* fix: allow standard text shortcuts in command palette input
Two root causes prevented macOS text shortcuts (Cmd+A, Cmd+Backspace, etc.)
from working in the command palette input:
1. The Tauri native menu only had a View submenu — no Edit menu. On macOS,
app.set_menu() replaces the entire menu bar, so Cmd+A/C/V/X/Z accelerators
were removed. Added standard Edit menu with predefined items.
2. useAppKeyboard globally intercepted Cmd+Backspace (mapped to trash note)
even when a text input was focused. Added an isTextInputFocused guard so
Cmd+Backspace/Delete fall through to native text editing in inputs.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix: close missing }) in useAppKeyboard.test.ts
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
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