Add /healthz endpoint to frontend and backoffice

Adds a Nitro route handler at /healthz for each Nuxt app,
used by Docker Compose healthchecks to monitor service availability.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: alexandreroman

backoffice/server/routes/healthz.get.ts

@@ -0,0 +1 @@
+export default defineEventHandler(() => ({ status: 'ok' }));

compose.yml

@@ -32,6 +32,12 @@ services:
     build: ./frontend
     ports:
       - "3000:3000"
+    healthcheck:
+      test: ["CMD-SHELL", "curl -sf http://localhost:3000/healthz || exit 1"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
+      start_period: 15s
     depends_on:
       temporal:
         condition: service_healthy
@@ -43,6 +49,12 @@ services:
     build: ./backoffice
     ports:
       - "3001:3001"
+    healthcheck:
+      test: ["CMD-SHELL", "curl -sf http://localhost:3001/healthz || exit 1"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
+      start_period: 15s
     depends_on:
       temporal:
         condition: service_healthy

frontend/server/routes/healthz.get.ts

@@ -0,0 +1 @@
+export default defineEventHandler(() => ({ status: 'ok' }));