refactor: /api/trump nutzt json()-Helper + camelCase (Review Task 10)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/server/api/server.ts

@@ -224,13 +224,13 @@ export function createServer(engine: LiveEngine, gridEngine: GridEngine, trumpEn
             return json(await getGrid(gridEngine));
           case '/api/trump': {
             const [state] = await db.select().from(botState).where(eq(botState.id, 3));
-            const positions_trump = await db.select().from(trumpPositions);
+            const trumpPos = await db.select().from(trumpPositions);
             const events = await db.select().from(trumpEvents).orderBy(desc(trumpEvents.eventTs)).limit(50);
-            return Response.json({
+            return json({
               status: trumpEngine.status,
               cash: state?.cash ?? null,
               startCapital: state?.startCapital ?? null,
-              positions: positions_trump,
+              positions: trumpPos,
               events,
             });
           }