chore(one): log when a native notification is surfaced

Lightweight observability for the notification bridge (content-free — no
title/body logged). Verified the app builds and launches via `tauri dev`
(toolchain installed locally); the sidecar loads Auth+Audit so sys_notification
exists and the inbox path is live.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: os-zhuang

apps/objectos-one/src-tauri/src/commands.rs

@@ -14,6 +14,7 @@ use crate::{config, logger, paths, sidecar};
 /// inbox message arrives while the window is backgrounded.
 #[tauri::command]
 pub fn notify_native(app: AppHandle, title: String, body: String) -> Result<(), String> {
+    logger::log_line("INFO", "native notification surfaced");
     app.notification()
         .builder()
         .title(title)