ci(gitea): make API health probe DinD-compatible

.github/workflows/ci.yml

@@ -309,9 +309,14 @@ jobs:
           docker compose --env-file .env.example build api
           docker compose --env-file .env.example up -d api
 
+          # In containerized runners (Gitea DinD), 127.0.0.1 of the job
+          # is not the Docker daemon host. Probe the production API from
+          # inside its own container so this barrier works on GitHub and Gitea.
           api_ready=0
           for _ in $(seq 1 30); do
-            if curl -fsS http://127.0.0.1:3101/api/v3/health >/tmp/dhv2-health.json 2>/dev/null; then
+            if docker compose --env-file .env.example exec -T api \
+              node -e 'fetch(`http://127.0.0.1:${process.env.API_PORT}/api/v3/health`).then(async r => { const t = await r.text(); process.stdout.write(t); if (!r.ok) process.exit(1); }).catch(() => process.exit(1))' \
+              >/tmp/dhv2-health.json 2>/dev/null; then
               api_ready=1
               break
             fi