* feat: add native zoom support (Cmd+/- and Cmd+0)
Adds keyboard-driven zoom using Tauri's webview setZoom API.
Zoom level persists across restarts via localStorage.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* test: add max boundary clamp test for useZoom
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>