Summary

• disable the Tauri drag-drop handler for the desktop window on all platforms so macOS file drops reach the web UI
• keep the macOS menu registration inside setup while restoring manage() before setup to avoid startup panics
• preserve the existing frontend drag-and-drop flow without extra fallback logic

Validation

• cargo check --manifest-path src/apps/desktop/Cargo.toml
• pnpm exec tsc -p src/web-ui/tsconfig.json --noEmit

Fixes #126