fix: paper latest signals use signal-history with strategy filter + layer scores

- V5.1 paper: signal-history?strategy=v51_baseline
- V5.2 paper: signal-history?strategy=v52_8signals
- API now returns factors in signal-history
- Each signal shows layer score badges below

backend/main.py

@@ -570,14 +570,21 @@ async def get_signal_history(
     strategy: str = "v52_8signals",
     user: dict = Depends(get_current_user),
 ):
-    """返回最近的信号历史（只返回有信号的记录）"""
+    """返回最近的信号历史（只返回有信号的记录），含各层分数"""
     sym_full = symbol.upper() + "USDT"
     rows = await async_fetch(
-        "SELECT ts, score, signal FROM signal_indicators "
+        "SELECT ts, score, signal, factors FROM signal_indicators "
         "WHERE symbol = $1 AND strategy = $2 AND signal IS NOT NULL "
         "ORDER BY ts DESC LIMIT $3",
         sym_full, strategy, limit
     )
+    # factors可能是JSON string
+    for r in rows:
+        if isinstance(r.get("factors"), str):
+            try:
+                r["factors"] = json.loads(r["factors"])
+            except Exception:
+                pass
     return {"symbol": symbol, "count": len(rows), "data": rows}
 
 

frontend/app/paper-v52/page.tsx

@@ -166,17 +166,19 @@ function LatestSignals() {
   const [signals, setSignals] = useState<Record<string, any>>({});
   useEffect(() => {
     const f = async () => {
+      for (const sym of COINS) {
         try {
-        const r = await authFetch("/api/signals/latest?strategy=v52_8signals");
+          const r = await authFetch(`/api/signals/signal-history?symbol=${sym.replace("USDT","")}&limit=1&strategy=v52_8signals`);
           if (r.ok) {
             const j = await r.json();
-          setSignals(j);
+            if (j.data && j.data.length > 0) {
+              setSignals(prev => ({ ...prev, [sym]: j.data[0] }));
+            }
           }
         } catch {}
+      }
     };
-    f();
-    const iv = setInterval(f, 15000);
-    return () => clearInterval(iv);
+    f(); const iv = setInterval(f, 15000); return () => clearInterval(iv);
   }, []);
 
   return (
@@ -185,11 +187,11 @@ function LatestSignals() {
         <h3 className="font-semibold text-slate-800 text-xs">最新信号</h3>
       </div>
       <div className="divide-y divide-slate-50">
-        {COINS.map((sym) => {
+        {COINS.map(sym => {
+          const s = signals[sym];
           const coin = sym.replace("USDT", "");
-          const s = signals[coin];
           const ago = s?.ts ? Math.round((Date.now() - s.ts) / 60000) : null;
-          const f = s?.factors;
+          const fc = s?.factors;
           return (
             <div key={sym} className="px-3 py-2">
               <div className="flex items-center justify-between">
@@ -201,25 +203,23 @@ function LatestSignals() {
                         {s.signal === "LONG" ? "🟢" : "🔴"} {s.signal}
                       </span>
                       <span className="font-mono text-xs font-bold text-slate-800">{s.score}分</span>
+                      <span className="text-[9px] px-1.5 py-0.5 rounded bg-emerald-50 text-emerald-700 font-medium">{s.score >= 85 ? "加仓" : "标准"}</span>
                     </>
                   ) : (
-                    <>
-                      <span className="text-[10px] text-slate-400">⚪ 无信号</span>
-                      <span className="font-mono text-[10px] text-slate-500">{s?.score ?? 0}分</span>
-                    </>
+                    <span className="text-[10px] text-slate-400">暂无信号</span>
                   )}
                 </div>
                 {ago !== null && <span className="text-[10px] text-slate-400">{ago < 60 ? `${ago}m前` : `${Math.round(ago/60)}h前`}</span>}
               </div>
-              {f && (
+              {fc && (
                 <div className="flex gap-1 mt-1 flex-wrap">
-                  <span className="text-[9px] px-1 py-0.5 rounded bg-blue-50 text-blue-700">方向{f.direction?.score ?? 0}/{f.direction?.max ?? 40}</span>
-                  <span className="text-[9px] px-1 py-0.5 rounded bg-violet-50 text-violet-700">拥挤{f.crowding?.score ?? 0}/{f.crowding?.max ?? 18}</span>
-                  <span className="text-[9px] px-1 py-0.5 rounded bg-cyan-50 text-cyan-700">FR{f.funding_rate?.score ?? 0}/{f.funding_rate?.max ?? 5}</span>
-                  <span className="text-[9px] px-1 py-0.5 rounded bg-emerald-50 text-emerald-700">环境{f.environment?.score ?? 0}/{f.environment?.max ?? 12}</span>
-                  <span className="text-[9px] px-1 py-0.5 rounded bg-amber-50 text-amber-700">确认{f.confirmation?.score ?? 0}/{f.confirmation?.max ?? 15}</span>
-                  <span className="text-[9px] px-1 py-0.5 rounded bg-orange-50 text-orange-700">清算{f.liquidation?.score ?? 0}/{f.liquidation?.max ?? 5}</span>
-                  <span className="text-[9px] px-1 py-0.5 rounded bg-slate-100 text-slate-600">辅助{f.auxiliary?.score ?? 0}/{f.auxiliary?.max ?? 5}</span>
+                  <span className="text-[9px] px-1 py-0.5 rounded bg-blue-50 text-blue-700">方向{fc.direction?.score ?? 0}/{fc.direction?.max ?? 40}</span>
+                  <span className="text-[9px] px-1 py-0.5 rounded bg-violet-50 text-violet-700">拥挤{fc.crowding?.score ?? 0}/{fc.crowding?.max ?? 18}</span>
+                  <span className="text-[9px] px-1 py-0.5 rounded bg-cyan-50 text-cyan-700">FR{fc.funding_rate?.score ?? 0}/{fc.funding_rate?.max ?? 5}</span>
+                  <span className="text-[9px] px-1 py-0.5 rounded bg-emerald-50 text-emerald-700">环境{fc.environment?.score ?? 0}/{fc.environment?.max ?? 12}</span>
+                  <span className="text-[9px] px-1 py-0.5 rounded bg-amber-50 text-amber-700">确认{fc.confirmation?.score ?? 0}/{fc.confirmation?.max ?? 15}</span>
+                  <span className="text-[9px] px-1 py-0.5 rounded bg-orange-50 text-orange-700">清算{fc.liquidation?.score ?? 0}/{fc.liquidation?.max ?? 5}</span>
+                  <span className="text-[9px] px-1 py-0.5 rounded bg-slate-100 text-slate-600">辅助{fc.auxiliary?.score ?? 0}/{fc.auxiliary?.max ?? 5}</span>
                 </div>
               )}
             </div>

frontend/app/paper/page.tsx

@@ -118,13 +118,17 @@ function LatestSignals() {
   const [signals, setSignals] = useState<Record<string, any>>({});
   useEffect(() => {
     const f = async () => {
+      for (const sym of COINS) {
         try {
-        const r = await authFetch("/api/signals/latest?strategy=v51_baseline");
+          const r = await authFetch(`/api/signals/signal-history?symbol=${sym.replace("USDT","")}&limit=1&strategy=v51_baseline`);
           if (r.ok) {
             const j = await r.json();
-          setSignals(j);
+            if (j.data && j.data.length > 0) {
+              setSignals(prev => ({ ...prev, [sym]: j.data[0] }));
+            }
           }
         } catch {}
+      }
     };
     f(); const iv = setInterval(f, 15000); return () => clearInterval(iv);
   }, []);
@@ -136,10 +140,10 @@ function LatestSignals() {
       </div>
       <div className="divide-y divide-slate-50">
         {COINS.map(sym => {
+          const s = signals[sym];
           const coin = sym.replace("USDT", "");
-          const s = signals[coin];
           const ago = s?.ts ? Math.round((Date.now() - s.ts) / 60000) : null;
-          const f = s?.factors;
+          const fc = s?.factors;
           return (
             <div key={sym} className="px-3 py-2">
               <div className="flex items-center justify-between">
@@ -151,23 +155,21 @@ function LatestSignals() {
                         {s.signal === "LONG" ? "🟢" : "🔴"} {s.signal}
                       </span>
                       <span className="font-mono text-xs font-bold text-slate-800">{s.score}分</span>
+                      <span className="text-[9px] px-1.5 py-0.5 rounded bg-emerald-50 text-emerald-700 font-medium">{s.score >= 85 ? "加仓" : "标准"}</span>
                     </>
                   ) : (
-                    <>
-                      <span className="text-[10px] text-slate-400">⚪ 无信号</span>
-                      <span className="font-mono text-[10px] text-slate-500">{s?.score ?? 0}分</span>
-                    </>
+                    <span className="text-[10px] text-slate-400">暂无信号</span>
                   )}
                 </div>
                 {ago !== null && <span className="text-[10px] text-slate-400">{ago < 60 ? `${ago}m前` : `${Math.round(ago/60)}h前`}</span>}
               </div>
-              {f && (
+              {fc && (
                 <div className="flex gap-1 mt-1 flex-wrap">
-                  <span className="text-[9px] px-1 py-0.5 rounded bg-blue-50 text-blue-700">方向{f.direction?.score ?? 0}/{f.direction?.max ?? 45}</span>
-                  <span className="text-[9px] px-1 py-0.5 rounded bg-violet-50 text-violet-700">拥挤{f.crowding?.score ?? 0}/{f.crowding?.max ?? 20}</span>
-                  <span className="text-[9px] px-1 py-0.5 rounded bg-emerald-50 text-emerald-700">环境{f.environment?.score ?? 0}/{f.environment?.max ?? 15}</span>
-                  <span className="text-[9px] px-1 py-0.5 rounded bg-amber-50 text-amber-700">确认{f.confirmation?.score ?? 0}/{f.confirmation?.max ?? 15}</span>
-                  <span className="text-[9px] px-1 py-0.5 rounded bg-slate-100 text-slate-600">辅助{f.auxiliary?.score ?? 0}/{f.auxiliary?.max ?? 5}</span>
+                  <span className="text-[9px] px-1 py-0.5 rounded bg-blue-50 text-blue-700">方向{fc.direction?.score ?? 0}/{fc.direction?.max ?? 45}</span>
+                  <span className="text-[9px] px-1 py-0.5 rounded bg-violet-50 text-violet-700">拥挤{fc.crowding?.score ?? 0}/{fc.crowding?.max ?? 20}</span>
+                  <span className="text-[9px] px-1 py-0.5 rounded bg-emerald-50 text-emerald-700">环境{fc.environment?.score ?? 0}/{fc.environment?.max ?? 15}</span>
+                  <span className="text-[9px] px-1 py-0.5 rounded bg-amber-50 text-amber-700">确认{fc.confirmation?.score ?? 0}/{fc.confirmation?.max ?? 15}</span>
+                  <span className="text-[9px] px-1 py-0.5 rounded bg-slate-100 text-slate-600">辅助{fc.auxiliary?.score ?? 0}/{fc.auxiliary?.max ?? 5}</span>
                 </div>
               )}
             </div>