chore(V2): cleanup quality gate

- ruff: contextlib.suppress al posto di try/except/pass (client_registry, test_env_routing)
- rimozione services/ legacy (residuo da git rm)
- fix integration test fixture: rimosso sys.modules.pop che inquinava module references nei test successivi (test_audit, test_client_init_default_http)

254 test passano. Ruff: clean. Mypy: 68 warning preesistenti dal codice V1 migrato (strict=false).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/cerbero_mcp/__main__.py

@@ -18,7 +18,12 @@ from cerbero_mcp.client_registry import ClientRegistry
 from cerbero_mcp.common.logging import configure_root_logging
 from cerbero_mcp.exchanges import build_client
 from cerbero_mcp.routers import (
-    alpaca, bybit, deribit, hyperliquid, macro, sentiment,
+    alpaca,
+    bybit,
+    deribit,
+    hyperliquid,
+    macro,
+    sentiment,
 )
 from cerbero_mcp.server import build_app
 from cerbero_mcp.settings import Settings

src/cerbero_mcp/client_registry.py

@@ -2,6 +2,7 @@
 from __future__ import annotations
 
 import asyncio
+import contextlib
 from collections import defaultdict
 from collections.abc import Awaitable, Callable
 from typing import Any, Literal
@@ -34,8 +35,6 @@ class ClientRegistry:
             close = getattr(client, "aclose", None)
             if close is None:
                 continue
-            try:
+            with contextlib.suppress(Exception):
                 await close()
-            except Exception:
-                pass
         self._clients.clear()

src/cerbero_mcp/exchanges/bybit/client.py

@@ -3,9 +3,10 @@ from __future__ import annotations
 import asyncio
 from typing import Any
 
+from pybit.unified_trading import HTTP
+
 from cerbero_mcp.common import indicators as ind
 from cerbero_mcp.common import microstructure as micro
-from pybit.unified_trading import HTTP
 
 
 def _f(v: Any) -> float | None:

src/cerbero_mcp/exchanges/macro/fetchers.py

@@ -4,9 +4,14 @@ from datetime import UTC, datetime, timedelta
 from typing import Any
 
 import httpx
-from cerbero_mcp.common.http import async_client
 
-from cerbero_mcp.exchanges.macro.cot import classify_extreme, compute_percentile, parse_disagg_row, parse_tff_row
+from cerbero_mcp.common.http import async_client
+from cerbero_mcp.exchanges.macro.cot import (
+    classify_extreme,
+    compute_percentile,
+    parse_disagg_row,
+    parse_tff_row,
+)
 from cerbero_mcp.exchanges.macro.cot_contracts import (
     ALL_DISAGG_SYMBOLS,
     ALL_TFF_SYMBOLS,