Let's try the workflow_dispatch option

.gitea/workflows/build.yaml

@@ -1,11 +1,12 @@
 name: SPT Release Build
 on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 19 * * *' # 7pm UTC/3pm ET, every day
   push:
     branches: [ main ]
   pull_request:
     branches: [ main ]
-  schedule:
-    - cron: '0 19 * * *' # 7pm UTC/3pm ET, every day
 jobs:
   prepare:
     runs-on: ubuntu-latest