Fix GitHub Actions release permissions

Add contents: write permission to workflow to allow creating releases.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: BizaNator

.github/workflows/build.yml

@@ -6,6 +6,9 @@ on:
       - 'v*'  # Triggers on version tags like v1.0.0
   workflow_dispatch:  # Allow manual trigger
 
+permissions:
+  contents: write
+
 jobs:
   build-windows:
     runs-on: windows-latest