feat: Live-Paper-Engine — 5-min-Loop, API, Dashboard, Dockerfile

processCycle spiegelt Runner-Semantik exakt (Paritätstest gegen runBacktest),
Restart-Recovery über Cursor, DecisionLog mit Outcome-Backfill,
Bun.serve-API + statisches Dashboard, Deploy-Ziel trading.kuns.dev.

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

src/server/config.ts

@@ -2,6 +2,7 @@ import { z } from 'zod';
 
 const Env = z.object({
   DATABASE_URL: z.string().url(),
+  PORT: z.coerce.number().default(8080),
 });
 
 export const env = Env.parse(process.env);