feat: badge emoji partagé (noir & blanc) dans l'arborescence + sidebar «Par moi» inclut is_shared

- board/dashboard: helper _load_shared_sidebar_pages intégrant les pages marquées is_shared directement
- _workspace_tree_macro: badge 👥 N&B sur les fichiers partagés du tree du sidebar
- local_workspace: badge 👥 en noir & blanc
- static/css/app.css: style .page-shared-badge

app/routers/dashboard.py

@@ -208,6 +208,15 @@ def _sidebar_data(request: Request, repos: list[dict], include_workspace: bool =
         except Exception:
             pass
 
+    # Shared / received / published pages for the sidebar (Par moi / Avec moi)
+    shared_made_pages = []
+    shared_received_pages = []
+    published_pages = []
+    shared_pages = []
+    if user and user.get("id"):
+        from app.routers.board import _load_shared_sidebar_pages
+        shared_made_pages, shared_received_pages, published_pages, shared_pages = _load_shared_sidebar_pages(user["id"])
+
     return {
         "workspace_name": ws, "workspace_initial": initial,
         "active_ws_name": active_ws_name,
@@ -221,10 +230,10 @@ def _sidebar_data(request: Request, repos: list[dict], include_workspace: bool =
         "recent_pages": recent_pages,
         "private_pages": private_pages,
         "favorite_pages": [],
-        "shared_pages": [],
-        "shared_made_pages": [],
-        "shared_received_pages": [],
-        "published_pages": [],
+        "shared_pages": shared_pages,
+        "shared_made_pages": shared_made_pages,
+        "shared_received_pages": shared_received_pages,
+        "published_pages": published_pages,
         "user": user,
         "avatar_url": avatar_url,
         "avatar_color": avatar_color,