fix: require explicit choice for conflicting bid item sources

src/services/bidSource.js

@@ -1,6 +1,6 @@
 // Prices belong to a specific source row, never to its current array position.
-export function sourceRows(tender, results) {
-  const items = tender?.items?.length
+export function sourceRows(tender, results, preferredSource = 'tender') {
+  const items = preferredSource !== 'analysis' && tender?.items?.length
     ? tender.items.map(k => ({ ...k, name: k.ad, quantity: `${k.miktar} ${k.birim || ''}`, keySpecs: k.keySpecs || [] }))
     : (Array.isArray(results?.itemsAndSpecs) ? results.itemsAndSpecs : []);
   const occurrences = new Map();
@@ -12,6 +12,18 @@ export function sourceRows(tender, results) {
   });
 }
 
+export function bidSourceOptions(tender, results, selection = {}) {
+  const tenderRows = sourceRows(tender, {});
+  const analysisRows = sourceRows({}, results);
+  const inventory = rows => rows.map(r => JSON.stringify([r.name?.trim(),r.quantity?.trim(),r.keySpecs || []])).sort();
+  const signature = JSON.stringify([inventory(tenderRows), inventory(analysisRows), results?.documentVersion || null]);
+  const conflict = tenderRows.length > 0 && analysisRows.length > 0 &&
+    JSON.stringify(inventory(tenderRows)) !== JSON.stringify(inventory(analysisRows));
+  const selected = selection.signature === signature && ['tender','analysis'].includes(selection.source) ? selection.source : '';
+  return { signature, conflict, selected, tenderCount:tenderRows.length, analysisCount:analysisRows.length,
+    needsSelection:conflict && !selected };
+}
+
 // Exact canonical content, not a lossy hash. Reordering distinct rows is harmless;
 // a changed quantity, specification, announcement or document requirement is not.
 export function bidSourceSnapshot(tender, results, rows = sourceRows(tender, results)) {
@@ -20,6 +32,7 @@ export function bidSourceSnapshot(tender, results, rows = sourceRows(tender, res
     announcement: tender?.aciklama || '',
     deadline: [tender?.tarih || '', tender?.saat || ''],
     documentVersion: results?.documentVersion ?? tender?.documentVersion ?? null,
+    analyzedItems: results?.itemsAndSpecs || [],
     rows: rows.map(r => r.priceKey).sort(),
     documents: results?.documentChecklist || [],
   });