Add global httpx.ReadTimeout handler for all tests

Move the network timeout skip handler to the main tests/conftest.py
so it applies to all tests, not just tests/test_memory/*.

Fixes flaky CI failures when HuggingFace model downloads timeout.

tests/conftest.py

@@ -14,6 +14,41 @@ from unittest.mock import Mock
 
 import pytest
 
+# Import httpx for timeout handling (will be available since it's a dependency)
+try:
+    import httpx
+
+    HTTPX_AVAILABLE = True
+except ImportError:
+    HTTPX_AVAILABLE = False
+
+
+# =============================================================================
+# Global test hooks
+# =============================================================================
+
+
+@pytest.hookimpl(hookwrapper=True)
+def pytest_runtest_call(item):
+    """Wrap test execution to catch httpx.ReadTimeout and skip instead of fail.
+
+    This handles flaky network timeouts that occur when:
+    - HuggingFace Hub is slow during model downloads (sentence-transformers)
+    - External embedding APIs timeout
+    - Network connectivity issues in CI
+    """
+    outcome = yield
+
+    if HTTPX_AVAILABLE and outcome.excinfo is not None:
+        exc_type, exc_value, exc_tb = outcome.excinfo
+        if isinstance(exc_value, httpx.ReadTimeout):
+            pytest.skip("Skipped due to network timeout (flaky CI)")
+
+
+# =============================================================================
+# Sample messages fixtures
+# =============================================================================
+
 
 # Sample messages fixtures
 @pytest.fixture