fix: bind bid prices and review to source content

src/services/bidSource.js

@@ -0,0 +1,31 @@
+// Prices belong to a specific source row, never to its current array position.
+export function sourceRows(tender, results) {
+  const items = 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();
+  return items.map(k => {
+    const identity = JSON.stringify([k.id ?? k.no ?? null, k.kisim ?? null, k.name, k.quantity, k.keySpecs || []]);
+    const occurrence = occurrences.get(identity) || 0;
+    occurrences.set(identity, occurrence + 1);
+    return { ...k, priceKey: JSON.stringify([identity, occurrence]) };
+  });
+}
+
+// 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)) {
+  return JSON.stringify({
+    tender: tender?.ikn || tender?.id,
+    announcement: tender?.aciklama || '',
+    deadline: [tender?.tarih || '', tender?.saat || ''],
+    documentVersion: results?.documentVersion ?? tender?.documentVersion ?? null,
+    rows: rows.map(r => r.priceKey).sort(),
+    documents: results?.documentChecklist || [],
+  });
+}
+
+export function restoreBidPrices(draft = {}) {
+  // Old positional prices cannot safely be assigned without their original rows.
+  return draft.priceSchema === 1 && draft.pricesBySource ? draft.pricesBySource : {};
+}