QA Scribe v0.4.22

• Restore reliable image paste in note editors by reading image files from both clipboard files and clipboard items.
• Add a native Tauri clipboard image fallback for WebView paste events that expose image metadata but no DOM File, while keeping normal text and HTML paste behavior untouched.
• Keep the existing attach-image path unchanged and add regression coverage for paste files, item-based paste, native fallback, command mapping, and PNG data URL encoding.