feat: implement Part D and E from FIXPLAN

- D1/D2/D2c: Added TraderTraits entity, TraderTraitCalculator, Market Return Metrics (MedianWin, AvgWin, etc.), and trait filters
- D3: Implemented HF-Trader Tiering via IngestMode (Full, Aggregated, SnapshotOnly) and updated TradeHistoryWorker to respect tiers
- E1-E5: Added MasterStatus to Trader, TraderWindowMetrics for rolling analytics, Fingerprint metrics (PriceBandProfile, P50/P90), Copyability aggregates (Volume, Drift, Edge)
- E6: Implemented GET /api/traders/{id}/profile and GET /api/traders/correlation
- Replaced FIXPLAN-2026-07-09.md with FIXPLAN-TODO.md and FIXPLAN-DONE.md
- Cleaned up API docs and plan to use generic terms (removed hardcoded PolyTrader references)
- Added respective EF Core Migrations

src/Predictalytics.Api/wwwroot/js/app.js

@@ -292,6 +292,11 @@ async function loadTraders() {
         url += `&highlyCopyable=true`;
     }
 
+    const filterTrait = document.getElementById('filterTrait');
+    if (filterTrait && filterTrait.value) {
+        url += `&trait=${encodeURIComponent(filterTrait.value)}`;
+    }
+
     let data = await api(url);
     const tbody = document.getElementById('allTradersBody');
     if (!data || !data.length) { tbody.innerHTML = '<tr><td colspan="11"><div class="empty-state"><p>No traders tracked yet.</p></div></td></tr>'; return; }
@@ -333,7 +338,10 @@ async function loadTraders() {
             <td>${fmt.pct(t.winRate)}</td>
             <td>${fmt.pnl(t.totalPnl)}</td>
             <td>${t.trades30d} | ${t.totalTrades}</td>
-            <td>${t.strategy}</td>
+            <td>
+                ${t.strategy}
+                ${t.traits ? '<div style="display:flex; flex-wrap:wrap; gap:4px; margin-top:4px;">' + t.traits.map(tr => `<span style="font-size:10px; padding:2px 6px; background:var(--bg-input); border-radius:10px;">${tr}</span>`).join('') + '</div>' : ''}
+            </td>
             <td>
                 <div style="display:flex; gap:4px;">
                     <button class="btn-sm" onclick="viewTrader(${t.id})">Details</button>
@@ -451,6 +459,16 @@ async function viewTrader(id) {
     document.getElementById('td-platformId').textContent = t.platformUserId;
     document.getElementById('td-tier').innerHTML = fmt.tier(t.tier);
     document.getElementById('td-strategy').textContent = t.strategy;
+    
+    const traitsContainer = document.getElementById('td-traits-container');
+    const traitsEl = document.getElementById('td-traits');
+    if (t.traits && t.traits.length > 0) {
+        traitsContainer.style.display = 'block';
+        traitsEl.innerHTML = t.traits.map(tr => `<span title="Value: ${Number(tr.value).toFixed(4)}" style="font-size:11px; padding:2px 8px; background:var(--bg-input); border-radius:12px; border:1px solid var(--border);">${tr.trait}</span>`).join('');
+    } else {
+        traitsContainer.style.display = 'none';
+        traitsEl.innerHTML = '';
+    }
     document.getElementById('td-winrate').innerHTML = fmt.pct(t.winRate);
     document.getElementById('td-winrate30d').innerHTML = fmt.pct(t.winRate30d);
     document.getElementById('td-pnl').innerHTML = fmt.pnl(t.totalPnl);
@@ -460,6 +478,15 @@ async function viewTrader(id) {
     document.getElementById('td-score').textContent = Number(t.combinedScore).toFixed(1);
     document.getElementById('td-quality-score').textContent = Number(t.copytradingQualityScore || 0).toFixed(1);
     document.getElementById('td-copyability-score').textContent = Number(t.copytradingCopyabilityScore || 0).toFixed(1);
+    
+    const winRateDec = t.winRate / 100;
+    const medianWin = t.medianWinReturnPct || 0;
+    const medianLoss = t.medianLossReturnPct || 0;
+    const expectancy = (winRateDec * medianWin) - ((1 - winRateDec) * Math.abs(medianLoss));
+    
+    document.getElementById('td-median-win-loss').innerHTML = `<span class="side-buy">+${Number(medianWin).toFixed(1)}%</span> / <span class="side-sell">${Number(medianLoss).toFixed(1)}%</span>`;
+    document.getElementById('td-profit-factor').textContent = t.profitFactor ? Number(t.profitFactor).toFixed(2) : '—';
+    document.getElementById('td-expectancy').innerHTML = expectancy > 0 ? `<span class="side-buy">+${expectancy.toFixed(1)}%</span>` : `<span class="side-sell">${expectancy.toFixed(1)}%</span>`;
     document.getElementById('td-ai-summary').textContent = t.aiStrategySummary || 'Not analyzed yet.';
     
     const syncBtn = document.getElementById('btn-sync-trader');
@@ -722,4 +749,23 @@ async function queueBacklogAnalysis() {
 }
 
 // Initialize Dashboard
-loadDashboard();
+document.addEventListener('DOMContentLoaded', async () => {
+    // Load traits for filter
+    try {
+        const traits = await api('/api/traders/traits');
+        if (traits && Array.isArray(traits)) {
+            const filterTrait = document.getElementById('filterTrait');
+            if (filterTrait) {
+                traits.forEach(t => {
+                    const opt = document.createElement('option');
+                    opt.value = t;
+                    opt.textContent = t;
+                    filterTrait.appendChild(opt);
+                });
+            }
+        }
+    } catch (e) {
+        console.error('Failed to load traits', e);
+    }
+    loadDashboard();
+});