feat(pool): 增加 OAuth 账号池管理功能

- 新增 pool manager / strategy / health_policy / cost_tracker / redis_ops 等核心模块
- 新增 pool admin API 路由与 schemas
- 新增 OAuth 账号类型解析 (oauth_plan)
- 前端增加 PoolManagement 页面、PoolConfigDialog、PoolImportDialog、PoolStatusCard 组件
- 补充 pool config / cost tracker / health policy / manager / strategy / trace 等测试

tests/services/test_pool_config.py

@@ -0,0 +1,106 @@
+"""Tests for pool_config.py — configuration parsing and defaults."""
+
+from __future__ import annotations
+
+from src.services.provider.pool.config import (
+    PoolConfig,
+    UnschedulableRule,
+    parse_pool_config,
+)
+
+
+def test_parse_pool_config_returns_none_when_no_advanced_section() -> None:
+    assert parse_pool_config({}) is None
+    assert parse_pool_config(None) is None
+    assert parse_pool_config({"other_key": 1}) is None
+
+
+def test_parse_pool_config_returns_defaults_for_empty_advanced() -> None:
+    cfg = parse_pool_config({"pool_advanced": {}})
+    assert cfg is not None
+    assert cfg.sticky_session_ttl_seconds == 3600
+    assert cfg.load_threshold_percent == 80
+    assert cfg.lru_enabled is True
+    assert cfg.cost_window_seconds == 18000
+    assert cfg.cost_limit_per_key_tokens is None
+    assert cfg.cost_soft_threshold_percent == 80
+    assert cfg.rate_limit_cooldown_seconds == 300
+    assert cfg.overload_cooldown_seconds == 30
+    assert cfg.proactive_refresh_seconds == 180
+    assert cfg.health_policy_enabled is True
+    assert cfg.unschedulable_rules == []
+
+
+def test_parse_pool_config_overrides_values() -> None:
+    cfg = parse_pool_config(
+        {
+            "pool_advanced": {
+                "sticky_session_ttl_seconds": 7200,
+                "load_threshold_percent": 90,
+                "lru_enabled": False,
+                "cost_window_seconds": 36000,
+                "cost_limit_per_key_tokens": 100000,
+                "cost_soft_threshold_percent": 70,
+                "rate_limit_cooldown_seconds": 600,
+                "overload_cooldown_seconds": 60,
+                "proactive_refresh_seconds": 300,
+                "health_policy_enabled": False,
+            }
+        }
+    )
+    assert cfg is not None
+    assert cfg.sticky_session_ttl_seconds == 7200
+    assert cfg.load_threshold_percent == 90
+    assert cfg.lru_enabled is False
+    assert cfg.cost_window_seconds == 36000
+    assert cfg.cost_limit_per_key_tokens == 100000
+    assert cfg.cost_soft_threshold_percent == 70
+    assert cfg.rate_limit_cooldown_seconds == 600
+    assert cfg.overload_cooldown_seconds == 60
+    assert cfg.proactive_refresh_seconds == 300
+    assert cfg.health_policy_enabled is False
+
+
+def test_parse_pool_config_parses_unschedulable_rules() -> None:
+    cfg = parse_pool_config(
+        {
+            "pool_advanced": {
+                "unschedulable_rules": [
+                    {"keyword": "rate_limit", "duration_minutes": 10},
+                    {"keyword": "overloaded"},
+                    {"invalid": "entry"},  # should be skipped
+                    "not_a_dict",  # should be skipped
+                ]
+            }
+        }
+    )
+    assert cfg is not None
+    assert len(cfg.unschedulable_rules) == 2
+    assert cfg.unschedulable_rules[0] == UnschedulableRule(
+        keyword="rate_limit", duration_minutes=10
+    )
+    assert cfg.unschedulable_rules[1] == UnschedulableRule(keyword="overloaded", duration_minutes=5)
+
+
+def test_parse_pool_config_handles_invalid_types_gracefully() -> None:
+    # Invalid int values should fall back to defaults
+    cfg = parse_pool_config(
+        {
+            "pool_advanced": {
+                "sticky_session_ttl_seconds": "not_a_number",
+                "cost_limit_per_key_tokens": "bad",
+            }
+        }
+    )
+    assert cfg is not None
+    assert cfg.sticky_session_ttl_seconds == 3600  # default
+    assert cfg.cost_limit_per_key_tokens is None  # default for opt_int
+
+
+def test_pool_config_is_frozen() -> None:
+    cfg = PoolConfig()
+    try:
+        cfg.sticky_session_ttl_seconds = 999  # type: ignore[misc]
+        assert False, "Should have raised FrozenInstanceError"
+    except AttributeError:
+        pass