Guard CONTRIBUTING architecture inventory completeness

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

Author: cursoragent

CONTRIBUTING.md

@@ -90,7 +90,8 @@ This runs lint, format checks, compile checks, tests, and package build.
   - `tests/test_plain_type_guard_usage.py` (`str`/`int` guardrail enforcement via plain-type checks),
   - `tests/test_type_utils_usage.py` (type `__mro__` boundary centralization in `hyperbrowser/type_utils.py`),
   - `tests/test_polling_loop_usage.py` (`while True` polling-loop centralization in `hyperbrowser/client/polling.py`),
-  - `tests/test_core_type_helper_usage.py` (core transport/config/header/file/polling/session/error/parsing module enforcement of shared plain-type helper usage).
+  - `tests/test_core_type_helper_usage.py` (core transport/config/header/file/polling/session/error/parsing module enforcement of shared plain-type helper usage),
+  - `tests/test_contributing_architecture_guard_listing.py` (`CONTRIBUTING.md` architecture-guard inventory completeness enforcement).
 
 ## Code quality conventions
 

tests/test_architecture_marker_usage.py

@@ -20,6 +20,7 @@
     "tests/test_type_utils_usage.py",
     "tests/test_polling_loop_usage.py",
     "tests/test_core_type_helper_usage.py",
+    "tests/test_contributing_architecture_guard_listing.py",
 )
 
 

tests/test_contributing_architecture_guard_listing.py

@@ -0,0 +1,19 @@
+from pathlib import Path
+
+import pytest
+
+pytestmark = pytest.mark.architecture
+
+
+def test_contributing_lists_all_architecture_guard_modules():
+    contributing_text = Path("CONTRIBUTING.md").read_text(encoding="utf-8")
+    architecture_modules: list[str] = []
+    for module_path in sorted(Path("tests").glob("test_*.py")):
+        module_text = module_path.read_text(encoding="utf-8")
+        if "pytestmark = pytest.mark.architecture" not in module_text:
+            continue
+        architecture_modules.append(module_path.as_posix())
+
+    assert architecture_modules != []
+    for module_path in architecture_modules:
+        assert module_path in contributing_text