Add file-path display helper architecture guard

Co-authored-by: Shri Sukhani <shrisukhani@users.noreply.github.com>

Author: cursoragent

CONTRIBUTING.md

@@ -133,6 +133,7 @@ This runs lint, format checks, compile checks, tests, and package build.
   - `tests/test_extension_request_internal_reuse.py` (extension request-helper internal reuse of shared model request helpers),
   - `tests/test_extension_route_constants_usage.py` (extension manager route-constant usage enforcement),
   - `tests/test_extract_payload_helper_usage.py` (extract start-payload helper usage enforcement),
+  - `tests/test_file_path_display_helper_usage.py` (shared file-path display helper usage enforcement),
   - `tests/test_guardrail_ast_utils.py` (shared AST guard utility contract),
   - `tests/test_helper_transport_usage_boundary.py` (manager-helper transport usage boundary enforcement through shared model request helpers),
   - `tests/test_job_fetch_helper_boundary.py` (centralization boundary enforcement for retry/paginated-fetch helper primitives),

tests/test_architecture_marker_usage.py

@@ -50,6 +50,7 @@
     "tests/test_model_request_wrapper_internal_reuse.py",
     "tests/test_tool_mapping_reader_usage.py",
     "tests/test_display_helper_usage.py",
+    "tests/test_file_path_display_helper_usage.py",
     "tests/test_binary_file_open_helper_usage.py",
     "tests/test_browser_use_payload_helper_usage.py",
     "tests/test_ci_workflow_quality_gates.py",

tests/test_file_path_display_helper_usage.py

@@ -0,0 +1,18 @@
+from pathlib import Path
+
+import pytest
+
+pytestmark = pytest.mark.architecture
+
+
+FILE_PATH_DISPLAY_MODULES = (
+    "hyperbrowser/client/managers/extension_create_utils.py",
+    "hyperbrowser/client/managers/session_upload_utils.py",
+)
+
+
+def test_file_path_error_messages_use_shared_display_helper():
+    for module_path in FILE_PATH_DISPLAY_MODULES:
+        module_text = Path(module_path).read_text(encoding="utf-8")
+        assert "format_file_path_for_error(" in module_text
+        assert "ord(character) < 32" not in module_text