Fix CI signing: set CODE_SIGN_STYLE=Manual for Developer ID

Co-Authored-By: Claude Opus 4.6 <[email protected]>

Author: devsemih

.github/workflows/build.yml

@@ -57,6 +57,7 @@ jobs:
             -scheme appjail \
             -configuration Release \
             -derivedDataPath build \
+            CODE_SIGN_STYLE=Manual \
             CODE_SIGN_IDENTITY="Developer ID Application" \
             DEVELOPMENT_TEAM=${{ secrets.APPLE_TEAM_ID }}