feat(adaptive): 完善自适应 RPM 学习并将 Pool 调度状态与健康分解耦

- orchestration 新增 AdaptiveSuccess 效果，在成功回报路径上根据利用率窗口扩张 learned_rpm_limit
- 429 路径改用 429_observation/adjustment 记录以及基于历史的置信度评估，新增 last_rpm_peak 边界字段
- Pool 调度状态不再因 health_score 低或熔断而降级/拦截，前端同步移除相关按钮与文案兜底
- 新增前端 poolTrace 工具（附测试）承接原 HorizontalRequestTimeline 内的候选合并逻辑

apps/aether-gateway/src/handlers/admin/provider/pool_admin/payloads.rs

@@ -672,8 +672,6 @@ fn admin_pool_scheduling_payload(
     key: &StoredProviderCatalogKey,
     cooldown_reason: Option<&str>,
     cooldown_ttl_seconds: Option<u64>,
-    health_score: f64,
-    circuit_breaker_open: bool,
     account_blocked: bool,
     account_status_code: Option<&str>,
     account_status_label: Option<&str>,
@@ -741,36 +739,6 @@ fn admin_pool_scheduling_payload(
             })],
         );
     }
-    if circuit_breaker_open {
-        return (
-            "degraded".to_string(),
-            "circuit_breaker".to_string(),
-            "熔断中".to_string(),
-            vec![json!({
-                "code": "circuit_breaker",
-                "label": "熔断中",
-                "blocking": true,
-                "source": "health",
-                "ttl_seconds": serde_json::Value::Null,
-                "detail": serde_json::Value::Null,
-            })],
-        );
-    }
-    if health_score < 0.5 {
-        return (
-            "degraded".to_string(),
-            "health_low".to_string(),
-            "健康度较低".to_string(),
-            vec![json!({
-                "code": "health_low",
-                "label": "健康度较低",
-                "blocking": false,
-                "source": "health",
-                "ttl_seconds": serde_json::Value::Null,
-                "detail": serde_json::Value::Null,
-            })],
-        );
-    }
     (
         "available".to_string(),
         "available".to_string(),
@@ -857,8 +825,6 @@ pub(super) fn build_admin_pool_key_payload(
             key,
             cooldown_reason.as_deref(),
             cooldown_ttl_seconds,
-            health_score,
-            circuit_breaker_open,
             account_status_blocked,
             account_status_code.as_deref(),
             account_status_label.as_deref(),

apps/aether-gateway/src/handlers/admin/request/system/adaptive.rs

@@ -139,6 +139,9 @@ impl<'a> AdminAppState<'a> {
         key.last_429_at_unix_secs = None;
         key.last_429_type = None;
         key.adjustment_history = None;
+        key.utilization_samples = None;
+        key.last_probe_increase_at_unix_secs = None;
+        key.last_rpm_peak = None;
         let Some(updated) = self.update_provider_catalog_key(&key).await? else {
             return Ok(admin_adaptive_key_not_found_response(key_id));
         };