fix: validate firm email consistently before bid output

src/services/preparationSummary.js

@@ -1,4 +1,4 @@
-import {bidFirmFields} from './bidFirmFields.js';
+import {bidFirmIssues} from './bidFirmFields.js';
 import {sourceRows,bidSourceOptions,bidSourceSnapshot,restoreBidPrices} from './bidSource.js';
 import {selectBidLots} from './bidLots.js';
 import {bidTotal,bidAmount,validateBidRows} from './bidValidation.js';
@@ -21,7 +21,7 @@ export function preparationSummary(tender,vault,now=new Date()) {
  if(draft.reviewedSource!==snapshot)add('source','Resmi kaynak karşılaştırması gerekli.');
  if(analysis.sourceReview?.status==='partial')add('analysis','Analiz kısmi; kaynak kontrolünü tamamlayın.');
  if(options.needsSelection)add('itemSource','Resmi cetvele uygun kalem listesini seçin.');
- for(const field of bidFirmFields)if(field.zorunlu&&!String(draft.firma?.[field.k] || '').trim())add(`firm:${field.k}`,`${field.l} kayıtlı taslakta eksik.`);
+ for(const issue of bidFirmIssues(draft.firma))add(`firm:${issue.k}`,issue.message);
  const type=bidTypeForForm(tender.aciklama,analysis.procurementTerms?.bidType),bidType=draft.teklifTuru || type.type || '';
  if(!['birim','goturu'].includes(bidType)||type.status==='conflict'||(type.type&&type.type!==bidType))add('bidType','Teklif türünü doğrulayın.');
  const validity=bidValidityForForm(tender.aciklama,analysis.procurementTerms?.bidValidity),days=Number(draft.gecerlilikGun || validity.days || '');