Add extension parse usage boundary architecture guard

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

Author: cursoragent

CONTRIBUTING.md

@@ -109,6 +109,7 @@ This runs lint, format checks, compile checks, tests, and package build.
   - `tests/test_examples_syntax.py` (example script syntax guardrail),
   - `tests/test_extension_create_helper_usage.py` (extension create-input normalization helper usage enforcement),
   - `tests/test_extension_operation_metadata_usage.py` (extension manager operation-metadata usage enforcement),
+  - `tests/test_extension_parse_usage_boundary.py` (centralized extension list parse-helper usage boundary enforcement),
   - `tests/test_extension_request_helper_usage.py` (extension manager request-helper usage enforcement),
   - `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_architecture_marker_usage.py

@@ -65,6 +65,7 @@
     "tests/test_extract_payload_helper_usage.py",
     "tests/test_examples_naming_convention.py",
     "tests/test_extension_operation_metadata_usage.py",
+    "tests/test_extension_parse_usage_boundary.py",
     "tests/test_extension_request_helper_usage.py",
     "tests/test_extension_request_internal_reuse.py",
     "tests/test_extension_route_constants_usage.py",

tests/test_extension_parse_usage_boundary.py

@@ -0,0 +1,26 @@
+from pathlib import Path
+
+import pytest
+
+pytestmark = pytest.mark.architecture
+
+
+ALLOWED_PARSE_EXTENSION_LIST_RESPONSE_DATA_MODULES = {
+    "hyperbrowser/client/managers/extension_request_utils.py",
+    "hyperbrowser/client/managers/extension_utils.py",
+}
+
+
+def test_parse_extension_list_response_data_usage_is_centralized():
+    violating_modules: list[str] = []
+    for module_path in sorted(
+        Path("hyperbrowser/client/managers").rglob("*.py")
+    ):
+        module_text = module_path.read_text(encoding="utf-8")
+        if "parse_extension_list_response_data(" not in module_text:
+            continue
+        normalized_path = module_path.as_posix()
+        if normalized_path not in ALLOWED_PARSE_EXTENSION_LIST_RESPONSE_DATA_MODULES:
+            violating_modules.append(normalized_path)
+
+    assert violating_modules == []