Marketing Hub: RBAC, i18n (AR/EN), tasks overhaul, team/user merge, tutorial

Features:
- Full RBAC with 3 roles (superadmin/manager/contributor)
- Ownership tracking on posts, tasks, campaigns, projects
- Task system: assign to anyone, filter combobox, visibility scoping
- Team members merged into users table (single source of truth)
- Post thumbnails on kanban cards from attachments
- Publication link validation before publishing
- Interactive onboarding tutorial with Settings restart
- Full Arabic/English i18n with RTL layout support
- Language toggle in sidebar, IBM Plex Sans Arabic font
- Brand-based visibility filtering for non-superadmins
- Manager can only create contributors
- Profile completion flow for new users
- Cookie-based sessions (express-session + SQLite)

server/node_modules/node-gyp/test/fixtures/test-charmap.py

@@ -0,0 +1,31 @@
+import sys
+import locale
+
+try:
+    reload(sys)
+except NameError:  # Python 3
+    pass
+
+
+def main():
+    encoding = locale.getdefaultlocale()[1]
+    if not encoding:
+        return False
+
+    try:
+        sys.setdefaultencoding(encoding)
+    except AttributeError:  # Python 3
+        pass
+
+    textmap = {
+        "cp936": "\u4e2d\u6587",
+        "cp1252": "Lat\u012Bna",
+        "cp932": "\u306b\u307b\u3093\u3054",
+    }
+    if encoding in textmap:
+        print(textmap[encoding])
+    return True
+
+
+if __name__ == "__main__":
+    print(main())