fix(ui): align contextual documentation with headings

Verified with the coordinated workspace changes by devkit full run
2026-09-08T225814-186389-0000-3e3ed7cd (all seven phases passed).
This shared UI pass does not mark the individual module reviews complete.

tests/test_interface_documentation_contract.py

@@ -92,10 +92,11 @@ class CasesInterfaceDocumentationContractTests(unittest.TestCase):
             REPO_ROOT / "webui/src/features/cases/CaseShareDialog.tsx"
         ).read_text(encoding="utf-8")
 
-        self.assertIn("DocumentationHelpLink", list_page)
+        self.assertIn("titleHelp={<DocumentationHelpLink reference={CASES_DOCUMENTATION} />}", list_page)
+        self.assertNotIn("helpAction=", list_page)
         for component in (
             "ActionBlockerHint",
-            "DocumentationHelpLink",
+            'TextWithHelp as="div" help={<DocumentationHelpLink reference={CASES_DOCUMENTATION} />}',
             "FormField",
             "useUnsavedDraftGuard",
             "QUICK_ACCESS_RESULT_EVENT",
@@ -105,7 +106,7 @@ class CasesInterfaceDocumentationContractTests(unittest.TestCase):
             self.assertIn(component, detail_page)
         for component in (
             "ConfirmDialog",
-            "DocumentationHelpLink",
+            "titleHelp={<DocumentationHelpLink reference={CASES_FIELDS_DOCUMENTATION} />}",
             "ReferenceSelect",
             "useUnsavedDraftGuard",
         ):