feat(presentation): GET /health endpoint

crates/presentation/src/handlers/health.rs

@@ -0,0 +1,10 @@
+use axum::{extract::State, Json};
+use crate::state::AppState;
+
+pub async fn health_handler(State(s): State<AppState>) -> Json<serde_json::Value> {
+    let db_ok = s.users.list_with_stats().await.is_ok();
+    Json(serde_json::json!({
+        "status": if db_ok { "ok" } else { "degraded" },
+        "db": if db_ok { "connected" } else { "error" },
+    }))
+}

crates/presentation/src/handlers/mod.rs

@@ -1,6 +1,7 @@
 pub mod api_keys;
 pub mod auth;
 pub mod feed;
+pub mod health;
 pub mod notifications;
 pub mod social;
 pub mod thoughts;

crates/presentation/src/routes.rs

@@ -16,6 +16,8 @@ use crate::{handlers::*, state::AppState};
 
 pub fn router(fed_config: &ApFederationConfig) -> Router<AppState> {
     let api_routes = Router::new()
+        // health
+        .route("/health", get(health::health_handler))
         // auth
         .route("/auth/register", post(auth::post_register))
         .route("/auth/login", post(auth::post_login))