fix: clear manifest cache between sessions and align PR gate pytest with cron

- Clear _manifest_feature_ids LRU cache in pytest_sessionstart so manifest
  changes between pytest.main() invocations within the same process are
  picked up, preventing silent result drops.
- Add --ignore flags for the internal _*_unit_tests/ subdirectories to the
  Claude Code compat PR gate CircleCI job to match the cron run_daily.sh
  pytest invocation.

Co-authored-by: Yassin Kortam <yassin@berri.ai>

.circleci/config.yml

@@ -2372,6 +2372,10 @@ jobs:
             export LITELLM_PROXY_API_KEY="sk-1234"
             mkdir -p test-results
             uv run --no-sync python -m pytest -vv tests/claude_code/ \
+              --ignore=tests/claude_code/_driver_unit_tests \
+              --ignore=tests/claude_code/_builder_unit_tests \
+              --ignore=tests/claude_code/_publisher_unit_tests \
+              --ignore=tests/claude_code/_pr_gate_unit_tests \
               --junitxml=test-results/junit.xml \
               --durations=10
           no_output_timeout: 30m

tests/claude_code/conftest.py

@@ -450,6 +450,7 @@ def pytest_sessionstart(session):
        the controller while it's wiping the directory.
     """
     _COLLECTOR.items.clear()
+    _manifest_feature_ids.cache_clear()
 
     if _is_xdist_worker(session):
         return