fix(ctxmenu): repair library rendering and complete unified row menu

- library.html: remove leftover syntax error + orphan </template></div> that
  broke libraryPage() (page showed 'undefined' and no files), call the correct
  fdCtx.openMenu and use self instead of a throwaway libraryPage() instance
- _ctx_menu.html: full conventional menu with shortcuts, tags + colour picker,
  edit-icon picker; closes on outside click and Escape
- local_workspace.html: migrate onContextMenu to the shared fdCtx store with
  complete handlers; drop legacy window._ctxMenuData DOM hacks
- dashboard.py: expose page_icon + favorited in the workspace tree

app/routers/dashboard.py

@@ -992,16 +992,17 @@ async def local_workspace_tree(request: Request, folder: int = None):
     ws_id = ws["id"] if ws else None
     if not ws_id:
         return {"tree": [], "breadcrumb": []}
+    uid = _get_user_id(request)
 
     with get_conn() as conn:
         if folder:
             # Show only this folder's children + build breadcrumb
-            children = _build_tree_children(conn, folder, ws_id)
+            children = _build_tree_children(conn, folder, ws_id, uid)
             breadcrumb = _build_breadcrumb(conn, folder)
             return {"tree": children, "breadcrumb": breadcrumb, "current_folder": folder}
         else:
             # Full tree from root
-            roots = _build_tree_children(conn, None, ws_id)
+            roots = _build_tree_children(conn, None, ws_id, uid)
             return {"tree": roots, "breadcrumb": [], "current_folder": None}
 
 
@@ -1028,11 +1029,11 @@ async def local_workspace_breadcrumb(request: Request, folder: int):
     return {"breadcrumb": breadcrumb}
 
 
-def _build_tree_children(conn, parent_id: int | None, ws_id: int) -> list:
+def _build_tree_children(conn, parent_id: int | None, ws_id: int, uid: int | None = None) -> list:
     """Recursively build the tree of children for a node."""
     if parent_id is None:
         rows = conn.execute(
-            "SELECT id, title, parent_section, content_format, content, "
+            "SELECT id, title, parent_section, content_format, content, page_icon, "
             "(is_shared OR share_mode != 'private' OR COALESCE(published,0)) as is_shared, "
             "created_at, updated_at FROM pages "
             "WHERE parent_id IS NULL AND workspace_id=? AND deleted_at IS NULL "
@@ -1041,7 +1042,7 @@ def _build_tree_children(conn, parent_id: int | None, ws_id: int) -> list:
         ).fetchall()
     else:
         rows = conn.execute(
-            "SELECT id, title, parent_section, content_format, content, "
+            "SELECT id, title, parent_section, content_format, content, page_icon, "
             "(is_shared OR share_mode != 'private' OR COALESCE(published,0)) as is_shared, "
             "created_at, updated_at FROM pages "
             "WHERE parent_id=? AND workspace_id=? AND deleted_at IS NULL "
@@ -1059,6 +1060,7 @@ def _build_tree_children(conn, parent_id: int | None, ws_id: int) -> list:
     # Collect all page IDs to fetch tags in one query
     all_ids = [r["id"] for r in rows]
     tags_map = {}
+    favorited_ids = set()
     if all_ids:
         placeholders = ",".join("?" for _ in all_ids)
         tag_rows = conn.execute(
@@ -1070,11 +1072,17 @@ def _build_tree_children(conn, parent_id: int | None, ws_id: int) -> list:
             tags_map.setdefault(tr["page_id"], []).append({
                 "id": tr["id"], "name": tr["name"], "color": tr["color"],
             })
+        if uid is not None:
+            fav_rows = conn.execute(
+                f"SELECT page_id FROM favorites WHERE user_id=? AND page_id IN ({placeholders})",
+                [uid, *all_ids],
+            ).fetchall()
+            favorited_ids = {fr["page_id"] for fr in fav_rows}
 
     tree = []
     for r in rows:
         is_folder = r["parent_section"] == "Workspace"
-        children = _build_tree_children(conn, r["id"], ws_id)
+        children = _build_tree_children(conn, r["id"], ws_id, uid)
 
         # Compute size
         size = 0
@@ -1094,6 +1102,7 @@ def _build_tree_children(conn, parent_id: int | None, ws_id: int) -> list:
             "type": "folder" if is_folder else "page",
             "is_folder": is_folder,
             "content_format": r["content_format"] if not is_folder else None,
+            "page_icon": r["page_icon"] or "",
             "children": children,
             "has_children": len(children) > 0,
             "child_count": len(children),
@@ -1104,6 +1113,7 @@ def _build_tree_children(conn, parent_id: int | None, ws_id: int) -> list:
             "author": author,
             "tags": tags_map.get(r["id"], []),
             "is_shared": bool(r["is_shared"]),
+            "favorited": r["id"] in favorited_ids,
         })
     return tree