perf(pool): 添加性能计时日志，优化批量删除分批与模型解除关联查询

- 前端批量操作对话框添加 loadAllKeys/executeAction 计时日志
- 后端池账号列表接口和批量删除接口添加分阶段耗时日志
- 批量删除按数据库类型自动选择分批大小，统一前端 batch size 为 2000
- 优化 auto_disassociate 查询：先检查 unlimited key 提前返回，使用 load_only 减少字段加载
- 新增批量操作路由和自动解除关联的单元测试

tests/services/test_global_model_auto_disassociate.py

@@ -0,0 +1,93 @@
+from __future__ import annotations
+
+from types import SimpleNamespace
+from unittest.mock import MagicMock
+
+from src.models.database import Model, Provider, ProviderAPIKey
+from src.services.model.global_model import GlobalModelService
+
+
+def test_auto_disassociate_short_circuits_when_unlimited_key_exists() -> None:
+    db = MagicMock()
+    provider_query = MagicMock()
+    provider_query.filter.return_value.first.return_value = SimpleNamespace(name="Provider A")
+
+    unlimited_query = MagicMock()
+    unlimited_query.filter.return_value.limit.return_value.first.return_value = object()
+
+    def _query(*entities: object) -> MagicMock:
+        entity = entities[0]
+        if entity is Provider:
+            return provider_query
+        if entity is ProviderAPIKey.id:
+            return unlimited_query
+        if entity is Model:
+            raise AssertionError("model query should not run when unlimited key exists")
+        raise AssertionError(f"unexpected query: {entities}")
+
+    db.query.side_effect = _query
+
+    result = GlobalModelService.auto_disassociate_provider_by_key_whitelist(db, "provider-1")
+
+    assert result == {"success": [], "errors": []}
+    db.delete.assert_not_called()
+    db.commit.assert_not_called()
+
+
+def test_auto_disassociate_deletes_unmatched_auto_associated_models(
+    monkeypatch,
+) -> None:
+    db = MagicMock()
+    provider_query = MagicMock()
+    provider_query.filter.return_value.first.return_value = SimpleNamespace(name="Provider B")
+
+    unlimited_query = MagicMock()
+    unlimited_query.filter.return_value.limit.return_value.first.return_value = None
+
+    allowed_models_query = MagicMock()
+    allowed_models_query.filter.return_value.all.return_value = [
+        SimpleNamespace(allowed_models=["gpt-4o"]),
+        SimpleNamespace(allowed_models=[]),
+    ]
+
+    model = SimpleNamespace(
+        id="model-1",
+        global_model=SimpleNamespace(
+            id="gm-1",
+            name="claude-sonnet",
+            config={"model_mappings": ["claude-*"]},
+        ),
+    )
+    models_query = MagicMock()
+    models_query.options.return_value.filter.return_value.all.return_value = [model]
+
+    def _query(*entities: object) -> MagicMock:
+        entity = entities[0]
+        if entity is Provider:
+            return provider_query
+        if entity is ProviderAPIKey.id:
+            return unlimited_query
+        if entity is ProviderAPIKey.allowed_models:
+            return allowed_models_query
+        if entity is Model:
+            return models_query
+        raise AssertionError(f"unexpected query: {entities}")
+
+    db.query.side_effect = _query
+    monkeypatch.setattr(
+        "src.core.model_permissions.match_model_with_pattern",
+        lambda pattern, allowed_model: pattern == allowed_model,
+    )
+
+    result = GlobalModelService.auto_disassociate_provider_by_key_whitelist(db, "provider-2")
+
+    assert result["errors"] == []
+    assert result["success"] == [
+        {
+            "model_id": "model-1",
+            "global_model_id": "gm-1",
+            "global_model_name": "claude-sonnet",
+        }
+    ]
+    db.delete.assert_called_once_with(model)
+    db.commit.assert_called_once()