fix: show expiry-filter sample stats so ops map filter effect is visible

Co-authored-by: Cursor <cursoragent@cursor.com>

web/src/api/client.ts

@@ -229,9 +229,21 @@ export type MovePointsStats = {
   buckets: MoveBucket[];
 };
 
+export type ExpiryFilterMeta = {
+  min_hours_filter: number;
+  raw_sample_count: number;
+  filtered_sample_count: number;
+  raw_hours_min: number | null;
+  raw_hours_max: number | null;
+  filtered_hours_min?: number | null;
+  filtered_hours_max?: number | null;
+};
+
 export type OpsMap = {
   leverage: LeverageStats;
   move_points: MovePointsStats;
+  min_hours?: number;
+  expiry_filter?: ExpiryFilterMeta;
 };
 
 export async function fetchHealth(): Promise<Health> {

web/src/pages/OpsMap.tsx

@@ -88,8 +88,25 @@ export default function OpsMapPage() {
 
   const lev: LeverageStats | undefined = data?.leverage;
   const mov: MovePointsStats | undefined = data?.move_points;
+  const filt = data?.expiry_filter;
   const rangeLabel = range === "day" ? "日" : range === "week" ? "近7日" : "近30日";
 
+  const sampleHint = (() => {
+    if (!filt) return `杠杆样本 ${lev?.sample_count ?? 0}`;
+    const raw = filt.raw_sample_count;
+    const kept = filt.filtered_sample_count;
+    const hMin = filt.raw_hours_min;
+    const hMax = filt.raw_hours_max;
+    const span =
+      hMin != null && hMax != null
+        ? ` · 样本距到期约 ${Math.floor(hMin)}–${Math.ceil(hMax)}h`
+        : "";
+    if (raw === kept) {
+      return `杠杆样本 ${kept}（≥${minHours}h 未减少）${span}`;
+    }
+    return `杠杆样本 ${kept}/${raw}（≥${minHours}h）${span}`;
+  })();
+
   return (
     <div className="layout">
       <div className="brand">比特骆驼行情采集分析</div>
@@ -152,7 +169,7 @@ export default function OpsMapPage() {
               <div className="value" style={{ fontSize: "1.1rem" }}>
                 {lev.start_ymd} → {lev.end_ymd}
               </div>
-              <div className="hint">杠杆样本 {lev.sample_count}</div>
+              <div className="hint">{sampleHint}</div>
             </div>
             <div className="tile">
               <div className="label">达标线</div>