feat: add admin user initialization endpoint with request handling

apps/frontend/app/generated/api-client/api-client.ts

@@ -1,5 +1,6 @@
 export namespace Schemas {
   // <Schemas>
+  export type AdminInitRequest = { password: string; setup_secret: string; username: string };
   export type HealthInfo = {
     errors?: (Array<string> | null) | undefined;
     status: string;
@@ -14,6 +15,15 @@ export namespace Schemas {
 export namespace Endpoints {
   // <Endpoints>
 
+  export type post_Init_admin = {
+    method: "POST";
+    path: "/api/auth/init_admin";
+    requestFormat: "json";
+    parameters: {
+      body: Schemas.AdminInitRequest;
+    };
+    responses: { 200: unknown; 400: unknown; 401: unknown; 500: unknown };
+  };
   export type post_Login = {
     method: "POST";
     path: "/api/auth/login";
@@ -37,6 +47,7 @@ export namespace Endpoints {
 // <EndpointByMethod>
 export type EndpointByMethod = {
   post: {
+    "/api/auth/init_admin": Endpoints.post_Init_admin;
     "/api/auth/login": Endpoints.post_Login;
   };
   get: {