fix(console): use v2 desktop downloads (#49931)

Co-authored-by: Brendonovich <14191578+Brendonovich@users.noreply.github.com>

Author: opencode-agent[bot]

packages/console/app/src/routes/download/[channel]/[platform].ts

@@ -31,11 +31,11 @@ export async function GET({ params: { platform, channel } }: APIEvent) {
   const assetName = channel === "stable" ? prodAssetNames[platform] : betaAssetNames[platform]
   if (!assetName) return new Response(null, { status: 404 })
 
-  const latest = await fetch(
-    `https://github.com/anomalyco/${channel === "stable" ? "opencode" : "opencode-beta"}/releases/latest/download/${assetName}`,
-    { redirect: "manual" },
+  const release = await fetch(
+    `https://opencode.ai/update/api/${channel === "stable" ? "latest" : "beta"}/desktop/opencode`,
   )
-  const location = latest.headers.get("location")
+  if (!release.ok) return new Response(null, { status: release.status })
+  const location = getAssetUrl(await release.json(), assetName)
   if (!location) return new Response(null, { status: 502 })
 
   const key = new Request(location)
@@ -62,3 +62,14 @@ function download(resp: Response, platform: string, cache: "HIT" | "MISS") {
 
   return new Response(resp.body, { status: resp.status, statusText: resp.statusText, headers })
 }
+
+function getAssetUrl(input: unknown, assetName: string) {
+  if (!isRecord(input) || !isRecord(input.metadata) || !isRecord(input.metadata.files)) return
+  const asset = input.metadata.files[assetName]
+  if (!isRecord(asset) || typeof asset.url !== "string") return
+  return asset.url
+}
+
+function isRecord(input: unknown): input is Record<string, unknown> {
+  return typeof input === "object" && input !== null && !Array.isArray(input)
+}