Enhance branding and release workflows

- Updated README.md to include a reference to branding and releases documentation.
- Modified brand_config.py to support multi-brand packaging, including functions for collecting local release data and merging release manifests.
- Adjusted build_macos.sh to set a default brand if none is specified and updated DMG naming conventions.
- Enhanced create_release.ps1 and create_release.sh scripts to support dry-run functionality and improved artifact handling.
- Added a new template for brand configuration in build/brands/template.jsonc.
- Created comprehensive branding and releases documentation in docs/BRANDING_AND_RELEASES.md.
- Added unit tests for new branding functionalities in test_brand_config.py.

build/scripts/build_macos.sh

@@ -77,13 +77,18 @@ fi
 
 echo "📋 Using configuration: $ENV_FILE"
 
-if [ -n "$BRAND" ]; then
-    eval "$(python3 "$BRAND_HELPER" env --brand "$BRAND")"
-    APP_NAME="$WEBDROP_ASSET_PREFIX"
-    DMG_VOLUME_NAME="$WEBDROP_APP_DISPLAY_NAME"
-    BUNDLE_IDENTIFIER="$WEBDROP_BUNDLE_ID"
-    DIST_DIR="$BUILD_DIR/dist/macos/$WEBDROP_BRAND_ID"
-    TEMP_BUILD="$BUILD_DIR/temp/macos/$WEBDROP_BRAND_ID"
+if [ -z "$BRAND" ]; then
+    BRAND="webdrop_bridge"
+fi
+
+eval "$(python3 "$BRAND_HELPER" env --brand "$BRAND")"
+APP_NAME="$WEBDROP_ASSET_PREFIX"
+DMG_VOLUME_NAME="$WEBDROP_APP_DISPLAY_NAME"
+BUNDLE_IDENTIFIER="$WEBDROP_BUNDLE_ID"
+DIST_DIR="$BUILD_DIR/dist/macos/$WEBDROP_BRAND_ID"
+TEMP_BUILD="$BUILD_DIR/temp/macos/$WEBDROP_BRAND_ID"
+
+if [ -n "$WEBDROP_APP_DISPLAY_NAME" ]; then
     echo "🏷️  Building brand: $WEBDROP_APP_DISPLAY_NAME ($WEBDROP_BRAND_ID)"
 fi
 
@@ -220,7 +225,7 @@ create_dmg() {
     log_info "Creating DMG package..."
     echo ""
 
-    DMG_FILE="$DIST_DIR/${APP_NAME}-${VERSION}.dmg"
+    DMG_FILE="$DIST_DIR/${APP_NAME}-${VERSION}-macos-universal.dmg"
 
     # Remove existing DMG
     if [ -f "$DMG_FILE" ]; then