A /health endpoint for the Docker health checks

The health checks of web, seed-api and seed-relay called /api/v1/stats
every 30 s, whose release statistics query kept about a core busy.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

start/routes.ts

@@ -9,12 +9,20 @@
 
 import { middleware } from '#start/kernel'
 import router from '@adonisjs/core/services/router'
+import db from '@adonisjs/lucid/services/db'
 import { controllers } from '#generated/controllers'
 
 const ReleasesController = () => import('#controllers/releases_controller')
 const NewznabController = () => import('#controllers/newznab_controller')
 const SeedController = () => import('#controllers/seed_controller')
 
+// Docker health checks (web, seed-api, seed-relay): the database answers, nothing more. They called
+// /api/v1/stats every 30 s from five containers, and its query kept a core busy (LOG.md 2026-10-07 (5)).
+router.get('/health', async () => {
+  await db.rawQuery('SELECT 1')
+  return { ok: true }
+})
+
 // Newznab API for Prowlarr / Sonarr / Radarr ("Generic Newznab", API path /api).
 router.get('/api', [NewznabController, 'handle'])
 

tests/functional/web_api.spec.ts

@@ -135,3 +135,11 @@ test.group('Web API', (group) => {
     assert.isTrue(row.par2Only)
   })
 })
+
+test.group('Health check', () => {
+  test('/health answers when the database does', async ({ client }) => {
+    const response = await client.get('/health')
+    response.assertStatus(200)
+    response.assertBody({ ok: true })
+  })
+})