fix: resolve 'app-'-prefixed app names in feedback target lookup

APP_NAME_REGEX allows names beginning with "app-" (e.g. the seeded
app-center), but resolveTargetApp's startsWith('app-') heuristic sent
those to a uid-only lookup with no name fallback, so feedback for such
apps 403'd even when enabled. Use AppStore.resolveApp (uid, then name)
like the rest of the codebase.

src/backend/controllers/feedback/AppFeedbackController.test.ts

@@ -84,9 +84,10 @@ const makeUser = async (): Promise<{ actor: Actor; userId: number }> => {
 
 const makeApp = async (
     ownerUserId: number,
-    opts: { feedbackEnabled?: boolean; indexUrl?: string } = {},
+    opts: { feedbackEnabled?: boolean; indexUrl?: string; name?: string } = {},
 ) => {
-    const name = `fdbk-app-${Math.random().toString(36).slice(2, 10)}`;
+    const name =
+        opts.name ?? `fdbk-app-${Math.random().toString(36).slice(2, 10)}`;
     return await server.stores.app.create(
         {
             name,
@@ -251,6 +252,24 @@ describe('AppFeedbackController GET /target', () => {
         });
     });
 
+    it('resolves an opted-in app whose name starts with "app-"', async () => {
+        const { userId: ownerId } = await makeUser();
+        const name = `app-fdbk-${Math.random().toString(36).slice(2, 10)}`;
+        const app = await makeApp(ownerId, { feedbackEnabled: true, name });
+        const { actor } = await makeUser();
+        const { res, captured } = makeRes();
+        await callRoute(
+            'get',
+            '/target',
+            makeReq({ query: { app: name }, actor }),
+            res,
+        );
+        expect(captured.body).toEqual({
+            enabled: true,
+            app: { name: app.name, title: app.title },
+        });
+    });
+
     it('resolves an origin to the app whose index_url it matches', async () => {
         const { userId: ownerId } = await makeUser();
         const app = await makeApp(ownerId, { feedbackEnabled: true });

src/backend/services/feedback/AppFeedbackService.ts

@@ -92,9 +92,9 @@ export class AppFeedbackService extends PuterService {
         origin?: string;
     }): Promise<Record<string, unknown> | null> {
         if (app) {
-            return app.startsWith('app-')
-                ? await this.stores.app.getByUid(app)
-                : await this.stores.app.getByName(app);
+            // Names may legally start with "app-" (e.g. "app-center"), so a
+            // prefix heuristic would misroute them; try uid first, then name.
+            return await this.stores.app.resolveApp(app);
         }
         if (origin) {
             let uid;