Hide game sheet sections and winner selection until game has started

Wrapped WinnerBadge, SheetSection grid, and WinnerCard components in conditional rendering based on `gameStarted` flag derived from game metadata's `started` property. Prevents display of game content in lobby state before host initiates gameplay.

frontend/src/App.jsx

@@ -622,6 +622,7 @@ export default function App() {
     : [];
 
   const isHost = !!(me?.id && gameMeta?.host_user_id && me.id === gameMeta.host_user_id);
+  const gameStarted = !!gameMeta?.started;
 
   return (
     <div style={styles.page}>
@@ -660,42 +661,49 @@ export default function App() {
           hostUserId={gameMeta?.host_user_id || ""}
           isHost={isHost}
           started={!!gameMeta?.started}
+          finished={!!gameMeta?.winner_user_id}
+          winnerName={gameMeta?.winner_display_name || gameMeta?.winner_email || ""}
           chipCount={gameChips.length}
           onStartGame={startGame}
         />
 
-        {/* Sieger Badge: zwischen Spiel und Verdächtigte Person */}
-        <WinnerBadge
-          winner={{
-            display_name: gameMeta?.winner_display_name || "",
-            email: gameMeta?.winner_email || "",
-          }}
-        />
+        {gameStarted && (
+          <WinnerBadge
+            winner={{
+              display_name: gameMeta?.winner_display_name || "",
+              email: gameMeta?.winner_email || "",
+            }}
+          />
+        )}
 
         <HelpModal open={helpOpen} onClose={() => setHelpOpen(false)} />
 
-        <div style={{ marginTop: 14, display: "grid", gap: 14 }}>
-          {sections.map((sec) => (
-            <SheetSection
-              key={sec.key}
-              title={sec.title}
-              entries={sec.entries}
-              pulseId={pulseId}
-              onCycleStatus={cycleStatus}
-              onToggleTag={toggleTag}
-              displayTag={displayTag}
-            />
-          ))}
-        </div>
+        {gameStarted && (
+          <div style={{ marginTop: 14, display: "grid", gap: 14 }}>
+            {sections.map((sec) => (
+              <SheetSection
+                key={sec.key}
+                title={sec.title}
+                entries={sec.entries}
+                pulseId={pulseId}
+                onCycleStatus={cycleStatus}
+                onToggleTag={toggleTag}
+                displayTag={displayTag}
+              />
+            ))}
+          </div>
+        )}
 
         {/* Host-only Winner Auswahl */}
-        <WinnerCard
-          isHost={isHost}
-          members={members}
-          winnerUserId={winnerUserId}
-          setWinnerUserId={setWinnerUserId}
-          onSave={saveWinner}
-        />
+        {gameStarted && (
+          <WinnerCard
+            isHost={isHost}
+            members={members}
+            winnerUserId={winnerUserId}
+            setWinnerUserId={setWinnerUserId}
+            onSave={saveWinner}
+          />
+        )}
 
         <div style={{ height: 24 }} />
       </div>

frontend/src/components/GamePickerCard.jsx

@@ -12,6 +12,8 @@ export default function GamePickerCard({
   hostUserId,
   isHost = false,
   started = false,
+  finished = false,
+  winnerName = "",
   chipCount = 0,
   onStartGame,
 }) {
@@ -175,8 +177,10 @@ export default function GamePickerCard({
             {startError && <div style={{ marginTop: 8, color: "#ffb3b3", fontSize: 12 }}>{startError}</div>}
           </div>
         ) : (
-          <div style={{ margin: "0 12px 12px", padding: "10px 12px", borderRadius: 13, border: `1px solid ${stylesTokens.panelBorder}`, background: "rgba(124,255,182,0.07)", color: stylesTokens.textDim, fontSize: 12 }}>
-            ✓ Spiel läuft · {chipCount} Spieler-Chips erstellt
+          <div style={{ margin: "0 12px 12px", padding: "10px 12px", borderRadius: 13, border: `1px solid ${stylesTokens.panelBorder}`, background: finished ? "rgba(233,216,166,0.09)" : "rgba(124,255,182,0.07)", color: stylesTokens.textDim, fontSize: 12 }}>
+            {finished
+              ? `🏆 Spiel beendet${winnerName ? ` · Sieger: ${winnerName}` : ""}`
+              : `✓ Spiel läuft · ${chipCount} Spieler-Chips erstellt`}
           </div>
         )}