feat: add graphql to the five rest-only admin methods

adminLogout, adminSession, adminMeta, fgaGetModel and fgaReset were
rest-only even though each has a GraphQL op on the server -- the SDK
simply carried no query for them. All five now work over both protocols.

adminMeta and fgaGetModel keep their REST unwrap: the gateway nests the
payload under admin_meta / model while the GraphQL ops return the object
directly.

That leaves adminSignup, updateEnv and generateJWTKeys as the only
graphql-only methods; they are the only admin operations with no proto RPC.

Author: lakhansamani

src/admin.ts

@@ -268,17 +268,25 @@ export class AuthorizerAdmin {
   adminLogout = (): Promise<Types.ApiResponse<Types.Response>> =>
     this.dispatch<Types.Response>(
       'AdminLogout',
-      ['rest'],
-      null,
+      ['graphql', 'rest'],
+      {
+        query: 'mutation _admin_logout { _admin_logout { message } }',
+        operationName: '_admin_logout',
+        op: '_admin_logout',
+      },
       { method: 'POST', path: '/v1/admin/logout' },
     );
 
   // adminSession refreshes the admin session cookie. (rest-only in JS.)
   adminSession = (): Promise<Types.ApiResponse<Types.Response>> =>
     this.dispatch<Types.Response>(
       'AdminSession',
-      ['rest'],
-      null,
+      ['graphql', 'rest'],
+      {
+        query: 'query _admin_session { _admin_session { message } }',
+        operationName: '_admin_session',
+        op: '_admin_session',
+      },
       { method: 'GET', path: '/v1/admin/session' },
     );
 
@@ -287,8 +295,14 @@ export class AuthorizerAdmin {
   adminMeta = (): Promise<Types.ApiResponse<Types.AdminMeta>> =>
     this.dispatch<Types.AdminMeta>(
       'AdminMeta',
-      ['rest'],
-      null,
+      ['graphql', 'rest'],
+      {
+        query:
+          'query _admin_meta { _admin_meta { roles default_roles protected_roles is_multi_factor_auth_service_enabled } }',
+        operationName: '_admin_meta',
+        op: '_admin_meta',
+      },
+      // GraphQL returns AdminMeta directly; REST nests it under admin_meta.
       { method: 'GET', path: '/v1/admin/meta', unwrap: 'admin_meta' },
     );
 
@@ -667,8 +681,12 @@ export class AuthorizerAdmin {
   fgaGetModel = (): Promise<Types.ApiResponse<Types.FgaModel>> =>
     this.dispatch<Types.FgaModel>(
       'FgaGetModel',
-      ['rest'],
-      null,
+      ['graphql', 'rest'],
+      {
+        query: 'query _fga_get_model { _fga_get_model { id dsl } }',
+        operationName: '_fga_get_model',
+        op: '_fga_get_model',
+      },
       { method: 'GET', path: '/v1/admin/fga/model', unwrap: 'model' },
     );
 
@@ -790,8 +808,12 @@ export class AuthorizerAdmin {
   fgaReset = (): Promise<Types.ApiResponse<Types.Response>> =>
     this.dispatch<Types.Response>(
       'FgaReset',
-      ['rest'],
-      null,
+      ['graphql', 'rest'],
+      {
+        query: 'mutation _fga_reset { _fga_reset { message } }',
+        operationName: '_fga_reset',
+        op: '_fga_reset',
+      },
       { method: 'POST', path: '/v1/admin/fga/reset' },
     );