fix: update analytics UI to show TradingView indicator versions correctly

- Changed section title: 'Signal Quality Logic Versions' → 'TradingView Indicator Versions'
- Updated current version marker: v3 → v6
- Added version sorting: v6 first, then v5, then unknown
- Updated description to reflect indicator strategy comparison

Context:
- User clarified: V4 display = v6 data, V1 display = v5 data
- Dashboard now shows indicator versions in proper order
- 154 unknown (pre-tracking), 15 v6 (HalfTrend), 4 v5 (Buy/Sell)

app/analytics/page.tsx

@@ -277,19 +277,18 @@ export default function AnalyticsPage() {
           </div>
         )}
 
-        {/* Signal Quality Version Comparison */}
+        {/* Indicator Version Comparison */}
         {versionComparison && versionComparison.versions.length > 0 && (
           <div className="mb-8">
-            <h2 className="text-xl font-bold text-white mb-4">🔬 Signal Quality Logic Versions</h2>
+            <h2 className="text-xl font-bold text-white mb-4"><EFBFBD> TradingView Indicator Versions</h2>
             <div className="bg-gray-800/50 backdrop-blur-sm rounded-xl p-6 border border-gray-700">
               <p className="text-gray-300 text-sm mb-6 leading-relaxed">
-                The bot has evolved through different signal quality scoring algorithms. 
-                This section compares their performance to enable data-driven optimization.
+                Comparing performance across different TradingView indicator strategies to optimize signal quality.
               </p>
 
               <div className="space-y-4">
                 {versionComparison.versions.map((version, idx) => {
-                  const isCurrentVersion = version.version === 'v3'
+                  const isCurrentVersion = version.version === 'v6'
                   return (
                     <div 
                       key={version.version}