feat(pool): 引入多维评分调度策略与账号状态检测

- 新增 multi_score 调度模式，支持 LRU/延迟/健康度/剩余额度多维加权评分
- 新增调度预设维度系统（free_team_first, quota_balanced, recent_refresh, single_account），支持有序对象列表配置格式并兼容旧字符串列表
- 新增 account_state 模块，统一账号封禁/受限检测逻辑，替代分散在 routes 中的判断代码
- 新增 health_cache 模块和 latency 采样（redis_ops.record_latency / batch_get_latency_avgs）
- RequestDispatcher 返回 ttfb_ms，PoolManager.on_request_success 记录延迟样本
- 前端：PoolConfigDialog 替换为 PoolSchedulingDialog，支持预设维度可视化配置；号池管理页增加调度模式标签与账号异常 Badge 显示
- 提取前端 accountBlock 工具函数，ProviderDetailDrawer 复用统一判断
- scheduling_dimensions 增加 account_state 和 latency 维度评估
- 补充 account_state、health_cache、multi_score 策略、preset 维度、redis latency 等测试

tests/services/test_pool_scheduling_dimensions.py

@@ -28,7 +28,7 @@ def _snapshot(**overrides: object) -> PoolSchedulingSnapshot:
 
 def test_default_dimension_registry_contains_core_dimensions() -> None:
     names = list_pool_scheduling_dimensions()
-    assert names == ("manual", "cooldown", "circuit", "cost", "health")
+    assert names == ("account_state", "manual", "cooldown", "circuit", "cost", "latency", "health")
 
 
 def test_summary_available_when_all_dimensions_ok() -> None:
@@ -54,6 +54,37 @@ def test_summary_blocked_when_manual_disabled() -> None:
     assert summary.score < 100.0
 
 
+def test_summary_blocked_when_account_state_blocked() -> None:
+    dimensions = evaluate_pool_scheduling_dimensions(
+        _snapshot(
+            account_blocked=True,
+            account_block_label="账号封禁",
+            account_block_reason="account suspended",
+        )
+    )
+    summary = summarize_pool_scheduling_dimensions(dimensions)
+
+    assert summary.status == "blocked"
+    assert summary.reason == "account_banned"
+    assert summary.candidate_eligible is False
+    assert summary.blocked_count >= 1
+
+
+def test_account_state_takes_priority_over_manual_disabled() -> None:
+    dimensions = evaluate_pool_scheduling_dimensions(
+        _snapshot(
+            is_active=False,
+            account_blocked=True,
+            account_block_label="访问受限",
+            account_block_reason="forbidden",
+        )
+    )
+    summary = summarize_pool_scheduling_dimensions(dimensions)
+
+    assert summary.status == "blocked"
+    assert summary.reason == "account_forbidden"
+
+
 def test_summary_degraded_when_cost_reaches_soft_threshold() -> None:
     dimensions = evaluate_pool_scheduling_dimensions(
         _snapshot(cost_window_usage=8200, cost_limit=10000, cost_soft_threshold_percent=80)
@@ -92,3 +123,11 @@ def test_dimension_result_keeps_degraded_health_details() -> None:
     assert isinstance(health, PoolSchedulingDimensionResult)
     assert health.status == "degraded"
     assert health.detail == "0.65"
+
+
+def test_latency_dimension_degraded_when_latency_high() -> None:
+    dimensions = evaluate_pool_scheduling_dimensions(_snapshot(latency_avg_ms=3200))
+    latency = next((item for item in dimensions if item.code == "latency_high"), None)
+    assert isinstance(latency, PoolSchedulingDimensionResult)
+    assert latency.status == "degraded"
+    assert latency.detail == "3200ms"