fix: native release needs contents:write permission to upload assets

The build succeeded but softprops/action-gh-release couldn't upload
binaries — 'Resource not accessible by integration'. Added permissions
block.

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

Author: Darth-Hidious

.github/workflows/native-release.yml

@@ -6,6 +6,9 @@ on:
       - "v*"
   workflow_dispatch:
 
+permissions:
+  contents: write
+
 jobs:
   package-native:
     name: Package Native (${{ matrix.label }})