style: normalize merged state tests

tests/test_import_invariants.py

@@ -15,6 +15,7 @@ Missing *third-party* optional dependencies (customtkinter, PIL, ...) are
 skipped, not failed: those are legitimately absent in headless environments.
 Broken *internal* references always fail.
 """
+
 from __future__ import annotations
 
 import ast
@@ -130,4 +131,3 @@ def test_antigravity_provider_loads_from_repo() -> None:
 
     assert str(PACKAGE_ROOT.resolve()) in str(pkg_file) or str(PACKAGE_ROOT.resolve()) in str(pkg_file.parent)
     assert str(PACKAGE_ROOT.resolve()) in str(runtime_file)
-

tests/test_state_layer_and_event_driven_quota.py

@@ -1,4 +1,5 @@
 """Comprehensive tests for Task A: State Layer, Event-Driven Quota, Seq-Guards, and OAuth Lifecycle."""
+
 from __future__ import annotations
 
 import time