feat(pool): 号池额度主动探测、封禁自动清除、调度硬优先级与前端重构

- 新增 PoolQuotaProbeScheduler，按 probing_interval_minutes 主动探测静默 Key 额度
- pool_advanced 增加 probing_enabled / auto_remove_banned_keys 配置项
- error_handler 和 quota_service 支持封禁 Key 自动删除及缓存清理
- multi_score 策略从加权混合重构为硬优先级排序，引入 mutex_group 互斥组
- 指纹注入从 handler 层下移至 ClaudeCode envelope 层
- OAuth 批量导入支持 concurrency 并发参数
- 前端号池管理拆分高级设置/账号批量/代理设置为独立组件
- 号池总览接口精简，仅返回已启用调度的 Provider

tests/services/test_error_handler_auto_remove_banned.py

@@ -0,0 +1,65 @@
+from __future__ import annotations
+
+from types import SimpleNamespace
+from typing import Any, cast
+
+from src.services.orchestration.error_handler import ErrorHandlerService
+
+
+class _FakeDB:
+    def __init__(self) -> None:
+        self.deleted: list[object] = []
+        self.commit_count = 0
+
+    def delete(self, obj: object) -> None:
+        self.deleted.append(obj)
+
+    def commit(self) -> None:
+        self.commit_count += 1
+
+
+def _build_key() -> SimpleNamespace:
+    return SimpleNamespace(
+        id="k1",
+        provider_id="p1",
+        name="k1-name",
+        auth_type="oauth",
+        auth_config=None,
+        oauth_invalid_at=None,
+        oauth_invalid_reason=None,
+        is_active=True,
+    )
+
+
+def test_mark_oauth_key_blocked_auto_remove_enabled(monkeypatch: Any) -> None:
+    db = _FakeDB()
+    service = ErrorHandlerService(db=cast(Any, db))
+    key = _build_key()
+    provider = SimpleNamespace(config={"pool_advanced": {"auto_remove_banned_keys": True}})
+
+    monkeypatch.setattr(
+        ErrorHandlerService,
+        "_schedule_auto_cleanup_after_delete",
+        staticmethod(lambda **kwargs: None),
+    )
+
+    service._mark_oauth_key_blocked(cast(Any, key), "req-1", provider=cast(Any, provider))
+
+    assert db.commit_count == 1
+    assert db.deleted == [key]
+    assert key.is_active is False
+    assert str(key.oauth_invalid_reason).startswith("[ACCOUNT_BLOCK] ")
+
+
+def test_mark_oauth_key_blocked_auto_remove_disabled() -> None:
+    db = _FakeDB()
+    service = ErrorHandlerService(db=cast(Any, db))
+    key = _build_key()
+    provider = SimpleNamespace(config={"pool_advanced": {"auto_remove_banned_keys": False}})
+
+    service._mark_oauth_key_blocked(cast(Any, key), "req-1", provider=cast(Any, provider))
+
+    assert db.commit_count == 1
+    assert db.deleted == []
+    assert key.is_active is False
+    assert str(key.oauth_invalid_reason).startswith("[ACCOUNT_BLOCK] ")