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_account_state.py

@@ -0,0 +1,92 @@
+"""Tests for pool account-state resolution helpers."""
+
+from __future__ import annotations
+
+from src.services.provider.pool.account_state import resolve_pool_account_state
+
+
+def test_resolve_from_kiro_banned_metadata() -> None:
+    state = resolve_pool_account_state(
+        provider_type="kiro",
+        upstream_metadata={"kiro": {"is_banned": True, "ban_reason": "account suspended"}},
+        oauth_invalid_reason=None,
+    )
+    assert state.blocked is True
+    assert state.code == "account_banned"
+    assert state.label == "账号封禁"
+    assert state.reason == "account suspended"
+
+
+def test_resolve_from_antigravity_forbidden_metadata() -> None:
+    state = resolve_pool_account_state(
+        provider_type="antigravity",
+        upstream_metadata={"antigravity": {"is_forbidden": True, "forbidden_reason": "403"}},
+        oauth_invalid_reason=None,
+    )
+    assert state.blocked is True
+    assert state.code == "account_forbidden"
+    assert state.label == "访问受限"
+    assert state.reason == "403"
+
+
+def test_resolve_from_structured_oauth_reason() -> None:
+    state = resolve_pool_account_state(
+        provider_type="codex",
+        upstream_metadata=None,
+        oauth_invalid_reason="[ACCOUNT_BLOCK] Google requires verification",
+    )
+    assert state.blocked is True
+    assert state.code == "account_blocked"
+    assert state.label == "账号异常"
+    assert state.reason == "Google requires verification"
+
+
+def test_resolve_from_keyword_oauth_reason() -> None:
+    state = resolve_pool_account_state(
+        provider_type=None,
+        upstream_metadata={},
+        oauth_invalid_reason="organization has been disabled by admin",
+    )
+    assert state.blocked is True
+    assert state.code == "account_blocked"
+    assert state.label == "账号异常"
+
+
+def test_resolve_healthy_state() -> None:
+    state = resolve_pool_account_state(
+        provider_type="codex",
+        upstream_metadata={"codex": {"primary_used_percent": 30}},
+        oauth_invalid_reason="Token expired",
+    )
+    assert state.blocked is False
+    assert state.code is None
+
+
+def test_bare_forbidden_not_treated_as_account_block() -> None:
+    """HTTP 403 'Forbidden' from token refresh should not be misclassified."""
+    state = resolve_pool_account_state(
+        provider_type="codex",
+        upstream_metadata={},
+        oauth_invalid_reason="Forbidden",
+    )
+    assert state.blocked is False
+
+
+def test_kiro_oauth_reason_text_detected_as_block() -> None:
+    state = resolve_pool_account_state(
+        provider_type="kiro",
+        upstream_metadata={},
+        oauth_invalid_reason="账户已封禁: Terms of Service violation",
+    )
+    assert state.blocked is True
+    assert state.code == "account_blocked"
+
+
+def test_antigravity_oauth_reason_text_detected_as_block() -> None:
+    state = resolve_pool_account_state(
+        provider_type="antigravity",
+        upstream_metadata={},
+        oauth_invalid_reason="账户访问被禁止: 403 Forbidden",
+    )
+    assert state.blocked is True
+    assert state.code == "account_blocked"