIT_SHA}
+ENV BUILD_TIME=${BUILD_TIME}
 
 COPY --from=builder /app/public ./public
 COPY --from=builder /app/.next/standalone ./

docker-compose.yml

@@ -51,7 +51,7 @@ services:
           memory: 128M
 
     healthcheck:
-      test: ['CMD', 'wget', '--quiet', '--tries=1', '--spider', 'http://127.0.0.1:3001/']
+      test: ['CMD', 'wget', '--quiet', '--tries=1', '--spider', 'http://127.0.0.1:3001/health']
       interval: 30s
       timeout: 10s
       retries: 3

package.json

@@ -33,7 +33,7 @@
     "verify": "npx tsc --noEmit && next lint && npm run build && vitest run"
   },
   "dependencies": {
-    "@agentage/observability": "^0.6.1",
+    "@agentage/observability": "^0.8.0",
     "@vercel/otel": "^2.1.3",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",

src/app/health/route.test.ts

@@ -0,0 +1,13 @@
+import { describe, it, expect } from 'vitest';
+import { GET } from './route';
+
+describe('GET /health', () => {
+  it('reports the v1 envelope for diffractwd-web', async () => {
+    const res = await GET();
+    const body = await res.json();
+
+    expect(res.status).toBe(200);
+    expect(body.data.service).toBe('diffractwd-web');
+    expect(body.data.status).toBe('ok');
+  });
+});

src/app/health/route.ts

@@ -0,0 +1,6 @@
+import { healthResponse } from '@agentage/observability/health';
+
+// Never prerender, or commit/buildTime are baked at build instead of read from the
+// running container.
+export const dynamic = 'force-dynamic';
+export const GET = () => healthResponse({ service: 'diffractwd-web' });