fix: query backend image tags for latest version instead of helm chart

DO registry API is unreliable for OCI Helm chart tags. Since the CI
pushes images and chart with the same version, use lunarfront-app
image tags which are always indexed correctly.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/services/git.ts

@@ -5,7 +5,8 @@ import { join } from "path";
 import { config } from "../lib/config";
 
 export async function getLatestChartVersion(): Promise<string> {
-  const res = await fetch("https://api.digitalocean.com/v2/registry/lunarfront/repositories/lunarfront/tags?page=1&per_page=100", {
+  // Query backend image tags instead of Helm chart tags — DO API is unreliable for OCI helm artifacts
+  const res = await fetch("https://api.digitalocean.com/v2/registry/lunarfront/repositories/lunarfront-app/tags?page=1&per_page=100", {
     headers: { Authorization: `Bearer ${config.doToken}` },
   });
   const data = await res.json() as { tags: { tag: string }[] };