feat(wails): set sfxkeeb branding and keycap app icon

Regenerate platform build assets from config.yml so the app shows as
sfxkeeb in dock, about, and installers. Replace the default Wails icon
with the keycap/speaker artwork and rebuild macOS Assets.car.

Co-authored-by: Cursor <cursoragent@cursor.com>

build/windows/nsis/wails_tools.nsh

@@ -8,16 +8,16 @@
     !define INFO_PROJECTNAME "sfxkeeb"
 !endif
 !ifndef INFO_COMPANYNAME
-    !define INFO_COMPANYNAME "My Company"
+    !define INFO_COMPANYNAME "sfxkeeb"
 !endif
 !ifndef INFO_PRODUCTNAME
-    !define INFO_PRODUCTNAME "My Product"
+    !define INFO_PRODUCTNAME "sfxkeeb"
 !endif
 !ifndef INFO_PRODUCTVERSION
     !define INFO_PRODUCTVERSION "0.1.0"
 !endif
 !ifndef INFO_COPYRIGHT
-    !define INFO_COPYRIGHT "© 2026, My Company"
+    !define INFO_COPYRIGHT "(c) 2026, sfxkeeb"
 !endif
 !ifndef PRODUCT_EXECUTABLE
     !define PRODUCT_EXECUTABLE "${INFO_PROJECTNAME}.exe"