refactor: usar todayYMD_TZ desde shared en CommandService

Co-authored-by: aider (openrouter/openai/gpt-5) <aider@aider.chat>

src/services/command.ts

@@ -13,7 +13,7 @@ import { Metrics } from './metrics';
 import { ResponseQueue } from './response-queue';
 import { randomTokenBase64Url, sha256Hex } from '../utils/crypto';
 import { route as routeCommand } from './commands';
-import { ACTION_ALIASES, SCOPE_ALIASES } from './commands/shared';
+import { ACTION_ALIASES, SCOPE_ALIASES, todayYMD as todayYMD_TZ } from './commands/shared';
 import { parseNueva } from './commands/parsers/nueva';
 
 type CommandContext = {
@@ -71,18 +71,7 @@ export class CommandService {
 		// Usar formatDDMM desde utils/formatting
 
 		// TZ y "hoy" en TZ para marcar vencidas en listados
-		const TZ = process.env.TZ && process.env.TZ.trim() ? process.env.TZ : 'Europe/Madrid';
-		const ymdInTZ = (d: Date): string => {
-			const parts = new Intl.DateTimeFormat('en-GB', {
-				timeZone: TZ,
-				year: 'numeric',
-				month: '2-digit',
-				day: '2-digit',
-			}).formatToParts(d);
-			const get = (t: string) => parts.find(p => p.type === t)?.value || '';
-			return `${get('year')}-${get('month')}-${get('day')}`;
-		};
-		const todayYMD = ymdInTZ(new Date());
+		const todayYMD = todayYMD_TZ();
 
 		if (!action || action === 'ayuda') {
 			const feature = String(process.env.FEATURE_HELP_V2 ?? 'true').toLowerCase();