feat: show version in nav

api/src/app/routes/version/index.ts

@@ -0,0 +1,30 @@
+import type { FastifyInstance } from "fastify";
+import { readFileSync } from "fs";
+import { join } from "path";
+
+interface PackageJson {
+  version: string;
+}
+
+let cachedVersion: string | null = null;
+
+function getVersion(): string {
+  if (cachedVersion) {
+    return cachedVersion;
+  }
+
+  try {
+    const packageJsonPath = join(process.cwd(), "package.json");
+    const packageJson = JSON.parse(readFileSync(packageJsonPath, "utf-8")) as PackageJson;
+    cachedVersion = packageJson.version;
+    return cachedVersion;
+  } catch {
+    return "unknown";
+  }
+}
+
+export default async function (app: FastifyInstance): Promise<void> {
+  app.get("/", async (_request, reply) => {
+    reply.send({ version: getVersion() });
+  });
+}