test(email): align document identity guards with picker cache

tests/test_active_document_visibility_contract.py

@@ -55,7 +55,7 @@ def test_all_runtime_document_imports_share_one_module_url():
         for path in runtime_files
         for match in re.findall(r"document\.js\?v=([A-Za-z0-9_-]+)", path.read_text(encoding="utf-8"))
     }
-    assert versions == {"20260916docctx2"}
+    assert versions == {"20261028emailpickerfiles2"}
 
 
 def test_server_fallback_is_legacy_only_when_ui_state_is_absent():

tests/test_document_edit_reference_js.py

@@ -42,8 +42,8 @@ def test_document_reference_looks_clickable_and_has_keyboard_focus_feedback():
 
 def test_document_module_has_one_browser_identity_for_restore_and_chat_send():
     """Different query strings create separate JS module selection stores."""
-    assert "/static/js/document.js?v=20260916docctx2" in INDEX
-    assert "./js/document.js?v=20260916docctx2" in APP
+    assert "/static/js/document.js?v=20261028emailpickerfiles2" in INDEX
+    assert "./js/document.js?v=20261028emailpickerfiles2" in APP
     assert "document.js?v=20260913dirtysaveicon1" not in INDEX