style(tests): fix ruff lint errors in new snapshot/fallback/retry tests

tests/test_api_surface_snapshot.py

@@ -12,8 +12,6 @@ mcp_production.py and x402.py into sub-packages.
 
 from __future__ import annotations
 
-import pytest
-
 
 class TestMCPPublicSurface:
     """The mcp_production shim must expose the same public API as before."""

tests/test_fallback_integration.py

@@ -90,7 +90,7 @@ class TestRetryWithScraper:
     @pytest.mark.anyio
     async def test_retry_exhausts_and_raises(self, scraper_with_mocks):
         """Retry exhausts attempts and re-raises."""
-        s, mocks = scraper_with_mocks
+        s, _mocks = scraper_with_mocks
 
         async def scrape_or_raise(url: str) -> dict:
             result = await s.scrape(url)
@@ -98,7 +98,7 @@ class TestRetryWithScraper:
                 raise RuntimeError(result.get("error", "scrape failed"))
             return result
 
-        with pytest.raises(RuntimeError, match="scrape failed|_failed|circuit_open"):
+        with pytest.raises(RuntimeError, match=r"scrape failed|_failed|circuit_open"):
             await async_retry(scrape_or_raise, "https://example.com/page", config=BASE_CFG)
 
 
@@ -201,16 +201,16 @@ class TestDomainTierMemoryWithRetry:
     @pytest.mark.anyio
     async def test_domain_memory_used_on_retry(self, fresh_registry, scraper_with_mocks):
         """After domain learns best tier, prefers it."""
-        s, mocks = scraper_with_mocks
+        s, _mocks = scraper_with_mocks
         fresh_registry.record_domain_tier_result("example.com", "archive", success=True, latency=0.1)
         html = _valid_html("archive content")
-        mocks["_tier_archive"].return_value = html
-        mocks["_tier_direct"].return_value = _valid_html("direct")
+        _mocks["_tier_archive"].return_value = html
+        _mocks["_tier_direct"].return_value = _valid_html("direct")
 
         result = await s.scrape("https://example.com/page")
         assert result["status"] == "ok"
-        mocks["_tier_archive"].assert_awaited()
-        mocks["_tier_direct"].assert_not_awaited()
+        _mocks["_tier_archive"].assert_awaited()
+        _mocks["_tier_direct"].assert_not_awaited()
 
 
 class TestGracefulDegradation:

tests/test_retry.py

@@ -5,8 +5,8 @@ from __future__ import annotations
 from unittest.mock import AsyncMock
 
 import pytest
-import resilience
 
+import resilience
 from retry import (
     BackoffStrategy,
     Jitter,

tests/test_ultimate_scraper.py

@@ -1,14 +1,20 @@
+"""Tests for ultimate scraper fallback chain."""
+
 # SPDX-License-Identifier: MIT
 # Copyright (c) 2026 Rug Munch Media LLC
 #
 # Part of Pry — https://git.rugmunch.io/RugMunchMedia/pryscraper
 # Licensed under MIT. See LICENSE.
-"""Tests for ultimate scraper fallback chain."""
+
+from __future__ import annotations
 
 from contextlib import ExitStack
 from unittest.mock import AsyncMock, MagicMock, patch
 
+import pytest
+
 import resilience
+from ultimate_scraper import UltimateScraper
 
 
 def _clear_registry() -> None:
@@ -22,10 +28,6 @@ def _clear_registry() -> None:
         cb.last_failure_at = 0.0
         cb.half_open_attempts = 0
 
-import pytest
-
-from ultimate_scraper import UltimateScraper
-
 
 _TIER_ALL = [
     "_tier_direct", "_tier_tls_fingerprint", "_tier_cloudscraper",
@@ -34,7 +36,6 @@ _TIER_ALL = [
     "_tier_archive", "_tier_google_cache", "_tier_tor",
 ]
 
-
 def test_ultimate_init() -> None:
     s = UltimateScraper()
     assert s is not None