feat: add notification bridge from app

Author: itsnebulalol

src/AGENTS.md

@@ -63,6 +63,7 @@ main.rs
 | WebSocket events to UI | `websocket.rs` | `broadcast_event()`, `WebSocketServer` |
 | OTA updates | `app/msgpack.rs` | `download_ota_chunks_task()`, MD5 verification |
 | `media.control.*` routing | `app/hid_mapping.rs` (shared mapping), `iap2_wrapper.rs` (WebSocket source), `app/msgpack.rs` (phone EA source) | Both sources resolve via `method_to_hid_command`. WebSocket path calls `lib_conn.send_hid_command` directly; Phone EA path forwards through `hid_tx` channel — see MEDIA CONTROL / HID below |
+| `notification.show` (UI alerts) | `app/msgpack.rs` (explicit log branch) | Phone-emitted events with `{id, title, body, category, daysUntilExpiry, timestamp}`. Forwarded to WebSocket UI clients via the existing `broadcast_event` fallthrough; the explicit branch only adds logging. Consumed by `nocturne-ui/src/components/common/notifications/NotificationBridge.jsx`. |
 
 ## CONVENTIONS
 

src/app/msgpack.rs

@@ -957,6 +957,14 @@ impl MsgPackProtocolHandler {
                     if let Some(has_lifetime) = data.get("hasLifetime").and_then(|v| v.as_bool()) {
                         info!("Lifetime entitlement updated: {}", has_lifetime);
                     }
+                } else if topic == "notification.show" {
+                    let id = data.get("id").and_then(|v| v.as_str()).unwrap_or("");
+                    let title = data.get("title").and_then(|v| v.as_str()).unwrap_or("");
+                    let category = data.get("category").and_then(|v| v.as_str()).unwrap_or("");
+                    info!(
+                        "Forwarding notification.show to UI: id={} category={} title=\"{}\"",
+                        id, category, title
+                    );
                 } else {
                     info!("Broadcasting event to WebSocket clients: {}", topic);
                 }