feat: show stock names as primary display in portfolio card, detail, and rebalance pages

frontend/src/app/portfolio/[id]/page.tsx

@@ -33,6 +33,7 @@ interface Target {
 interface Transaction {
   id: number;
   ticker: string;
+  name: string | null;
   tx_type: string;
   quantity: number;
   price: number;
@@ -341,10 +342,7 @@ export default function PortfolioDetailPage() {
                         {portfolio.holdings.map((holding, index) => (
                           <tr key={holding.ticker}>
                             <td className="px-4 py-3">
-                              <div className="font-medium text-sm">{holding.name || holding.ticker}</div>
+                              <span className="font-medium text-sm" title={holding.ticker}>{holding.name || holding.ticker}</span>
-                              {holding.name && (
-                                <div className="text-xs text-muted-foreground">{holding.ticker}</div>
-                              )}
                             </td>
                             <td className="px-4 py-3 text-sm text-right">
                               {holding.quantity.toLocaleString()}
@@ -454,7 +452,7 @@ export default function PortfolioDetailPage() {
                             <td className="px-4 py-3 text-sm text-muted-foreground">
                               {new Date(tx.executed_at).toLocaleString('ko-KR')}
                             </td>
-                            <td className="px-4 py-3 text-sm font-medium">{tx.ticker}</td>
+                            <td className="px-4 py-3 text-sm font-medium" title={tx.ticker}>{tx.name || tx.ticker}</td>
                             <td className="px-4 py-3 text-sm text-center">
                               <span
                                 className={`px-2 py-1 rounded text-xs font-medium ${
@@ -519,7 +517,7 @@ export default function PortfolioDetailPage() {
                         return (
                           <div key={target.ticker} className="space-y-2">
                             <div className="flex justify-between text-sm">
-                              <span className="font-medium">{holding?.name || target.ticker}</span>
+                              <span className="font-medium" title={target.ticker}>{holding?.name || target.ticker}</span>
                               <span className="text-muted-foreground">
                                 {actualRatio.toFixed(1)}% / {target.target_ratio.toFixed(1)}%
                                 <span

frontend/src/app/portfolio/[id]/rebalance/page.tsx

@@ -59,6 +59,7 @@ export default function RebalancePage() {
   const [result, setResult] = useState<RebalanceResponse | null>(null);
   const [calculating, setCalculating] = useState(false);
   const [error, setError] = useState<string | null>(null);
+  const [nameMap, setNameMap] = useState<Record<string, string>>({});
 
   useEffect(() => {
     const init = async () => {
@@ -81,6 +82,18 @@ export default function RebalancePage() {
           initialPrices[ticker] = '';
         });
         setPrices(initialPrices);
+
+        // Fetch stock names from portfolio detail
+        try {
+          const detail = await api.get<{ holdings: { ticker: string; name: string | null }[] }>(`/api/portfolios/${portfolioId}/detail`);
+          const names: Record<string, string> = {};
+          for (const h of detail.holdings) {
+            if (h.name) names[h.ticker] = h.name;
+          }
+          setNameMap(names);
+        } catch {
+          // Names are optional, continue without
+        }
       } catch {
         router.push('/login');
       } finally {
@@ -115,6 +128,12 @@ export default function RebalancePage() {
         body
       );
       setResult(data);
+      // Update name map from results
+      const newNames = { ...nameMap };
+      for (const item of data.items) {
+        if (item.name) newNames[item.ticker] = item.name;
+      }
+      setNameMap(newNames);
     } catch (err) {
       setError(err instanceof Error ? err.message : 'Calculation failed');
     } finally {
@@ -180,7 +199,7 @@ export default function RebalancePage() {
               return (
                 <div key={ticker}>
                   <Label htmlFor={`price-${ticker}`}>
-                    {ticker} {target ? `(목표 ${target.target_ratio}%)` : ''} - 보유 {getHoldingQty(ticker)}주
+                    {nameMap[ticker] || ticker} {target ? `(목표 ${target.target_ratio}%)` : ''} - 보유 {getHoldingQty(ticker)}주
                   </Label>
                   <Input
                     id={`price-${ticker}`}
@@ -297,10 +316,7 @@ export default function RebalancePage() {
                     {result.items.map((item) => (
                       <tr key={item.ticker}>
                         <td className="px-3 py-3">
-                          <div className="font-medium">{item.ticker}</div>
+                          <span className="font-medium" title={item.ticker}>{item.name || item.ticker}</span>
-                          {item.name && (
-                            <div className="text-xs text-muted-foreground">{item.name}</div>
-                          )}
                         </td>
                         <td className="px-3 py-3 text-sm text-right">
                           {item.current_quantity.toLocaleString()}

frontend/src/app/portfolio/page.tsx

@@ -11,6 +11,7 @@ import { api } from '@/lib/api';
 
 interface HoldingWithValue {
   ticker: string;
+  name: string | null;
   current_ratio: number | null;
 }
 

frontend/src/components/portfolio/portfolio-card.tsx

@@ -6,6 +6,7 @@ import { PieChart, Pie, Cell, ResponsiveContainer } from 'recharts';
 
 interface Holding {
   ticker: string;
+  name: string | null;
   current_ratio: number | null;
 }
 
@@ -61,7 +62,8 @@ export function PortfolioCard({
     .filter((h) => h.current_ratio !== null && h.current_ratio > 0)
     .slice(0, 6)
     .map((h, index) => ({
-      name: h.ticker,
+      name: h.name || h.ticker,
+      ticker: h.ticker,
       value: h.current_ratio ?? 0,
       color: CHART_COLORS[index % CHART_COLORS.length],
     }));
@@ -144,6 +146,7 @@ export function PortfolioCard({
                 <span
                   key={index}
                   className="text-xs px-2 py-0.5 rounded bg-muted text-muted-foreground"
+                  title={item.ticker}
                 >
                   {item.name}
                 </span>