Fix CI: update hardcoded legacy/ path in test_derivation.py

test_derivation.py had its own path to legacy/INTENT.json that was
missed when moving test data to testing/mock/resources/. Also update
stale comments in conftest.py to reflect the new location.

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

Author: pdudotdev

testing/mock/conftest.py

@@ -77,7 +77,7 @@
 _transport_mod.close_device_session = AsyncMock()
 sys.modules["transport"] = _transport_mod
 
-# ── Step 4: Load legacy/INTENT.json as mock intent ────────────────────────────
+# ── Step 4: Load testing/mock/resources/INTENT.json as mock intent ───────────
 _INTENT_JSON = _ROOT / "testing" / "mock" / "resources" / "INTENT.json"
 MOCK_INTENT: dict = json.loads(_INTENT_JSON.read_text())
 
@@ -86,11 +86,11 @@
 
 @pytest.fixture
 def mock_devices() -> dict:
-    """Device inventory from legacy/NETWORK.json."""
+    """Device inventory from testing/mock/resources/NETWORK.json."""
     return dict(MOCK_DEVICES)
 
 
 @pytest.fixture
 def mock_intent() -> dict:
-    """Network intent from legacy/INTENT.json."""
+    """Network intent from testing/mock/resources/INTENT.json."""
     return dict(MOCK_INTENT)

testing/mock/unit/test_derivation.py

@@ -5,7 +5,7 @@
 from validation.assertions import AssertionType
 from validation.derivation import derive_assertions
 
-_INTENT = json.loads((Path(__file__).parent.parent.parent.parent / "legacy" / "INTENT.json").read_text())
+_INTENT = json.loads((Path(__file__).parent.parent / "resources" / "INTENT.json").read_text())
 
 
 def test_derive_total_count():