fix: resolve CI failure (imports) — ensure collector submodules accessible for patch() on Python 3.10

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: acailic

tests/test_collector_persistence.py

@@ -11,6 +11,7 @@
 
 import pytest
 
+import collector.persistence  # noqa: F401 — ensure submodule accessible for patch() on Python 3.10
 from agent_debugger_sdk.core.events import EventType, TraceEvent
 from collector.buffer import EventBuffer
 from collector.persistence import (

tests/test_feature_1_why_button.py

@@ -13,6 +13,8 @@
 
 import pytest
 
+import collector.causal_analysis  # noqa: F401 — ensure submodule accessible for patch() on Python 3.10
+
 # =============================================================================
 # Custom Exceptions (module-level as specified)
 # =============================================================================

tests/test_persistence_manager_unit.py

@@ -9,6 +9,7 @@
 
 import pytest
 
+import collector.persistence  # noqa: F401 — ensure submodule accessible for patch() on Python 3.10
 from collector.persistence import DEFAULT_STORAGE_PATH, USER_STORAGE_PATH, PersistenceManager