feat: сохранение и экспорт ручной цены (buy/sale) из вкладки Ценообразование

Сохранение:
- restoreAutosaveDraftIfAny теперь восстанавливает pricing_ui из notes драфта
- saveConfigOnExit привязан к pagehide и visibilitychange — цены сохраняются
  на сервер при уходе со страницы без явного нажатия «Сохранить»

Экспорт CSV:
- exportPricingCSV передаёт manual_price (buy для FOB, sale для DDP)
- ProjectPricingExportOptions.ManualPrice *float64 — новое поле
- distributeManualPrice распределяет ручную цену пропорционально estimate
  с коррекцией остатка на последней строке
- Колонка «Ручная цена» в CSV (заголовок, строки, итог конфига)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

internal/services/export.go

@@ -60,6 +60,7 @@ type ProjectPricingExportOptions struct {
 	IncludeCompetitor bool     `json:"include_competitor"`
 	Basis             string   `json:"basis"`         // "fob" or "ddp"; empty defaults to "fob"
 	SaleMarkup        float64  `json:"sale_markup"`   // DDP multiplier; 0 defaults to 1.3
+	ManualPrice       *float64 `json:"manual_price"`  // user-defined total price; distributed proportionally across rows
 }
 
 func (o ProjectPricingExportOptions) saleMarkupFactor() float64 {
@@ -95,6 +96,7 @@ type ProjectPricingExportRow struct {
 	Estimate     *float64
 	Stock        *float64
 	Competitor   *float64
+	ManualPrice  *float64 // proportional share of the user-defined total price
 }
 
 // ToCSV writes project export data in the new structured CSV format.
@@ -442,6 +444,9 @@ func (s *ExportService) buildPricingExportBlock(cfg *models.Configuration, opts
 		if opts.isDDP() {
 			applyDDPMarkup(block.Rows, opts.saleMarkupFactor())
 		}
+		if opts.ManualPrice != nil && *opts.ManualPrice > 0 {
+			distributeManualPrice(block.Rows, *opts.ManualPrice)
+		}
 		return block, nil
 	}
 
@@ -464,6 +469,9 @@ func (s *ExportService) buildPricingExportBlock(cfg *models.Configuration, opts
 	if opts.isDDP() {
 		applyDDPMarkup(block.Rows, opts.saleMarkupFactor())
 	}
+	if opts.ManualPrice != nil && *opts.ManualPrice > 0 {
+		distributeManualPrice(block.Rows, *opts.ManualPrice)
+	}
 
 	return block, nil
 }
@@ -716,6 +724,44 @@ func computeMappingTotal(priceMap map[string]pricingLevels, mappings []localdb.V
 	return floatPtr(total)
 }
 
+// distributeManualPrice sets ManualPrice on each row proportionally based on the
+// row's Estimate share. The last row with a price absorbs rounding remainder so
+// the sum of ManualPrice values always equals manualPrice exactly.
+func distributeManualPrice(rows []ProjectPricingExportRow, manualPrice float64) {
+	if manualPrice <= 0 || len(rows) == 0 {
+		return
+	}
+	totalEstimate := 0.0
+	for _, row := range rows {
+		if row.Estimate != nil && *row.Estimate > 0 {
+			totalEstimate += *row.Estimate
+		}
+	}
+	if totalEstimate <= 0 {
+		return
+	}
+	lastIdx := -1
+	for i, row := range rows {
+		if row.Estimate != nil && *row.Estimate > 0 {
+			lastIdx = i
+		}
+	}
+	assigned := 0.0
+	for i, row := range rows {
+		if row.Estimate == nil || *row.Estimate <= 0 {
+			continue
+		}
+		var share float64
+		if i == lastIdx {
+			share = math.Round((manualPrice-assigned)*100) / 100
+		} else {
+			share = math.Round((*row.Estimate/totalEstimate)*manualPrice*100) / 100
+			assigned += share
+		}
+		rows[i].ManualPrice = floatPtr(share)
+	}
+}
+
 func computeSingleLotTotal(priceMap map[string]pricingLevels, lotName string, qty int, selector func(pricingLevels) *float64) *float64 {
 	price := selector(priceMap[lotName])
 	if price == nil || *price <= 0 {
@@ -744,7 +790,7 @@ func estimateOnlyTotal(estimatePrice *float64, fallbackUnitPrice float64, quanti
 }
 
 func pricingCSVHeaders(opts ProjectPricingExportOptions) []string {
-	headers := make([]string, 0, 8)
+	headers := make([]string, 0, 9)
 	headers = append(headers, "Line Item")
 	if opts.IncludeLOT {
 		headers = append(headers, "LOT")
@@ -762,11 +808,14 @@ func pricingCSVHeaders(opts ProjectPricingExportOptions) []string {
 	if opts.IncludeCompetitor {
 		headers = append(headers, "Конкуренты")
 	}
+	if opts.ManualPrice != nil && *opts.ManualPrice > 0 {
+		headers = append(headers, "Ручная цена")
+	}
 	return headers
 }
 
 func pricingCSVRow(row ProjectPricingExportRow, opts ProjectPricingExportOptions) []string {
-	record := make([]string, 0, 8)
+	record := make([]string, 0, 9)
 	record = append(record, "")
 	if opts.IncludeLOT {
 		record = append(record, emptyDash(row.LotDisplay))
@@ -788,11 +837,14 @@ func pricingCSVRow(row ProjectPricingExportRow, opts ProjectPricingExportOptions
 	if opts.IncludeCompetitor {
 		record = append(record, formatMoneyValue(row.Competitor))
 	}
+	if opts.ManualPrice != nil && *opts.ManualPrice > 0 {
+		record = append(record, formatMoneyValue(row.ManualPrice))
+	}
 	return record
 }
 
 func pricingConfigSummaryRow(cfg ProjectPricingExportConfig, opts ProjectPricingExportOptions) []string {
-	record := make([]string, 0, 8)
+	record := make([]string, 0, 9)
 	record = append(record, fmt.Sprintf("%d", cfg.Line))
 	if opts.IncludeLOT {
 		record = append(record, "")
@@ -814,6 +866,9 @@ func pricingConfigSummaryRow(cfg ProjectPricingExportConfig, opts ProjectPricing
 	if opts.IncludeCompetitor {
 		record = append(record, formatMoneyValue(sumPricingColumn(cfg.Rows, func(row ProjectPricingExportRow) *float64 { return row.Competitor })))
 	}
+	if opts.ManualPrice != nil && *opts.ManualPrice > 0 {
+		record = append(record, formatMoneyValue(opts.ManualPrice))
+	}
 	return record
 }
 

web/templates/index.html

@@ -879,6 +879,12 @@ document.addEventListener('DOMContentLoaded', async function() {
         }
     });
 
+    // Save pricing state (ручная цена) on page exit so it survives navigation
+    window.addEventListener('pagehide', saveConfigOnExit);
+    document.addEventListener('visibilitychange', () => {
+        if (document.visibilityState === 'hidden') saveConfigOnExit();
+    });
+
     // Load vendor spec BOM for this configuration
     if (configUUID) {
         loadVendorSpec(configUUID);
@@ -2440,6 +2446,9 @@ function restoreAutosaveDraftIfAny() {
                 customPriceInput.value = '';
             }
         }
+        if (payload.notes) {
+            restorePricingStateFromNotes(payload.notes);
+        }
         hasUnsavedChanges = true;
     } catch (_) {
         // ignore invalid draft
@@ -4388,6 +4397,8 @@ function setPricingCustomPriceFromVendor() {
 async function exportPricingCSV(table) {
     if (!configUUID) { showToast('Сохраните конфигурацию перед экспортом', 'error'); return; }
     const basis = table === 'sale' ? 'ddp' : 'fob';
+    const manualInputId = table === 'sale' ? 'pricing-custom-price-sale' : 'pricing-custom-price-buy';
+    const manualPrice = parseDecimalInput(document.getElementById(manualInputId)?.value || '');
     try {
         const resp = await fetch(`/api/configs/${configUUID}/export/pricing`, {
             method: 'POST',
@@ -4399,6 +4410,7 @@ async function exportPricingCSV(table) {
                 include_stock: true,
                 include_competitor: true,
                 basis: basis,
+                manual_price: manualPrice > 0 ? manualPrice : null,
             }),
         });
         if (!resp.ok) { showToast('Ошибка экспорта', 'error'); return; }