chore: update roadmap, client dependencies and push notification todo

agent-ops/roadmap/ROADMAP.md

@@ -26,7 +26,7 @@ NomadCode는 Flutter 기반 앱, core 서비스, 공유 계약, agent-operation
   - 요약: Plane/Jira 등 work item provider와 core task 사이의 생성, enqueue, 상태 투영, 결과 발행 계약을 provider-neutral하게 정리했다.
 - [완료] Mattermost Push Plugin Extraction
   - 경로: `agent-ops/roadmap/archive/phase/mattermost-push-plugin-extraction/PHASE.md`
-  - 요약: Flutter 앱에 섞인 Mattermost push notification migration을 `../mattermost-push-plugin` Flutter plugin repo로 분리했다.
+  - 요약: Flutter 앱에 섞인 Mattermost push notification migration을 분리했고, 현재 package 경로는 `../nexo/packages/messaging_flutter`다.
 - [진행중] Workflow Core
   - 경로: `agent-ops/roadmap/phase/workflow-core/PHASE.md`
   - 요약: Roadmap Driven Agent-Ops Automation 스케치를 먼저 구체화한 뒤 실제 e2e 흐름을 기준으로 task lifecycle, retry, timeout, notification event를 안정화한다.

apps/client/pubspec.lock

@@ -211,7 +211,7 @@ packages:
   mattermost_push_plugin:
     dependency: "direct main"
     description:
-      path: "../../../mattermost-push-plugin"
+      path: "../../../nexo/packages/messaging_flutter"
       relative: true
     source: path
     version: "0.0.1"

apps/client/pubspec.yaml

@@ -41,7 +41,7 @@ dependencies:
 
   # Mattermost push plugin
   mattermost_push_plugin:
-    path: ../../../mattermost-push-plugin
+    path: ../../../nexo/packages/messaging_flutter
 
   # proto-socket: shared protocol/transport library (local path)
   proto_socket:

apps/client/push-notification-todo.md

@@ -2,7 +2,8 @@
 
 > [!IMPORTANT]
 > **Host App Integration Standard**
-> As of the `mattermost-push-plugin-extraction` milestone, all native FCM services, Room DB structures, JJWT signature verification, inline reply/dismiss receivers, notification builders, and ACK request handling have been successfully extracted into the local Flutter plugin repository: `../mattermost-push-plugin`.
+> As of the `mattermost-push-plugin-extraction` milestone, all native FCM services, Room DB structures, JJWT signature verification, inline reply/dismiss receivers, notification builders, and ACK request handling have been successfully extracted into the local Flutter plugin package.
+> The package now lives in the `nexo` monorepo at `../nexo/packages/messaging_flutter` while keeping the Dart package name `mattermost_push_plugin` for compatibility.
 >
 > **Do NOT edit native push files directly inside this host app repository (`apps/client/android`).** All native push logic and platform services now reside in and must be maintained within the plugin repository.
 
@@ -74,7 +75,7 @@ When replicating this integration boundary in sibling repositories (`../iop` and
 2. **Local Path Imports**: Ensure `pubspec.yaml` points correctly to the actual sibling workspace dependency paths:
    ```yaml
    mattermost_push_plugin:
-     path: ../../../mattermost-push-plugin
+     path: ../../../nexo/packages/messaging_flutter
    proto_socket:
      path: ../../../proto-socket/dart
    ```