feat: ship blog platform admin and deploy stack

backend/src/controllers/health.rs

@@ -0,0 +1,13 @@
+use loco_rs::prelude::*;
+
+#[debug_handler]
+pub async fn healthz() -> Result<Response> {
+    format::json(serde_json::json!({
+        "ok": true,
+        "service": "backend",
+    }))
+}
+
+pub fn routes() -> Routes {
+    Routes::new().add("/healthz", get(healthz))
+}