feat: replace prompt with inform (fire-and-forget), logs default 20 lines

crates/server/src/api.rs

@@ -401,6 +401,22 @@ pub async fn clipboard_set(
     }
 }
 
+/// POST /devices/:label/inform
+pub async fn inform_user(
+    Path(label): Path<String>,
+    State(state): State<AppState>,
+    Json(body): Json<PromptBody>,
+) -> impl IntoResponse {
+    match dispatch(&state, &label, "inform", |rid| ServerMessage::InformRequest {
+        request_id: rid,
+        message: body.message.clone(),
+        title: body.title.clone(),
+    }).await {
+        Ok(_) => (StatusCode::OK, Json(serde_json::json!({ "ok": true }))).into_response(),
+        Err(e) => e.into_response(),
+    }
+}
+
 /// POST /devices/:label/prompt
 #[derive(Deserialize)]
 pub struct PromptBody {