ci: build on VPS runner while desktop is offline

Desktop runner (marcusDesktop) is off; runs 4-5 queued indefinitely.
ubuntu-latest label targets the VPS docker runner so releases ship now.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.gitea/workflows/release.yml

@@ -6,10 +6,11 @@ on:
 
 jobs:
   build:
-    # RN/NDK builds starve the 4-core VPS — run on the desktop runner
-    # (marcusDesktop). Jobs queue while the desktop is off and start when it
-    # comes online; switch back to ubuntu-latest to build on the VPS.
-    runs-on: desktop
+    # RN/NDK builds starve the 4-core VPS, so `desktop` (marcusDesktop) is the
+    # preferred runner — but jobs queue while the desktop is off. On
+    # ubuntu-latest the VPS builds immediately; flip back when the desktop is
+    # reliably online.
+    runs-on: ubuntu-latest
     container:
       image: eclipse-temurin:21-jdk
     steps: