Frontend: use github-versions.json for version display (#11281)

* fix(frontend): use github-versions.json for version display

- Update AppVersion type to match new format with slug field
- Switch from versions.json to github-versions.json API
- Simplify version matching by direct slug comparison
- Remove 'Loading versions...' text - show nothing if no version found

* feat(frontend): show tooltip for pinned versions

* fix(api): add github-versions endpoint and fix legacy versions route

frontend/src/lib/data.ts

@@ -10,7 +10,7 @@ export async function fetchCategories() {
 }
 
 export async function fetchVersions() {
-  const response = await fetch(`/ProxmoxVE/api/versions`);
+  const response = await fetch(`/ProxmoxVE/api/github-versions`);
   if (!response.ok) {
     throw new Error(`Failed to fetch versions: ${response.statusText}`);
   }

frontend/src/lib/types.ts

@@ -63,7 +63,14 @@ export type OperatingSystem = {
 };
 
 export type AppVersion = {
-  name: string;
+  slug: string;
+  repo: string;
   version: string;
-  date: Date;
+  pinned: boolean;
+  date: string;
+};
+
+export type GitHubVersionsResponse = {
+  generated: string;
+  versions: AppVersion[];
 };