feat: add public health endpoint

README.md

@@ -85,6 +85,8 @@ use opens account setup, followed by a short onboarding. Run
 `nix develop -c pnpm account:setup` on the server to obtain the private setup
 code. See [owner login](docs/login.md) for configuration, sessions, and limits.
 
+`GET /health` returns `{"status":"ok"}` without authentication or database access.
+
 ## Requirements and setup
 
 Use Nix, or Node.js `>=22.12.0` with pnpm `11.9.0`. The committed `.npmrc`

src/start.ts

@@ -1,5 +1,12 @@
 import { createCsrfMiddleware, createMiddleware, createStart } from "@tanstack/react-start";
 
+const health = createMiddleware().server(({ request, next }) => {
+  if (request.method === "GET" && new URL(request.url).pathname === "/health") {
+    return Response.json({ status: "ok" }, { headers: { "Cache-Control": "no-store" } });
+  }
+  return next();
+});
+
 const ownerAccess = createMiddleware().server(async ({ request, next }) => {
   const { checkAccess, readAccessConfig } = await import("./features/access/policy.server");
   return checkAccess(request, readAccessConfig()) ?? next();
@@ -23,5 +30,5 @@ const storage = createMiddleware().server(async ({ next }) => {
 });
 
 export const startInstance = createStart(() => ({
-  requestMiddleware: [ownerAccess, csrf, storage, appSession],
+  requestMiddleware: [health, ownerAccess, csrf, storage, appSession],
 }));