feat: add /api/v1/health public endpoint

- Add public health routes at /api/v1/health, /api/v1/health/detailed, /api/v1/health/consistency
- Make health functions and response types public
- Public routes bypass auth middleware (unlike protected /api/v1/* routes)

src/api/server.rs

@@ -1,6 +1,7 @@
 use std::time::Duration;
 
-use axum::Router;
+use axum::{Json, Router};
+use serde_json::json;
 use tokio::time::timeout;
 use tower_http::cors::{Any, CorsLayer};
 
@@ -15,6 +16,7 @@ use super::checkin_api;
 use super::docs;
 use super::files;
 use super::health;
+use super::health::{health, health_detailed, health_consistency};
 use super::identities;
 use super::identity_agent_api;
 use super::identity_api;
@@ -134,8 +136,14 @@ pub async fn start_server(host: &str, port: u16) -> anyhow::Result<()> {
         .allow_methods(Any)
         .allow_headers(Any);
 
+    let public_health_routes = Router::new()
+        .route("/api/v1/health", axum::routing::get(health))
+        .route("/api/v1/health/detailed", axum::routing::get(health_detailed))
+        .route("/api/v1/health/consistency", axum::routing::get(health_consistency));
+
     let app = Router::new()
         .merge(auth::auth_routes())
+        .merge(public_health_routes)
         .merge(health::health_routes())
         .merge(docs::doc_routes())
         .merge(protected_routes)