Improve chart trade overlays and paper fill markers.

De-clutter setup labels (left roles, right prices; hide Entry near Now; S/R in-plot), and draw green/red arrows for paper trade entry and exit on the matching sessions.

frontend/src/pages/TickerDetailPage.tsx

@@ -145,12 +145,21 @@ export default function TickerDetailPage() {
   // Status labels: is there an open paper trade on this ticker, and is it the
   // current top pick (same ranking the dashboard highlights)?
   const openTrades = usePaperTrades('open');
+  // Full history for chart entry/exit arrows (open + closed on this symbol).
+  const paperTradeHistory = usePaperTrades();
   const allTrades = useTrades();
   const activation = useActivation();
   const hasOpenTrade = useMemo(
     () => (openTrades.data ?? []).some((t) => t.symbol.toUpperCase() === symbol.toUpperCase()),
     [openTrades.data, symbol],
   );
+  const symbolPaperTrades = useMemo(
+    () =>
+      (paperTradeHistory.data ?? []).filter(
+        (t) => t.symbol.toUpperCase() === symbol.toUpperCase(),
+      ),
+    [paperTradeHistory.data, symbol],
+  );
   const isTopPick = useMemo(
     () => topPickSymbol(allTrades.data, activation.data)?.toUpperCase() === symbol.toUpperCase(),
     [allTrades.data, activation.data, symbol],
@@ -456,11 +465,20 @@ export default function TickerDetailPage() {
               onShowGateTrafficChange={setShowGateTraffic}
               tradeSetup={overlayWithTarget}
               currentPrice={priceInfo?.price}
+              paperTrades={symbolPaperTrades}
             />
             <p className="mt-2 text-[11px] text-gray-500">
               Only the nearest support &amp; resistance are drawn. Full list in the S/R Levels tab.
               {srLevels.isError && ' S/R levels unavailable.'}
               {gateTargetLadder.isError && ' GTL diagnostic unavailable.'}
+              {symbolPaperTrades.length > 0 && (
+                <>
+                  {' '}
+                  <span className="text-emerald-400/90">▼</span> paper entry
+                  {' · '}
+                  <span className="text-red-400/90">▲</span> paper exit
+                </>
+              )}
             </p>
             <ProductionRankStrip
               setup={longSetup ?? shortSetup}