initial refactori trasnfer to laying, and depretitation to 25 week

add excel export for purchase supplier report

See merge request mbugroup/lti-api!563

internal/common/repository/common.hppv2.repository.go

@@ -102,11 +102,17 @@ type HppV2CostRepository interface {
 	GetProjectFlockKandangContext(ctx context.Context, projectFlockKandangId uint) (*HppV2ProjectFlockKandangContext, error)
 	GetProjectFlockKandangIDs(ctx context.Context, projectFlockId uint) ([]uint, error)
 	GetLatestTransferInputByProjectFlockKandangID(ctx context.Context, projectFlockKandangId uint, period time.Time) (*HppV2LatestTransferInputRow, error)
+	// GetAllTransferInputsByProjectFlockKandangID return SEMUA approved transfer ke target kandang
+	// itu, untuk skenario multi-source di mana 1 target menerima dari multiple transfer terpisah.
+	// Setiap row = 1 transfer dengan cost basis & chick_in_date sendiri (per source). Order:
+	// effective_date ASC, id ASC (kronologis).
+	GetAllTransferInputsByProjectFlockKandangID(ctx context.Context, projectFlockKandangId uint, period time.Time) ([]HppV2LatestTransferInputRow, error)
 	GetManualDepreciationInputByProjectFlockID(ctx context.Context, projectFlockID uint) (*HppV2ManualDepreciationInputRow, error)
 	GetRecordingStockRoutingAdjustmentCostByProjectFlockID(ctx context.Context, projectFlockID uint, periodDate time.Time) (float64, error)
 	GetFarmDepreciationSnapshotByProjectFlockIDAndPeriod(ctx context.Context, projectFlockID uint, periodDate time.Time) (*HppV2FarmDepreciationSnapshotRow, error)
 	GetEarliestChickInDateByProjectFlockID(ctx context.Context, projectFlockID uint) (*time.Time, error)
-	GetDepreciationPercents(ctx context.Context, houseTypes []string, maxDay int) (map[string]map[int]float64, error)
+	GetChickinPopulationByPFKForFarm(ctx context.Context, projectFlockID uint) (map[uint]float64, error)
+	GetMultiplicationPercentages(ctx context.Context, houseTypes []string, maxDay int) (map[string]map[int]float64, error)
 	ListUsageCostRowsByProductFlags(ctx context.Context, projectFlockKandangIDs []uint, flagNames []string, date *time.Time) ([]HppV2UsageCostRow, error)
 	ListAdjustmentCostRowsByProductFlags(ctx context.Context, projectFlockKandangIDs []uint, flagNames []string, date *time.Time) ([]HppV2AdjustmentCostRow, error)
 	ListExpenseRealizationRowsByProjectFlockKandangIDs(ctx context.Context, projectFlockKandangIDs []uint, date *time.Time, ekspedisi bool) ([]HppV2ExpenseCostRow, error)
@@ -230,6 +236,62 @@ LIMIT 1
 	return &row, nil
 }
 
+func (r *HppV2RepositoryImpl) GetAllTransferInputsByProjectFlockKandangID(
+	ctx context.Context,
+	projectFlockKandangId uint,
+	period time.Time,
+) ([]HppV2LatestTransferInputRow, error) {
+	var rows []HppV2LatestTransferInputRow
+	query := `
+WITH latest_transfer_approval AS (
+	SELECT a.approvable_id, a.action
+	FROM approvals a
+	JOIN (
+		SELECT approvable_id, MAX(action_at) AS latest_action_at
+		FROM approvals
+		WHERE approvable_type = @approval_type
+		GROUP BY approvable_id
+	) la
+		ON la.approvable_id = a.approvable_id
+		AND la.latest_action_at = a.action_at
+	WHERE a.approvable_type = @approval_type
+),
+approved_transfers AS (
+	SELECT
+		lt.id,
+		lt.from_project_flock_id,
+		COALESCE(DATE(lt.effective_move_date), DATE(lt.economic_cutoff_date), DATE(lt.transfer_date)) AS effective_date
+	FROM laying_transfers lt
+	JOIN latest_transfer_approval lta ON lta.approvable_id = lt.id
+	WHERE lt.deleted_at IS NULL
+	  AND lt.executed_at IS NOT NULL
+	  AND lta.action = 'APPROVED'
+)
+SELECT
+	ltt.target_project_flock_kandang_id AS project_flock_kandang_id,
+	at.from_project_flock_id AS source_project_flock_id,
+	at.effective_date AS transfer_date,
+	ltt.total_qty AS transfer_qty,
+	at.id AS transfer_id
+FROM laying_transfer_targets ltt
+JOIN approved_transfers at ON at.id = ltt.laying_transfer_id
+WHERE ltt.deleted_at IS NULL
+  AND ltt.target_project_flock_kandang_id = @project_flock_kandang_id
+  AND at.effective_date <= DATE(@period_date)
+ORDER BY at.effective_date ASC, at.id ASC
+`
+
+	err := r.db.WithContext(ctx).Raw(query, map[string]any{
+		"approval_type":            utils.ApprovalWorkflowTransferToLaying.String(),
+		"project_flock_kandang_id": projectFlockKandangId,
+		"period_date":              period,
+	}).Scan(&rows).Error
+	if err != nil {
+		return nil, err
+	}
+	return rows, nil
+}
+
 func (r *HppV2RepositoryImpl) GetManualDepreciationInputByProjectFlockID(
 	ctx context.Context,
 	projectFlockID uint,
@@ -373,7 +435,34 @@ func (r *HppV2RepositoryImpl) GetEarliestChickInDateByProjectFlockID(ctx context
 	return selected.ChickInDate, nil
 }
 
-func (r *HppV2RepositoryImpl) GetDepreciationPercents(
+func (r *HppV2RepositoryImpl) GetChickinPopulationByPFKForFarm(
+	ctx context.Context,
+	projectFlockID uint,
+) (map[uint]float64, error) {
+	type row struct {
+		ProjectFlockKandangID uint    `gorm:"column:project_flock_kandang_id"`
+		TotalQty              float64 `gorm:"column:total_qty"`
+	}
+	var rows []row
+	err := r.db.WithContext(ctx).
+		Table("project_chickins AS pc").
+		Select("pc.project_flock_kandang_id, SUM(pc.usage_qty) AS total_qty").
+		Joins("JOIN project_flock_kandangs AS pfk ON pfk.id = pc.project_flock_kandang_id").
+		Where("pc.deleted_at IS NULL").
+		Where("pfk.project_flock_id = ?", projectFlockID).
+		Group("pc.project_flock_kandang_id").
+		Scan(&rows).Error
+	if err != nil {
+		return nil, err
+	}
+	result := make(map[uint]float64, len(rows))
+	for _, x := range rows {
+		result[x.ProjectFlockKandangID] = x.TotalQty
+	}
+	return result, nil
+}
+
+func (r *HppV2RepositoryImpl) GetMultiplicationPercentages(
 	ctx context.Context,
 	houseTypes []string,
 	maxDay int,
@@ -384,19 +473,19 @@ func (r *HppV2RepositoryImpl) GetDepreciationPercents(
 	}
 
 	type row struct {
-		HouseType           string
-		Day                 int
-		DepreciationPercent float64
+		HouseType                string
+		Day                      int
+		MultiplicationPercentage float64
 	}
 
 	rows := make([]row, 0)
-	err := r.db.WithContext(ctx).
-		Table("house_depreciation_standards").
-		Select("house_type::text AS house_type, day, depreciation_percent").
-		Where("house_type::text IN ?", houseTypes).
-		Where("day <= ?", maxDay).
-		Order("house_type ASC, day ASC").
-		Scan(&rows).Error
+	err := r.db.WithContext(ctx).Raw(`
+		SELECT DISTINCT ON (house_type::text, day)
+			house_type::text AS house_type, day, multiplication_percentage
+		FROM house_depreciation_standards
+		WHERE house_type::text IN ? AND day <= ?
+		ORDER BY house_type, day, effective_date DESC NULLS LAST
+	`, houseTypes, maxDay).Scan(&rows).Error
 	if err != nil {
 		return nil, err
 	}
@@ -405,7 +494,7 @@ func (r *HppV2RepositoryImpl) GetDepreciationPercents(
 		if _, exists := result[item.HouseType]; !exists {
 			result[item.HouseType] = make(map[int]float64)
 		}
-		result[item.HouseType][item.Day] = item.DepreciationPercent
+		result[item.HouseType][item.Day] = item.MultiplicationPercentage
 	}
 
 	return result, nil

internal/common/service/common.depreciation.service.go

@@ -6,8 +6,8 @@ import (
 )
 
 const (
-	depreciationStartAgeDayCloseHouse = 155
-	depreciationStartAgeDayOpenHouse  = 176
+	depreciationStartAgeDayCloseHouse = 175
+	depreciationStartAgeDayOpenHouse  = 175
 )
 
 func NormalizeDepreciationHouseType(raw string) string {
@@ -26,8 +26,8 @@ func DepreciationStartAgeDay(houseType string) int {
 }
 
 func FlockAgeDay(originDate time.Time, periodDate time.Time) int {
-	origin := time.Date(originDate.Year(), originDate.Month(), originDate.Day(), 0, 0, 0, 0, originDate.Location())
-	period := time.Date(periodDate.Year(), periodDate.Month(), periodDate.Day(), 0, 0, 0, 0, periodDate.Location())
+	origin := time.Date(originDate.Year(), originDate.Month(), originDate.Day(), 0, 0, 0, 0, time.UTC)
+	period := time.Date(periodDate.Year(), periodDate.Month(), periodDate.Day(), 0, 0, 0, 0, time.UTC)
 	if period.Before(origin) {
 		return 0
 	}
@@ -47,9 +47,9 @@ func CalculateDepreciationAtDayN(
 	initialPulletCost float64,
 	dayN int,
 	houseType string,
-	percentByHouseType map[string]map[int]float64,
+	multiplicationByHouseType map[string]map[int]float64,
 ) (float64, float64, float64) {
-	return CalculateDepreciationFromDayRange(initialPulletCost, 1, dayN, houseType, percentByHouseType)
+	return CalculateDepreciationFromDayRange(initialPulletCost, 1, dayN, houseType, multiplicationByHouseType)
 }
 
 func CalculateDepreciationFromDayRange(
@@ -57,8 +57,8 @@ func CalculateDepreciationFromDayRange(
 	startDay int,
 	endDay int,
 	houseType string,
-	percentByHouseType map[string]map[int]float64,
-) (float64, float64, float64) {
+	multiplicationByHouseType map[string]map[int]float64,
+) (pulletCostDayN, depreciationValue, multiplicationPercentage float64) {
 	if initialPulletCost <= 0 || endDay <= 0 {
 		return 0, 0, 0
 	}
@@ -70,30 +70,30 @@ func CalculateDepreciationFromDayRange(
 	}
 
 	normalizedHouseType := NormalizeDepreciationHouseType(houseType)
-	housePercent, exists := percentByHouseType[normalizedHouseType]
+	houseMult, exists := multiplicationByHouseType[normalizedHouseType]
 	if !exists {
 		return 0, 0, 0
 	}
 
 	current := initialPulletCost
-	pulletCostDayN := 0.0
-	depreciationValue := 0.0
-	depreciationPercent := 0.0
 	for day := startDay; day <= endDay; day++ {
-		pct := housePercent[day]
-		dep := current * (pct / 100)
+		mult, ok := houseMult[day]
+		if !ok {
+			// No standard for this day → assume no depreciation (mult=1).
+			mult = 1.0
+		}
 		if day == endDay {
 			pulletCostDayN = current
-			depreciationValue = dep
-			depreciationPercent = pct
+			multiplicationPercentage = mult
+			depreciationValue = current * (1.0 - mult)
 		}
-		current -= dep
+		current = current * mult
 		if current < 0 {
 			current = 0
 		}
 	}
 
-	return pulletCostDayN, depreciationValue, depreciationPercent
+	return pulletCostDayN, depreciationValue, multiplicationPercentage
 }
 
 func CalculateEffectiveDepreciationPercent(totalDepreciationValue, totalPulletCostDayN float64) float64 {

internal/common/service/common.hppv2.service.go

@@ -1191,26 +1191,72 @@ func (s *hppV2Service) getDepreciationComponent(
 		}, nil
 	}
 
-	if totalPulletCost <= 0 {
-		return nil, nil
-	}
-
-	transferInput, err := s.hppRepo.GetLatestTransferInputByProjectFlockKandangID(context.Background(), projectFlockKandangId, periodDate)
+	// Multi-source support: 1 target kandang bisa menerima dari MULTIPLE transfer terpisah
+	// (tiap transfer = 1 source kandang). Depresiasi per target = SUM dari per-transfer depresiasi.
+	// Setiap transfer dihitung dengan chick_in_date source-nya sendiri dan cost basis pro-rated
+	// berdasarkan qty share (transfer.qty / totalTransferQty).
+	transferInputs, err := s.hppRepo.GetAllTransferInputsByProjectFlockKandangID(context.Background(), projectFlockKandangId, periodDate)
 	if err != nil {
 		return nil, err
 	}
 
-	var part *HppV2ComponentPart
-	if transferInput != nil && transferInput.SourceProjectFlockID > 0 {
-		part, err = s.buildNormalTransferDepreciationPart(contextRow, transferInput, periodDate, totalPulletCost)
-		if err != nil {
-			return nil, err
+	// Filter valid transfers (punya source flock id)
+	validTransfers := make([]commonRepo.HppV2LatestTransferInputRow, 0, len(transferInputs))
+	totalTransferQty := 0.0
+	for _, t := range transferInputs {
+		if t.SourceProjectFlockID == 0 {
+			continue
 		}
-	} else {
-		part, err = s.buildManualCutoverDepreciationPart(projectFlockKandangId, contextRow, periodDate, totalPulletCost)
-		if err != nil {
-			return nil, err
+		validTransfers = append(validTransfers, t)
+		totalTransferQty += t.TransferQty
+	}
+
+	if len(validTransfers) > 0 {
+		if totalPulletCost <= 0 {
+			return nil, nil
 		}
+
+		totalDepreciation := 0.0
+		parts := make([]HppV2ComponentPart, 0, len(validTransfers))
+		for i := range validTransfers {
+			t := validTransfers[i]
+			// Pro-rate cost basis per transfer berdasarkan qty share.
+			// CATATAN: pendekatan ini AKURAT kalau cost per ekor sama antar source flock.
+			// Kalau cost per ekor berbeda signifikan antar source, follow-up: refactor
+			// `buildGrowingUsagePart` untuk multi-source-flock cost computation.
+			transferCostBasis := totalPulletCost
+			if totalTransferQty > 0 && len(validTransfers) > 1 {
+				transferCostBasis = totalPulletCost * (t.TransferQty / totalTransferQty)
+			}
+
+			part, partErr := s.buildNormalTransferDepreciationPart(contextRow, &t, periodDate, transferCostBasis)
+			if partErr != nil {
+				return nil, partErr
+			}
+			if part == nil {
+				continue
+			}
+			totalDepreciation += part.Total
+			parts = append(parts, *part)
+		}
+
+		if len(parts) == 0 {
+			return nil, nil
+		}
+
+		return &HppV2Component{
+			Code:   hppV2ComponentDepreciation,
+			Title:  "Depreciation",
+			Scopes: []string{hppV2ScopeProductionCost},
+			Total:  totalDepreciation,
+			Parts:  parts,
+		}, nil
+	}
+
+	// Fallback: manual cut-over (kandang tanpa transfer record)
+	part, err := s.buildManualCutoverDepreciationPart(projectFlockKandangId, contextRow, periodDate, totalPulletCost)
+	if err != nil {
+		return nil, err
 	}
 	if part == nil {
 		return nil, nil
@@ -1344,20 +1390,22 @@ func (s *hppV2Service) buildNormalTransferDepreciationPart(
 	}
 
 	houseType := NormalizeDepreciationHouseType(contextRow.HouseType)
-	percentByHouseType, err := s.hppRepo.GetDepreciationPercents(context.Background(), []string{houseType}, scheduleDay)
+	multiplicationByHouseType, err := s.hppRepo.GetMultiplicationPercentages(context.Background(), []string{houseType}, scheduleDay)
 	if err != nil {
 		return nil, err
 	}
 
-	pulletCostDayN, depreciationValue, depreciationPercent := CalculateDepreciationAtDayN(
+	pulletCostDayN, depreciationValue, multiplicationPercentage := CalculateDepreciationAtDayN(
 		totalPulletCost,
 		scheduleDay,
 		contextRow.HouseType,
-		percentByHouseType,
+		multiplicationByHouseType,
 	)
-	if depreciationValue <= 0 {
+	if depreciationValue <= 0 && pulletCostDayN <= 0 {
 		return nil, nil
 	}
+	totalValueAfter := pulletCostDayN * multiplicationPercentage
+	depreciationPercent := (1.0 - multiplicationPercentage) * 100.0
 
 	return &HppV2ComponentPart{
 		Code:   hppV2PartDepreciationNormal,
@@ -1365,13 +1413,15 @@ func (s *hppV2Service) buildNormalTransferDepreciationPart(
 		Scopes: []string{hppV2ScopeProductionCost},
 		Total:  depreciationValue,
 		Details: map[string]any{
-			"basis_total":             totalPulletCost,
-			"pullet_cost_day_n":       pulletCostDayN,
-			"depreciation_percent":    depreciationPercent,
-			"schedule_day":            scheduleDay,
-			"origin_date":             formatDateOnly(*originDate),
-			"transfer_date":           formatDateOnly(transferInput.TransferDate),
-			"source_project_flock_id": transferInput.SourceProjectFlockID,
+			"basis_total":                           totalPulletCost,
+			"pullet_cost_day_n":                     pulletCostDayN,
+			"multiplication_percentage":             multiplicationPercentage,
+			"total_value_pullet_after_depreciation": totalValueAfter,
+			"depreciation_percent":                  depreciationPercent,
+			"schedule_day":                          scheduleDay,
+			"origin_date":                           formatDateOnly(*originDate),
+			"transfer_date":                         formatDateOnly(transferInput.TransferDate),
+			"source_project_flock_id":               transferInput.SourceProjectFlockID,
 		},
 		References: []HppV2Reference{
 			{
@@ -1392,7 +1442,7 @@ func (s *hppV2Service) buildManualCutoverDepreciationPart(
 	periodDate time.Time,
 	totalPulletCost float64,
 ) (*HppV2ComponentPart, error) {
-	if contextRow == nil || totalPulletCost <= 0 {
+	if contextRow == nil {
 		return nil, nil
 	}
 
@@ -1407,6 +1457,21 @@ func (s *hppV2Service) buildManualCutoverDepreciationPart(
 		return nil, nil
 	}
 
+	populations, err := s.hppRepo.GetChickinPopulationByPFKForFarm(context.Background(), contextRow.ProjectFlockID)
+	if err != nil {
+		return nil, err
+	}
+	var totalPopulation float64
+	for _, qty := range populations {
+		totalPopulation += qty
+	}
+	kandangPopulation := populations[projectFlockKandangId]
+	if totalPopulation <= 0 || kandangPopulation <= 0 {
+		return nil, nil
+	}
+	populationShare := kandangPopulation / totalPopulation
+	basis := manualInput.TotalCost * populationShare
+
 	originDate, err := s.hppRepo.GetEarliestChickInDateByProjectFlockID(context.Background(), contextRow.ProjectFlockID)
 	if err != nil {
 		return nil, err
@@ -1427,21 +1492,24 @@ func (s *hppV2Service) buildManualCutoverDepreciationPart(
 	}
 
 	houseType := NormalizeDepreciationHouseType(contextRow.HouseType)
-	percentByHouseType, err := s.hppRepo.GetDepreciationPercents(context.Background(), []string{houseType}, reportScheduleDay)
+	multiplicationByHouseType, err := s.hppRepo.GetMultiplicationPercentages(context.Background(), []string{houseType}, reportScheduleDay)
 	if err != nil {
 		return nil, err
 	}
 
-	pulletCostDayN, depreciationValue, depreciationPercent := CalculateDepreciationFromDayRange(
-		totalPulletCost,
+	pulletCostDayN, depreciationValue, multiplicationPercentage := CalculateDepreciationFromDayRange(
+		basis,
 		startDay,
 		reportScheduleDay,
 		contextRow.HouseType,
-		percentByHouseType,
+		multiplicationByHouseType,
 	)
-	if depreciationValue <= 0 {
+	if depreciationValue <= 0 && pulletCostDayN <= 0 {
 		return nil, nil
 	}
+	totalValueAfter := pulletCostDayN * multiplicationPercentage
+	depreciationPercent := (1.0 - multiplicationPercentage) * 100.0
+	_ = totalPulletCost
 
 	return &HppV2ComponentPart{
 		Code:   hppV2PartDepreciationCutover,
@@ -1449,15 +1517,19 @@ func (s *hppV2Service) buildManualCutoverDepreciationPart(
 		Scopes: []string{hppV2ScopeProductionCost},
 		Total:  depreciationValue,
 		Details: map[string]any{
-			"basis_total":           totalPulletCost,
-			"pullet_cost_day_n":     pulletCostDayN,
-			"depreciation_percent":  depreciationPercent,
-			"schedule_day":          reportScheduleDay,
-			"start_schedule_day":    startDay,
-			"origin_date":           formatDateOnly(*originDate),
-			"cutover_date":          formatDateOnly(manualInput.CutoverDate),
-			"manual_input_id":       manualInput.ID,
-			"project_flock_kandang": projectFlockKandangId,
+			"basis_total":                           basis,
+			"manual_input_total":                    manualInput.TotalCost,
+			"population_share":                      populationShare,
+			"pullet_cost_day_n":                     pulletCostDayN,
+			"multiplication_percentage":             multiplicationPercentage,
+			"total_value_pullet_after_depreciation": totalValueAfter,
+			"depreciation_percent":                  depreciationPercent,
+			"schedule_day":                          reportScheduleDay,
+			"start_schedule_day":                    startDay,
+			"origin_date":                           formatDateOnly(*originDate),
+			"cutover_date":                          formatDateOnly(manualInput.CutoverDate),
+			"manual_input_id":                       manualInput.ID,
+			"project_flock_kandang":                 projectFlockKandangId,
 		},
 		References: []HppV2Reference{
 			{
@@ -1465,7 +1537,7 @@ func (s *hppV2Service) buildManualCutoverDepreciationPart(
 				ID:           manualInput.ID,
 				Date:         formatDateOnly(manualInput.CutoverDate),
 				Qty:          1,
-				Total:        totalPulletCost,
+				Total:        manualInput.TotalCost,
 				AppliedTotal: depreciationValue,
 			},
 		},
@@ -1724,7 +1796,7 @@ func partHasScope(part *HppV2ComponentPart, scope string) bool {
 }
 
 func dateOnly(value time.Time) time.Time {
-	return time.Date(value.Year(), value.Month(), value.Day(), 0, 0, 0, 0, value.Location())
+	return time.Date(value.Year(), value.Month(), value.Day(), 0, 0, 0, 0, time.UTC)
 }
 
 func formatDateOnly(value time.Time) string {

internal/common/service/common.hppv2.service_test.go

@@ -57,6 +57,14 @@ func (s *hppV2RepoStub) GetLatestTransferInputByProjectFlockKandangID(_ context.
 	return s.latestTransferByPFK[projectFlockKandangId], nil
 }
 
+func (s *hppV2RepoStub) GetAllTransferInputsByProjectFlockKandangID(_ context.Context, projectFlockKandangId uint, _ time.Time) ([]commonRepo.HppV2LatestTransferInputRow, error) {
+	row := s.latestTransferByPFK[projectFlockKandangId]
+	if row == nil {
+		return []commonRepo.HppV2LatestTransferInputRow{}, nil
+	}
+	return []commonRepo.HppV2LatestTransferInputRow{*row}, nil
+}
+
 func (s *hppV2RepoStub) GetManualDepreciationInputByProjectFlockID(_ context.Context, projectFlockID uint) (*commonRepo.HppV2ManualDepreciationInputRow, error) {
 	return s.manualInputByProject[projectFlockID], nil
 }
@@ -93,6 +101,18 @@ func (s *hppV2RepoStub) GetDepreciationPercents(_ context.Context, houseTypes []
 	return result, nil
 }
 
+// GetMultiplicationPercentages — alias yang sama dengan GetDepreciationPercents untuk match
+// interface HppV2CostRepository (interface dipakai method name baru ini).
+func (s *hppV2RepoStub) GetMultiplicationPercentages(ctx context.Context, houseTypes []string, maxDay int) (map[string]map[int]float64, error) {
+	return s.GetDepreciationPercents(ctx, houseTypes, maxDay)
+}
+
+// GetChickinPopulationByPFKForFarm — return populasi per PFK dari satu project flock.
+// Stub minimal: return empty map (depreciation manual cutover tidak di-test di sini).
+func (s *hppV2RepoStub) GetChickinPopulationByPFKForFarm(_ context.Context, _ uint) (map[uint]float64, error) {
+	return map[uint]float64{}, nil
+}
+
 func (s *hppV2RepoStub) ListUsageCostRowsByProductFlags(_ context.Context, projectFlockKandangIDs []uint, flagNames []string, _ *time.Time) ([]commonRepo.HppV2UsageCostRow, error) {
 	return append([]commonRepo.HppV2UsageCostRow{}, s.usageRowsByKey[stubKey(projectFlockKandangIDs, flagNames)]...), nil
 }

internal/config/config.go

@@ -121,9 +121,12 @@ func init() {
 	// Redis
 	RedisURL = viper.GetString("REDIS_URL")
 
+	// TransferToLayingGrowingMaxWeek: batas umur (minggu dari chick_in) yang masih boleh ditransfer ke laying.
+	// Disatukan dengan depreciation_start_age_day = 175 hari = 25 minggu, agar konsisten antara batas transfer
+	// dan kapan depresiasi mulai berjalan.
 	TransferToLayingGrowingMaxWeek = viper.GetInt("TRANSFER_TO_LAYING_GROWING_MAX_WEEK")
 	if TransferToLayingGrowingMaxWeek <= 0 {
-		TransferToLayingGrowingMaxWeek = 19
+		TransferToLayingGrowingMaxWeek = 25
 	}
 
 	// Object storage

internal/database/migrations/20260520000001_unify_close_house_depreciation_standard.down.sql

@@ -0,0 +1,17 @@
+-- Hapus open_house dan close_house rows dengan effective_date baru
+DELETE FROM house_depreciation_standards
+WHERE house_type IN ('open_house', 'close_house') AND effective_date = '2026-05-20';
+
+-- Hapus kolom multiplication_percentage
+ALTER TABLE house_depreciation_standards DROP COLUMN multiplication_percentage;
+
+-- Invalidate snapshot cache
+DELETE FROM farm_depreciation_snapshots;
+
+-- Kembalikan unique constraint lama
+ALTER TABLE house_depreciation_standards
+    DROP CONSTRAINT house_depreciation_standards_house_type_day_eff_unique;
+
+ALTER TABLE house_depreciation_standards
+    ADD CONSTRAINT house_depreciation_standards_house_type_day_unique
+    UNIQUE (house_type, day);

internal/database/migrations/20260520000001_unify_close_house_depreciation_standard.up.sql

@@ -0,0 +1,279 @@
+-- Drop unique constraint lama (house_type, day) agar bisa support multi effective_date
+ALTER TABLE house_depreciation_standards
+    DROP CONSTRAINT house_depreciation_standards_house_type_day_unique;
+
+-- Unique baru: (house_type, day, effective_date)
+-- NULL dianggap distinct di PostgreSQL → row lama (effective_date NULL) tidak konflik dengan row baru
+ALTER TABLE house_depreciation_standards
+    ADD CONSTRAINT house_depreciation_standards_house_type_day_eff_unique
+    UNIQUE (house_type, day, effective_date);
+
+-- Tambah kolom multiplication_percentage (nilai dari baris ke-3 Excel "Depresiasi 25 week.xlsx")
+ALTER TABLE house_depreciation_standards
+    ADD COLUMN multiplication_percentage numeric(20,15) NOT NULL DEFAULT 0;
+
+-- Isi multiplication_percentage untuk semua row existing (effective_date IS NULL)
+-- Value diambil dari row 3 Excel: kolom A=day1 s/d TL=day532
+UPDATE house_depreciation_standards AS hds
+SET multiplication_percentage = v.val
+FROM (VALUES
+    (1,0.997742664),(2,0.997737557),(3,0.997732426),(4,0.997727273),(5,0.997722096),
+    (6,0.997716895),(7,0.99771167),(8,0.997706422),(9,0.997701149),(10,0.997695853),
+    (11,0.997690531),(12,0.9977),(13,0.997679814),(14,0.997674419),(15,0.998),
+    (16,0.997997998),(17,0.997993982),(18,0.99798995),(19,0.997985901),(20,0.997981837),
+    (21,0.997977755),(22,0.997635934),(23,0.997630332),(24,0.997624703),(25,0.997619048),
+    (26,0.997613365),(27,0.997607656),(28,0.997601918),(29,0.997596154),(30,0.997590361),
+    (31,0.997584541),(32,0.997578692),(33,0.997572816),(34,0.99756691),(35,0.997560976),
+    (36,0.997555012),(37,0.99754902),(38,0.997542998),(39,0.997536946),(40,0.997530864),
+    (41,0.997524752),(42,0.99751861),(43,0.997867804),(44,0.997863248),(45,0.997858672),
+    (46,0.997854077),(47,0.997849462),(48,0.997844828),(49,0.997840173),(50,0.997474747),
+    (51,0.997468354),(52,0.997461929),(53,0.997455471),(54,0.99744898),(55,0.997442455),
+    (56,0.997435897),(57,0.997429306),(58,0.99742268),(59,0.997416021),(60,0.997409326),
+    (61,0.997402597),(62,0.997395833),(63,0.997389034),(64,0.997756171),(65,0.997751124),
+    (66,0.997746056),(67,0.997740964),(68,0.997735849),(69,0.997730711),(70,0.99772555),
+    (71,0.997340426),(72,0.997333333),(73,0.997326203),(74,0.997319035),(75,0.997311828),
+    (76,0.997304582),(77,0.9972973),(78,0.99767712),(79,0.99767171),(80,0.99766628),
+    (81,0.99766082),(82,0.99765533),(83,0.99764982),(84,0.997644287),(85,0.997245179),
+    (86,0.997237569),(87,0.997229917),(88,0.997222222),(89,0.997214485),(90,0.997206704),
+    (91,0.99719888),(92,0.997191011),(93,0.997183099),(94,0.997175141),(95,0.997167139),
+    (96,0.997159091),(97,0.997150997),(98,0.997142857),(99,0.997544003),(100,0.997537957),
+    (101,0.99753188),(102,0.997525773),(103,0.997519636),(104,0.997513469),(105,0.99750727),
+    (106,0.997084548),(107,0.997076023),(108,0.997067449),(109,0.997058824),(110,0.997050147),
+    (111,0.99704142),(112,0.997032641),(113,0.99744898),(114,0.997442455),(115,0.997435897),
+    (116,0.997429306),(117,0.99742268),(118,0.997416021),(119,0.997409326),(120,0.996969697),
+    (121,0.996960486),(122,0.99695122),(123,0.996941896),(124,0.996932515),(125,0.996923077),
+    (126,0.99691358),(127,0.997346307),(128,0.997339246),(129,0.997332148),(130,0.997325011),
+    (131,0.997317836),(132,0.997310623),(133,0.997303371),(134,0.996845426),(135,0.996835443),
+    (136,0.996825397),(137,0.996815287),(138,0.996805112),(139,0.996794872),(140,0.996784566),
+    (141,0.997235023),(142,0.997227357),(143,0.997219648),(144,0.997211896),(145,0.997204101),
+    (146,0.997196262),(147,0.997188379),(148,0.996710526),(149,0.99669967),(150,0.996688742),
+    (151,0.996677741),(152,0.996666667),(153,0.996655518),(154,0.996644295),(155,0.997113997),
+    (156,0.997105644),(157,0.997097242),(158,0.997088792),(159,0.997080292),(160,0.997071742),
+    (161,0.997063142),(162,0.997054492),(163,0.99704579),(164,0.997037037),(165,0.997028232),
+    (166,0.997019374),(167,0.997010463),(168,0.997001499),(169,0.996491228),(170,0.996478873),
+    (171,0.996466431),(172,0.996453901),(173,0.996441281),(174,0.996428571),(175,0.996415771),
+    (176,0.996916752),(177,0.996907216),(178,0.996897622),(179,0.996887967),(180,0.996878252),
+    (181,0.996868476),(182,0.996858639),(183,0.996848739),(184,0.996838778),(185,0.996828753),
+    (186,0.996818664),(187,0.996808511),(188,0.996798292),(189,0.996788009),(190,0.996240602),
+    (191,0.996226415),(192,0.996212121),(193,0.996197719),(194,0.996183206),(195,0.996168582),
+    (196,0.996153846),(197,0.996690568),(198,0.996679579),(199,0.996668517),(200,0.996657382),
+    (201,0.996646171),(202,0.996634885),(203,0.996623523),(204,0.996612084),(205,0.996600567),
+    (206,0.996588971),(207,0.996577296),(208,0.996565541),(209,0.996553705),(210,0.996541787),
+    (211,0.996529786),(212,0.996517702),(213,0.996505533),(214,0.996493279),(215,0.996480938),
+    (216,0.996468511),(217,0.996455995),(218,0.996443391),(219,0.996430696),(220,0.99641791),
+    (221,0.996405033),(222,0.996392063),(223,0.996378998),(224,0.996365839),(225,0.995744681),
+    (226,0.995726496),(227,0.995708155),(228,0.995689655),(229,0.995670996),(230,0.995652174),
+    (231,0.995633188),(232,0.996240602),(233,0.996226415),(234,0.996212121),(235,0.996197719),
+    (236,0.996183206),(237,0.996168582),(238,0.996153846),(239,0.9961389960),(240,0.996124031),
+    (241,0.996108949),(242,0.99609375),(243,0.996078431),(244,0.996062992),(245,0.996047431),
+    (246,0.996031746),(247,0.996015936),(248,0.996),(249,0.995983936),(250,0.995967742),
+    (251,0.995951417),(252,0.995934959),(253,0.995918367),(254,0.995901639),(255,0.995884774),
+    (256,0.995867769),(257,0.995850622),(258,0.995833333),(259,0.9958158999),(260,0.995798319),
+    (261,0.995780591),(262,0.995762712),(263,0.995744681),(264,0.995726496),(265,0.995708155),
+    (266,0.995689655),(267,0.995670996),(268,0.995652174),(269,0.995633188),(270,0.995614035),
+    (271,0.995594714),(272,0.995575221),(273,0.995555556),(274,0.995535714),(275,0.995515695),
+    (276,0.995495495),(277,0.995475113),(278,0.995454545),(279,0.99543379),(280,0.995412844),
+    (281,0.995391705),(282,0.99537037),(283,0.995348837),(284,0.995327103),(285,0.995305164),
+    (286,0.995282919),(287,0.995260664),(288,0.996031746),(289,0.996015936),(290,0.996),
+    (291,0.995983936),(292,0.995967742),(293,0.995951417),(294,0.995934959),(295,0.995102041),
+    (296,0.995077933),(297,0.995053586),(298,0.995028998),(299,0.995004163),(300,0.994979079),
+    (301,0.994953743),(302,0.994928149),(303,0.994902294),(304,0.994876174),(305,0.994849785),
+    (306,0.994823123),(307,0.994796184),(308,0.994768963),(309,0.994741455),(310,0.994713656),
+    (311,0.994685562),(312,0.994657168),(313,0.994628469),(314,0.99459946),(315,0.994570136),
+    (316,0.994540491),(317,0.994510522),(318,0.994480221),(319,0.994449584),(320,0.994418605),
+    (321,0.994387278),(322,0.994355597),(323,0.995269631),(324,0.995247148),(325,0.995224451),
+    (326,0.995201536),(327,0.995178399),(328,0.995155039),(329,0.995131451),(330,0.994129159),
+    (331,0.994094488),(332,0.994059406),(333,0.994023904),(334,0.993987976),(335,0.993951613),
+    (336,0.993914807),(337,0.994897959),(338,0.994871795),(339,0.994845361),(340,0.994818653),
+    (341,0.994791667),(342,0.994764398),(343,0.994736842),(344,0.993650794),(345,0.993610224),
+    (346,0.993569132),(347,0.993527508),(348,0.993484342),(349,0.993442623),(350,0.99339934),
+    (351,0.993355482),(352,0.993311037),(353,0.993265993),(354,0.993220339),(355,0.993174061),
+    (356,0.993127148),(357,0.993079585),(358,0.994192799),(359,0.994158879),(360,0.994124559),
+    (361,0.994089835),(362,0.994054697),(363,0.994019139),(364,0.993983153),(365,0.992736077),
+    (366,0.992682927),(367,0.992628993),(368,0.992574257),(369,0.992518703),(370,0.992462312),
+    (371,0.992405063),(372,0.993622449),(373,0.993581515),(374,0.993540052),(375,0.993498049),
+    (376,0.993455497),(377,0.993412385),(378,0.9933687),(379,0.993324433),(380,0.99327957),
+    (381,0.9932341),(382,0.993188011),(383,0.993141289),(384,0.993093923),(385,0.993045897),
+    (386,0.991596639),(387,0.991525424),(388,0.991452991),(389,0.99137931),(390,0.991304348),
+    (391,0.99122807),(392,0.991150442),(393,0.992559524),(394,0.992503748),(395,0.99244713),
+    (396,0.99238965),(397,0.992331288),(398,0.992272025),(399,0.992211838),(400,0.992150706),
+    (401,0.992088608),(402,0.992025518),(403,0.991961415),(404,0.991896272),(405,0.991830065),
+    (406,0.991762768),(407,0.991694352),(408,0.991624791),(409,0.991554054),(410,0.991482112),
+    (411,0.991408935),(412,0.991334489),(413,0.991258741),(414,0.989417989),(415,0.989304813),
+    (416,0.989189189),(417,0.989071038),(418,0.988950276),(419,0.988826816),(420,0.988700565),
+    (421,0.99047619),(422,0.990384615),(423,0.990291262),(424,0.990196078),(425,0.99009901),
+    (426,0.99),(427,0.98989899),(428,0.989795918),(429,0.989690722),(430,0.989583333),
+    (431,0.989473684),(432,0.989361702),(433,0.989247312),(434,0.989130435),(435,0.989010989),
+    (436,0.988888889),(437,0.988764045),(438,0.988636364),(439,0.988505747),(440,0.988372093),
+    (441,0.988235294),(442,0.988095238),(443,0.987951807),(444,0.987804878),(445,0.987654321),
+    (446,0.9875),(447,0.987341772),(448,0.987179487),(449,0.987012987),(450,0.986842105),
+    (451,0.986666667),(452,0.986486486),(453,0.98630137),(454,0.986111111),(455,0.985915493),
+    (456,0.985714286),(457,0.985507246),(458,0.985294118),(459,0.985074627),(460,0.984848485),
+    (461,0.984615385),(462,0.984375),(463,0.987301587),(464,0.987138264),(465,0.986970684),
+    (466,0.98679868),(467,0.986622074),(468,0.986440678),(469,0.986254296),(470,0.982578397),
+    (471,0.982269504),(472,0.981949458),(473,0.981617647),(474,0.981273408),(475,0.980916031),
+    (476,0.980544747),(477,0.98015873),(478,0.979757085),(479,0.979338843),(480,0.978902954),
+    (481,0.978448276),(482,0.977973568),(483,0.977477477),(484,0.976958525),(485,0.976415094),
+    (486,0.975845411),(487,0.975247525),(488,0.974619289),(489,0.973958333),(490,0.973262032),
+    (491,0.978021978),(492,0.97752809),(493,0.977011494),(494,0.976470588),(495,0.975903614),
+    (496,0.975308642),(497,0.974683544),(498,0.967532468),(499,0.966442953),(500,0.965277778),
+    (501,0.964028777),(502,0.962686567),(503,0.96124031),(504,0.959677419),(505,0.966386555),
+    (506,0.965217391),(507,0.963963964),(508,0.962616822),(509,0.961165049),(510,0.95959596),
+    (511,0.957894737),(512,0.945054945),(513,0.941860465),(514,0.938271605),(515,0.934210526),
+    (516,0.929577465),(517,0.924242424),(518,0.918032787),(519,0.928571429),(520,0.923076923),
+    (521,0.916666667),(522,0.909090909),(523,0.9),(524,0.888888889),(525,0.875),
+    (526,0.857142857),(527,0.833333333),(528,0.8),(529,0.75),(530,0.666666667),
+    (531,0.5),(532,9.11e-12)
+) AS v(day_num, val)
+WHERE hds.day = v.day_num;
+
+-- Insert open_house baru dengan effective_date 2026-05-20
+-- multiplication_percentage diambil dari row existing (sudah di-UPDATE di step sebelumnya)
+INSERT INTO house_depreciation_standards
+    (house_type, day, effective_date, depreciation_percent, standard_week, name, multiplication_percentage)
+SELECT
+    'open_house'::house_type_enum,
+    day,
+    '2026-05-20'::date,
+    depreciation_percent,
+    25,
+    'Standard Open House Week 25',
+    multiplication_percentage
+FROM (
+    SELECT DISTINCT ON (day)
+        day, depreciation_percent, multiplication_percentage
+    FROM house_depreciation_standards
+    WHERE house_type = 'open_house'
+    ORDER BY day, effective_date DESC NULLS LAST
+) effective_open_house;
+
+-- Insert close_house baru: depreciation_percent dari open_house, multiplication_percentage dari Excel row 8 (close_house)
+INSERT INTO house_depreciation_standards
+    (house_type, day, effective_date, depreciation_percent, standard_week, name, multiplication_percentage)
+SELECT
+    'close_house'::house_type_enum,
+    oh.day,
+    '2026-05-20'::date,
+    oh.depreciation_percent,
+    25,
+    'Standard Close House Week 25',
+    ch.val
+FROM (
+    SELECT DISTINCT ON (day)
+        day, depreciation_percent
+    FROM house_depreciation_standards
+    WHERE house_type = 'open_house'
+    ORDER BY day, effective_date DESC NULLS LAST
+) oh
+JOIN (VALUES
+    (1,0.9981),(2,0.9981),(3,0.9981),(4,0.9981),(5,0.9981),
+    (6,0.9981),(7,0.9981),(8,0.9978),(9,0.9978),(10,0.9978),
+    (11,0.9978),(12,0.9978),(13,0.9978),(14,0.9978),(15,0.9978),
+    (16,0.9978),(17,0.9978),(18,0.9978),(19,0.9978),(20,0.9978),
+    (21,0.9978),(22,0.9981),(23,0.9981),(24,0.9981),(25,0.9981),
+    (26,0.9981),(27,0.9981),(28,0.9981),(29,0.9978),(30,0.9978),
+    (31,0.9978),(32,0.9978),(33,0.9978),(34,0.9978),(35,0.9978),
+    (36,0.9978),(37,0.9978),(38,0.9978),(39,0.9978),(40,0.9978),
+    (41,0.9978),(42,0.9978),(43,0.9978),(44,0.9978),(45,0.9978),
+    (46,0.9978),(47,0.9978),(48,0.9978),(49,0.9978),(50,0.9981),
+    (51,0.9981),(52,0.9981),(53,0.9981),(54,0.9981),(55,0.9981),
+    (56,0.9981),(57,0.9978),(58,0.9978),(59,0.9978),(60,0.9978),
+    (61,0.9978),(62,0.9978),(63,0.9978),(64,0.9978),(65,0.9978),
+    (66,0.9977),(67,0.9977),(68,0.9977),(69,0.9977),(70,0.9977),
+    (71,0.9973),(72,0.9973),(73,0.9973),(74,0.9973),(75,0.9973),
+    (76,0.9973),(77,0.9973),(78,0.9977),(79,0.9977),(80,0.9977),
+    (81,0.9977),(82,0.9977),(83,0.9976),(84,0.9976),(85,0.9972),
+    (86,0.9972),(87,0.9972),(88,0.9972),(89,0.9972),(90,0.9972),
+    (91,0.9972),(92,0.9972),(93,0.9972),(94,0.9972),(95,0.9972),
+    (96,0.9972),(97,0.9972),(98,0.9971),(99,0.9975),(100,0.9975),
+    (101,0.9975),(102,0.9975),(103,0.9975),(104,0.9975),(105,0.9975),
+    (106,0.9971),(107,0.9971),(108,0.9971),(109,0.9971),(110,0.9971),
+    (111,0.997),(112,0.997),(113,0.9974),(114,0.9974),(115,0.9974),
+    (116,0.9974),(117,0.9974),(118,0.9974),(119,0.9974),(120,0.997),
+    (121,0.997),(122,0.997),(123,0.9969),(124,0.9969),(125,0.9969),
+    (126,0.9969),(127,0.9973),(128,0.9973),(129,0.9973),(130,0.9973),
+    (131,0.9973),(132,0.9973),(133,0.9973),(134,0.9968),(135,0.9968),
+    (136,0.9968),(137,0.9968),(138,0.9968),(139,0.9968),(140,0.9968),
+    (141,0.9972),(142,0.9972),(143,0.9972),(144,0.9972),(145,0.9972),
+    (146,0.9972),(147,0.9972),(148,0.9967),(149,0.9967),(150,0.9967),
+    (151,0.9967),(152,0.9967),(153,0.9967),(154,0.9966),(155,0.9971),
+    (156,0.9971),(157,0.9971),(158,0.9971),(159,0.9971),(160,0.9971),
+    (161,0.9971),(162,0.9971),(163,0.997),(164,0.997),(165,0.997),
+    (166,0.997),(167,0.997),(168,0.997),(169,0.9965),(170,0.9965),
+    (171,0.9965),(172,0.9965),(173,0.9964),(174,0.9964),(175,0.9964),
+    (176,0.9969),(177,0.9969),(178,0.9969),(179,0.9969),(180,0.9969),
+    (181,0.9969),(182,0.9969),(183,0.9968),(184,0.9968),(185,0.9968),
+    (186,0.9968),(187,0.9968),(188,0.9968),(189,0.9968),(190,0.9962),
+    (191,0.9962),(192,0.9962),(193,0.9962),(194,0.9962),(195,0.9962),
+    (196,0.9962),(197,0.9967),(198,0.9967),(199,0.9967),(200,0.9967),
+    (201,0.9966),(202,0.9966),(203,0.9966),(204,0.9966),(205,0.9966),
+    (206,0.9966),(207,0.9966),(208,0.9966),(209,0.9966),(210,0.9965),
+    (211,0.9965),(212,0.9965),(213,0.9965),(214,0.9965),(215,0.9965),
+    (216,0.9965),(217,0.9965),(218,0.9964),(219,0.9964),(220,0.9964),
+    (221,0.9964),(222,0.9964),(223,0.9964),(224,0.9964),(225,0.9957),
+    (226,0.9957),(227,0.9957),(228,0.9957),(229,0.9957),(230,0.9957),
+    (231,0.9956),(232,0.9962),(233,0.9962),(234,0.9962),(235,0.9962),
+    (236,0.9962),(237,0.9962),(238,0.9962),(239,0.9961),(240,0.9961),
+    (241,0.9961),(242,0.9961),(243,0.9961),(244,0.9961),(245,0.996),
+    (246,0.996),(247,0.996),(248,0.996),(249,0.996),(250,0.996),
+    (251,0.996),(252,0.9959),(253,0.9959),(254,0.9959),(255,0.9959),
+    (256,0.9959),(257,0.9959),(258,0.9958),(259,0.9958),(260,0.9958),
+    (261,0.9958),(262,0.9958),(263,0.9957),(264,0.9957),(265,0.9957),
+    (266,0.9957),(267,0.9957),(268,0.9957),(269,0.9956),(270,0.9956),
+    (271,0.9956),(272,0.9956),(273,0.9956),(274,0.9955),(275,0.9955),
+    (276,0.9955),(277,0.9955),(278,0.9955),(279,0.9954),(280,0.9954),
+    (281,0.9954),(282,0.9954),(283,0.9953),(284,0.9953),(285,0.9953),
+    (286,0.9953),(287,0.9953),(288,0.996),(289,0.996),(290,0.996),
+    (291,0.996),(292,0.996),(293,0.996),(294,0.9959),(295,0.9951),
+    (296,0.9951),(297,0.9951),(298,0.995),(299,0.995),(300,0.995),
+    (301,0.995),(302,0.9949),(303,0.9949),(304,0.9949),(305,0.9948),
+    (306,0.9948),(307,0.9948),(308,0.9948),(309,0.9947),(310,0.9947),
+    (311,0.9947),(312,0.9947),(313,0.9946),(314,0.9946),(315,0.9946),
+    (316,0.9945),(317,0.9945),(318,0.9945),(319,0.9944),(320,0.9944),
+    (321,0.9944),(322,0.9944),(323,0.9953),(324,0.9952),(325,0.9952),
+    (326,0.9952),(327,0.9952),(328,0.9952),(329,0.9951),(330,0.9941),
+    (331,0.9941),(332,0.9941),(333,0.994),(334,0.994),(335,0.994),
+    (336,0.9939),(337,0.9949),(338,0.9949),(339,0.9948),(340,0.9948),
+    (341,0.9948),(342,0.9948),(343,0.9947),(344,0.9937),(345,0.9936),
+    (346,0.9936),(347,0.9935),(348,0.9935),(349,0.9934),(350,0.9934),
+    (351,0.9934),(352,0.9933),(353,0.9933),(354,0.9932),(355,0.9932),
+    (356,0.9931),(357,0.9931),(358,0.9942),(359,0.9942),(360,0.9941),
+    (361,0.9941),(362,0.9941),(363,0.994),(364,0.994),(365,0.9927),
+    (366,0.9927),(367,0.9926),(368,0.9926),(369,0.9925),(370,0.9925),
+    (371,0.9924),(372,0.9936),(373,0.9936),(374,0.9935),(375,0.9935),
+    (376,0.9935),(377,0.9934),(378,0.9934),(379,0.9933),(380,0.9933),
+    (381,0.9932),(382,0.9932),(383,0.9931),(384,0.9931),(385,0.993),
+    (386,0.9916),(387,0.9915),(388,0.9915),(389,0.9914),(390,0.9913),
+    (391,0.9912),(392,0.9912),(393,0.9926),(394,0.9925),(395,0.9924),
+    (396,0.9924),(397,0.9923),(398,0.9923),(399,0.9922),(400,0.9922),
+    (401,0.9921),(402,0.992),(403,0.992),(404,0.9919),(405,0.9918),
+    (406,0.9918),(407,0.9917),(408,0.9916),(409,0.9916),(410,0.9915),
+    (411,0.9914),(412,0.9913),(413,0.9913),(414,0.9894),(415,0.9893),
+    (416,0.9892),(417,0.9891),(418,0.989),(419,0.9888),(420,0.9887),
+    (421,0.9905),(422,0.9904),(423,0.9903),(424,0.9902),(425,0.9901),
+    (426,0.99),(427,0.9899),(428,0.9898),(429,0.9897),(430,0.9896),
+    (431,0.9895),(432,0.9894),(433,0.9892),(434,0.9891),(435,0.989),
+    (436,0.9889),(437,0.9888),(438,0.9886),(439,0.9885),(440,0.9884),
+    (441,0.9882),(442,0.9881),(443,0.988),(444,0.9878),(445,0.9877),
+    (446,0.9875),(447,0.9873),(448,0.9872),(449,0.987),(450,0.9868),
+    (451,0.9867),(452,0.9865),(453,0.9863),(454,0.9861),(455,0.9859),
+    (456,0.9857),(457,0.9855),(458,0.9853),(459,0.9851),(460,0.9848),
+    (461,0.9846),(462,0.9844),(463,0.9873),(464,0.9871),(465,0.987),
+    (466,0.9868),(467,0.9866),(468,0.9864),(469,0.9863),(470,0.9826),
+    (471,0.9823),(472,0.9819),(473,0.9816),(474,0.9813),(475,0.9809),
+    (476,0.9805),(477,0.9802),(478,0.9798),(479,0.9793),(480,0.9789),
+    (481,0.9784),(482,0.978),(483,0.9775),(484,0.977),(485,0.9764),
+    (486,0.9758),(487,0.9752),(488,0.9746),(489,0.974),(490,0.9733),
+    (491,0.978),(492,0.9775),(493,0.977),(494,0.9765),(495,0.9759),
+    (496,0.9753),(497,0.9747),(498,0.9675),(499,0.9664),(500,0.9653),
+    (501,0.964),(502,0.9627),(503,0.9612),(504,0.9597),(505,0.9664),
+    (506,0.9652),(507,0.964),(508,0.9626),(509,0.9612),(510,0.9596),
+    (511,0.9579),(512,0.9451),(513,0.9419),(514,0.9383),(515,0.9342),
+    (516,0.9296),(517,0.9242),(518,0.918),(519,0.9286),(520,0.9231),
+    (521,0.9167),(522,0.9091),(523,0.9),(524,0.8889),(525,0.875),
+    (526,0.8571),(527,0.8333),(528,0.8),(529,0.75),(530,0.6667),
+    (531,0.5),(532,0)
+) AS ch(day, val) ON oh.day = ch.day;
+
+-- Invalidate snapshot cache depreciation agar recompute dengan standard baru
+DELETE FROM farm_depreciation_snapshots;

internal/database/migrations/20260527074540_recalculate_economic_cutoff_25_weeks.down.sql

@@ -0,0 +1,22 @@
+-- Rollback: balik ke rule lama (19 minggu = 133 hari)
+
+BEGIN;
+
+UPDATE laying_transfers lt
+SET economic_cutoff_date = sub.cutoff_date,
+    updated_at = NOW()
+FROM (
+    SELECT
+        lt2.id AS transfer_id,
+        (MIN(pc.chick_in_date)::date + INTERVAL '133 days')::date AS cutoff_date
+    FROM laying_transfers lt2
+    JOIN project_chickins pc ON pc.project_flock_kandang_id = lt2.source_project_flock_kandang_id
+    WHERE lt2.deleted_at IS NULL
+      AND lt2.source_project_flock_kandang_id IS NOT NULL
+      AND pc.deleted_at IS NULL
+    GROUP BY lt2.id
+) sub
+WHERE lt.id = sub.transfer_id
+  AND lt.deleted_at IS NULL;
+
+COMMIT;

internal/database/migrations/20260527074540_recalculate_economic_cutoff_25_weeks.up.sql

@@ -0,0 +1,24 @@
+-- Recalculate laying_transfers.economic_cutoff_date dari rule 19 minggu (lama) ke 25 minggu (baru,
+-- sejalan dengan depreciation_start_age_day = 175). Semua transfer historis yang punya
+-- source_project_flock_kandang_id akan di-update agar economic_cutoff_date = source.chick_in_date + 175 hari.
+
+BEGIN;
+
+UPDATE laying_transfers lt
+SET economic_cutoff_date = sub.cutoff_date,
+    updated_at = NOW()
+FROM (
+    SELECT
+        lt2.id AS transfer_id,
+        (MIN(pc.chick_in_date)::date + INTERVAL '175 days')::date AS cutoff_date
+    FROM laying_transfers lt2
+    JOIN project_chickins pc ON pc.project_flock_kandang_id = lt2.source_project_flock_kandang_id
+    WHERE lt2.deleted_at IS NULL
+      AND lt2.source_project_flock_kandang_id IS NOT NULL
+      AND pc.deleted_at IS NULL
+    GROUP BY lt2.id
+) sub
+WHERE lt.id = sub.transfer_id
+  AND lt.deleted_at IS NULL;
+
+COMMIT;

internal/database/migrations/20260527074620_truncate_farm_depreciation_snapshots.down.sql

@@ -0,0 +1,3 @@
+-- Down migration: tidak ada cara restore TRUNCATE. Snapshot akan auto-regenerate on demand.
+-- File kosong sengaja: rollback safe karena snapshot dianggap cache yang bisa di-regenerate.
+SELECT 1;

internal/database/migrations/20260527074620_truncate_farm_depreciation_snapshots.up.sql

@@ -0,0 +1,10 @@
+-- Truncate semua farm_depreciation_snapshots agar di-recompute dengan logic baru:
+-- 1. Multi-transfer per target kandang sekarang menghasilkan multiple parts (1 per transfer)
+-- 2. Economic cutoff date sudah diupdate dari 19 minggu ke 25 minggu
+-- 3. Format `components` JSON tetap kompatibel — yang berubah adalah jumlah entries (lebih banyak
+--    untuk kandang multi-transfer)
+--
+-- Snapshot akan otomatis di-regenerate saat user request `/api/reports/expense/depreciation`
+-- untuk period yang relevan.
+
+TRUNCATE TABLE farm_depreciation_snapshots;

internal/modules/production/project_flocks/controllers/projectflock.controller.go

@@ -312,10 +312,10 @@ func (u *ProjectflockController) LookupProjectFlockKandang(c *fiber.Ctx) error {
 		mapped := warehouseDTO.ToWarehouseRelationDTO(*warehouse)
 		dtoResult.Warehouse = &mapped
 	}
-	if _, isLaying, serr := u.ProjectflockService.GetProjectFlockKandangTransferStateAtDate(c, result.Id, recordDate); serr != nil {
+	if isTransition, isLaying, serr := u.ProjectflockService.GetProjectFlockKandangTransferStateAtDate(c, result.Id, recordDate); serr != nil {
 		return serr
 	} else {
-		dtoResult.IsTransition = false
+		dtoResult.IsTransition = isTransition
 		dtoResult.IsLaying = isLaying
 	}
 	applyCutOverLayingLookupOverride(&dtoResult)
@@ -346,7 +346,7 @@ func (u *ProjectflockController) LookupProjectFlockKandang(c *fiber.Ctx) error {
 }
 
 func applyCutOverLayingLookupOverride(result *dto.ProjectFlockKandangDTO) {
-	if result == nil || result.ProjectFlock == nil || result.IsLaying || result.ChickInDate == nil {
+	if result == nil || result.ProjectFlock == nil || result.IsLaying || result.IsTransition || result.ChickInDate == nil {
 		return
 	}
 

internal/modules/production/project_flocks/services/projectflock.service.go

@@ -588,17 +588,29 @@ func (s projectflockService) GetProjectFlockKandangTransferStateAtDate(ctx *fibe
 	switch category {
 	case strings.ToUpper(string(utils.ProjectFlockCategoryGrowing)):
 		transfer, err = s.TransferLayingRepo.GetLatestApprovedBySourceKandang(ctx.Context(), projectFlockKandangID)
+		if err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return false, false, nil
+			}
+			s.Log.Errorf("Failed to resolve transfer state for project flock kandang %d: %+v", projectFlockKandangID, err)
+			return false, false, fiber.NewError(fiber.StatusInternalServerError, "Failed to resolve transfer state")
+		}
 	case strings.ToUpper(string(utils.ProjectFlockCategoryLaying)):
-		transfer, err = s.TransferLayingRepo.GetLatestApprovedByTargetKandang(ctx.Context(), projectFlockKandangID)
-	default:
-		return false, false, nil
-	}
-	if err != nil {
-		if errors.Is(err, gorm.ErrRecordNotFound) {
+		// Multi-source: target kandang bisa menerima dari multiple transfer terpisah. Pakai
+		// EARLIEST transfer (transfer_date ASC) sebagai anchor — kandang masuk transition/laying
+		// mengikuti batch pertama yang sampai.
+		allTransfers, allErr := s.TransferLayingRepo.GetAllApprovedByTargetKandang(ctx.Context(), projectFlockKandangID)
+		if allErr != nil {
+			s.Log.Errorf("Failed to resolve transfers for project flock kandang %d: %+v", projectFlockKandangID, allErr)
+			return false, false, fiber.NewError(fiber.StatusInternalServerError, "Failed to resolve transfer state")
+		}
+		if len(allTransfers) == 0 {
 			return false, false, nil
 		}
-		s.Log.Errorf("Failed to resolve transfer state for project flock kandang %d: %+v", projectFlockKandangID, err)
-		return false, false, fiber.NewError(fiber.StatusInternalServerError, "Failed to resolve transfer state")
+		// Repository ORDER BY transfer_date ASC, id ASC → [0] = earliest
+		transfer = &allTransfers[0]
+	default:
+		return false, false, nil
 	}
 	if transfer == nil {
 		return false, false, nil

internal/modules/production/recordings/services/recording.service.go

@@ -198,10 +198,22 @@ func (s recordingService) GetAll(c *fiber.Ctx, params *validation.Query) ([]enti
 	if err != nil {
 		return nil, 0, err
 	}
-	targetTransferByPFK, err := s.TransferLayingRepo.GetLatestApprovedByTargetKandangs(c.Context(), layingPFKIDs)
+	// Multi-source support: 1 target kandang bisa menerima dari multiple transfer terpisah.
+	// Untuk state evaluation (IsTransition/IsLaying), kita pakai EARLIEST transfer sebagai anchor
+	// (sesuai dengan rule "kandang masuk fase laying mengikuti batch pertama yang sampai").
+	allTransfersByTarget, err := s.TransferLayingRepo.GetAllApprovedByTargetKandangs(c.Context(), layingPFKIDs)
 	if err != nil {
 		return nil, 0, err
 	}
+	targetTransferByPFK := make(map[uint]*entity.LayingTransfer, len(allTransfersByTarget))
+	for pfkID, list := range allTransfersByTarget {
+		if len(list) == 0 {
+			continue
+		}
+		// list sudah ORDER BY transfer_date ASC, id ASC → element [0] adalah earliest
+		earliest := list[0]
+		targetTransferByPFK[pfkID] = &earliest
+	}
 	hasTargetRecordingCache := make(map[uint]bool)
 
 	cutOverChickinAvailability := make(map[uint]bool)
@@ -1292,17 +1304,29 @@ func (s *recordingService) evaluatePopulationMutationState(ctx context.Context,
 	switch category {
 	case strings.ToUpper(string(utils.ProjectFlockCategoryGrowing)):
 		transfer, err = s.TransferLayingRepo.GetLatestApprovedBySourceKandang(ctx, recording.ProjectFlockKandangId)
+		if err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return true, false, false, false, nil, time.Time{}, nil
+			}
+			s.Log.Errorf("Failed to resolve approved transfer for recording %d: %+v", recording.Id, err)
+			return true, false, false, false, nil, time.Time{}, fiber.NewError(fiber.StatusInternalServerError, "Gagal memvalidasi perubahan populasi recording")
+		}
 	case strings.ToUpper(string(utils.ProjectFlockCategoryLaying)):
-		transfer, err = s.TransferLayingRepo.GetLatestApprovedByTargetKandang(ctx, recording.ProjectFlockKandangId)
-	default:
-		return true, false, false, false, nil, time.Time{}, nil
-	}
-	if err != nil {
-		if errors.Is(err, gorm.ErrRecordNotFound) {
+		// Multi-source: target kandang bisa menerima dari multiple transfer terpisah.
+		// Pakai EARLIEST transfer (transfer_date ASC) sebagai anchor untuk state evaluation —
+		// kandang dianggap masuk transition/laying berdasarkan batch pertama yang masuk.
+		allTransfers, allErr := s.TransferLayingRepo.GetAllApprovedByTargetKandang(ctx, recording.ProjectFlockKandangId)
+		if allErr != nil {
+			s.Log.Errorf("Failed to resolve approved transfers for recording %d: %+v", recording.Id, allErr)
+			return true, false, false, false, nil, time.Time{}, fiber.NewError(fiber.StatusInternalServerError, "Gagal memvalidasi perubahan populasi recording")
+		}
+		if len(allTransfers) == 0 {
 			return true, false, false, false, nil, time.Time{}, nil
 		}
-		s.Log.Errorf("Failed to resolve approved transfer for recording %d: %+v", recording.Id, err)
-		return true, false, false, false, nil, time.Time{}, fiber.NewError(fiber.StatusInternalServerError, "Gagal memvalidasi perubahan populasi recording")
+		// Repository sudah ORDER BY transfer_date ASC, id ASC → element [0] adalah earliest.
+		transfer = &allTransfers[0]
+	default:
+		return true, false, false, false, nil, time.Time{}, nil
 	}
 	if transfer == nil {
 		return true, false, false, false, nil, time.Time{}, nil

internal/modules/production/transfer_layings/repositories/laying_transfer.repository.go

@@ -19,6 +19,11 @@ type TransferLayingRepository interface {
 	GetLatestApprovedByTargetKandang(ctx context.Context, targetProjectFlockKandangID uint) (*entity.LayingTransfer, error)
 	GetLatestApprovedBySourceKandangs(ctx context.Context, pfkIDs []uint) (map[uint]*entity.LayingTransfer, error)
 	GetLatestApprovedByTargetKandangs(ctx context.Context, pfkIDs []uint) (map[uint]*entity.LayingTransfer, error)
+	// GetAllApprovedByTargetKandang return semua approved transfer yang menuju ke target kandang itu.
+	// Dipakai untuk multi-source case di mana 1 target kandang bisa menerima dari multiple transfer
+	// terpisah (tiap transfer = 1 source). Order: transfer_date ASC, id ASC (kronologis).
+	GetAllApprovedByTargetKandang(ctx context.Context, targetProjectFlockKandangID uint) ([]entity.LayingTransfer, error)
+	GetAllApprovedByTargetKandangs(ctx context.Context, pfkIDs []uint) (map[uint][]entity.LayingTransfer, error)
 
 	// Tambah method baru untuk query dengan filter lengkap
 	GetAllWithFilters(ctx context.Context, offset int, limit int, params *GetAllFilterParams) ([]entity.LayingTransfer, int64, error)
@@ -362,3 +367,89 @@ func (r *TransferLayingRepositoryImpl) GetLatestApprovedByTargetKandangs(ctx con
 	}
 	return result, nil
 }
+
+// GetAllApprovedByTargetKandang return SEMUA approved transfer ke target kandang itu (bukan hanya yang
+// terbaru). Dipakai untuk skenario multi-source di mana 1 target kandang menerima dari multiple transfer
+// terpisah, sehingga depresiasi/HPP/recording state perlu aggregate dari semua transfer.
+func (r *TransferLayingRepositoryImpl) GetAllApprovedByTargetKandang(ctx context.Context, targetProjectFlockKandangID uint) ([]entity.LayingTransfer, error) {
+	if targetProjectFlockKandangID == 0 {
+		return nil, nil
+	}
+
+	var transfers []entity.LayingTransfer
+	err := r.db.WithContext(ctx).
+		Model(&entity.LayingTransfer{}).
+		Joins("JOIN laying_transfer_targets ltt ON ltt.laying_transfer_id = laying_transfers.id AND ltt.deleted_at IS NULL").
+		Where("ltt.target_project_flock_kandang_id = ?", targetProjectFlockKandangID).
+		Where("laying_transfers.deleted_at IS NULL").
+		Where(`(
+			SELECT a.action
+			FROM approvals a
+			WHERE a.approvable_type = ?
+			  AND a.approvable_id = laying_transfers.id
+			ORDER BY a.id DESC
+			LIMIT 1
+		) = ?`, string(utils.ApprovalWorkflowTransferToLaying), entity.ApprovalActionApproved).
+		Order("laying_transfers.transfer_date ASC, laying_transfers.id ASC").
+		Distinct("laying_transfers.*").
+		Find(&transfers).Error
+	if err != nil {
+		return nil, err
+	}
+	return transfers, nil
+}
+
+// GetAllApprovedByTargetKandangs batch version: return map dari target_pfk_id ke list of approved transfers.
+// Order per target: transfer_date ASC, id ASC.
+func (r *TransferLayingRepositoryImpl) GetAllApprovedByTargetKandangs(ctx context.Context, pfkIDs []uint) (map[uint][]entity.LayingTransfer, error) {
+	result := make(map[uint][]entity.LayingTransfer)
+	if len(pfkIDs) == 0 {
+		return result, nil
+	}
+
+	type targetTransferRow struct {
+		TargetPFKID uint `gorm:"column:target_pfk_id"`
+		TransferID  uint `gorm:"column:transfer_id"`
+	}
+
+	var rows []targetTransferRow
+	err := r.db.WithContext(ctx).Raw(`
+		SELECT ltt.target_project_flock_kandang_id AS target_pfk_id, ltt.laying_transfer_id AS transfer_id
+		FROM laying_transfer_targets ltt
+		JOIN laying_transfers t ON t.id = ltt.laying_transfer_id AND t.deleted_at IS NULL
+		WHERE ltt.target_project_flock_kandang_id IN ?
+		  AND ltt.deleted_at IS NULL
+		  AND (
+		      SELECT a.action FROM approvals a
+		      WHERE a.approvable_type = ? AND a.approvable_id = t.id
+		      ORDER BY a.id DESC LIMIT 1
+		  ) = ?
+		ORDER BY t.transfer_date ASC, t.id ASC
+	`,
+		pfkIDs, string(utils.ApprovalWorkflowTransferToLaying), string(entity.ApprovalActionApproved),
+	).Scan(&rows).Error
+	if err != nil {
+		return nil, err
+	}
+	if len(rows) == 0 {
+		return result, nil
+	}
+
+	transferIDs := make([]uint, 0, len(rows))
+	targetsByTransfer := make(map[uint][]uint, len(rows))
+	for _, row := range rows {
+		transferIDs = append(transferIDs, row.TransferID)
+		targetsByTransfer[row.TransferID] = append(targetsByTransfer[row.TransferID], row.TargetPFKID)
+	}
+
+	var transfers []entity.LayingTransfer
+	if err := r.db.WithContext(ctx).Where("id IN ? AND deleted_at IS NULL", transferIDs).Order("transfer_date ASC, id ASC").Find(&transfers).Error; err != nil {
+		return nil, err
+	}
+	for i := range transfers {
+		for _, targetID := range targetsByTransfer[transfers[i].Id] {
+			result[targetID] = append(result[targetID], transfers[i])
+		}
+	}
+	return result, nil
+}

internal/modules/production/transfer_layings/services/transfer_laying.service.go

@@ -1617,6 +1617,13 @@ func (s *transferLayingService) validateKandangOwnership(
 	return nil
 }
 
+// validateTargetSourceLineage memvalidasi bahwa source kandang yang sama TIDAK boleh ditransfer 2x ke
+// target kandang yang sama (anti-duplicate pair). Aturan lama "satu target hanya boleh punya satu
+// source" sudah dihapus — sekarang 1 target boleh menerima dari multiple source kandang via transfer
+// terpisah (multi-source via N-call approach).
+//
+// Yang ditolak: kalau ada approved transfer lain (id != excludeTransferID) yang punya pair
+// (source = sourceProjectFlockKandangID, target ∈ targetKandangIDs) yang sama.
 func (s *transferLayingService) validateTargetSourceLineage(
 	ctx context.Context,
 	sourceProjectFlockKandangID uint,
@@ -1637,7 +1644,7 @@ func (s *transferLayingService) validateTargetSourceLineage(
 		}
 		seen[targetKandangID] = struct{}{}
 
-		existingTransfer, err := s.Repository.GetLatestApprovedByTargetKandang(ctx, targetKandangID)
+		existingTransfers, err := s.Repository.GetAllApprovedByTargetKandang(ctx, targetKandangID)
 		if err != nil {
 			if errors.Is(err, gorm.ErrRecordNotFound) {
 				continue
@@ -1645,47 +1652,49 @@ func (s *transferLayingService) validateTargetSourceLineage(
 			s.Log.Errorf("Failed to validate transfer lineage for target kandang %d: %+v", targetKandangID, err)
 			return fiber.NewError(fiber.StatusInternalServerError, "Gagal memvalidasi relasi sumber transfer ke laying")
 		}
-		if existingTransfer == nil {
-			continue
-		}
-		if excludeTransferID != 0 && existingTransfer.Id == excludeTransferID {
-			continue
-		}
 
-		existingSourceID := uint(0)
-		if existingTransfer.SourceProjectFlockKandangId != nil && *existingTransfer.SourceProjectFlockKandangId != 0 {
-			existingSourceID = *existingTransfer.SourceProjectFlockKandangId
-		}
-		if existingSourceID == 0 && s.LayingTransferSourceRepo != nil {
-			sources, sourceErr := s.LayingTransferSourceRepo.GetByLayingTransferId(ctx, existingTransfer.Id)
-			if sourceErr != nil {
-				s.Log.Errorf("Failed to resolve transfer sources for lineage validation transfer=%d: %+v", existingTransfer.Id, sourceErr)
-				return fiber.NewError(fiber.StatusInternalServerError, "Gagal memvalidasi relasi sumber transfer ke laying")
+		for i := range existingTransfers {
+			existingTransfer := &existingTransfers[i]
+			if excludeTransferID != 0 && existingTransfer.Id == excludeTransferID {
+				continue
 			}
-			for _, source := range sources {
-				if source.SourceProjectFlockKandangId != 0 {
-					existingSourceID = source.SourceProjectFlockKandangId
-					break
+
+			// Source di header (single source of truth per migration 20260307130342).
+			existingSourceID := uint(0)
+			if existingTransfer.SourceProjectFlockKandangId != nil && *existingTransfer.SourceProjectFlockKandangId != 0 {
+				existingSourceID = *existingTransfer.SourceProjectFlockKandangId
+			}
+
+			// Fallback ke laying_transfer_sources untuk transfer yang belum punya source di header
+			// (historis pre-migration 20260307130342).
+			if existingSourceID == 0 && s.LayingTransferSourceRepo != nil {
+				sources, sourceErr := s.LayingTransferSourceRepo.GetByLayingTransferId(ctx, existingTransfer.Id)
+				if sourceErr != nil {
+					s.Log.Errorf("Failed to resolve transfer sources for lineage validation transfer=%d: %+v", existingTransfer.Id, sourceErr)
+					return fiber.NewError(fiber.StatusInternalServerError, "Gagal memvalidasi relasi sumber transfer ke laying")
+				}
+				for _, source := range sources {
+					if source.SourceProjectFlockKandangId == sourceProjectFlockKandangID {
+						existingSourceID = source.SourceProjectFlockKandangId
+						break
+					}
 				}
 			}
-		}
-		if existingSourceID == 0 {
-			continue
-		}
-		if existingSourceID == sourceProjectFlockKandangID {
-			continue
-		}
 
-		return fiber.NewError(
-			fiber.StatusBadRequest,
-			fmt.Sprintf(
-				"Kandang tujuan %d sudah memiliki lineage sumber kandang %d dari transfer %s. Tidak boleh ganti ke sumber kandang %d.",
-				targetKandangID,
-				existingSourceID,
-				existingTransfer.TransferNumber,
-				sourceProjectFlockKandangID,
-			),
-		)
+			if existingSourceID != sourceProjectFlockKandangID {
+				continue
+			}
+
+			return fiber.NewError(
+				fiber.StatusBadRequest,
+				fmt.Sprintf(
+					"Source kandang %d sudah pernah ditransfer ke target kandang %d via transfer %s. Tidak boleh duplikat (source, target) pair yang sama.",
+					sourceProjectFlockKandangID,
+					targetKandangID,
+					existingTransfer.TransferNumber,
+				),
+			)
+		}
 	}
 
 	return nil

internal/modules/repports/controllers/repport.balance_monitoring.export.go

@@ -0,0 +1,286 @@
+package controller
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/gofiber/fiber/v2"
+	"github.com/xuri/excelize/v2"
+	"gitlab.com/mbugroup/lti-api.git/internal/modules/repports/dto"
+)
+
+func isBalanceMonitoringExcelExportRequest(c *fiber.Ctx) bool {
+	return strings.EqualFold(strings.TrimSpace(c.Query("export")), "excel")
+}
+
+func exportBalanceMonitoringExcel(c *fiber.Ctx, items []dto.BalanceMonitoringRowDTO, totals dto.BalanceMonitoringTotalsDTO) error {
+	content, err := buildBalanceMonitoringWorkbook(items, totals)
+	if err != nil {
+		return fiber.NewError(fiber.StatusInternalServerError, "failed to generate excel file")
+	}
+
+	filename := fmt.Sprintf("laporan-balance-monitoring-%s.xlsx", time.Now().Format("2006-01-02-1504"))
+	c.Set("Content-Type", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
+	c.Set("Content-Disposition", fmt.Sprintf(`attachment; filename="%s"`, filename))
+	return c.Status(fiber.StatusOK).Send(content)
+}
+
+func buildBalanceMonitoringWorkbook(items []dto.BalanceMonitoringRowDTO, totals dto.BalanceMonitoringTotalsDTO) ([]byte, error) {
+	file := excelize.NewFile()
+	defer file.Close()
+
+	const sheet = "Balance Monitoring"
+	defaultSheet := file.GetSheetName(file.GetActiveSheetIndex())
+	if defaultSheet != sheet {
+		if err := file.SetSheetName(defaultSheet, sheet); err != nil {
+			return nil, err
+		}
+	}
+
+	if err := setBalanceMonitoringColumns(file, sheet); err != nil {
+		return nil, err
+	}
+	if err := setBalanceMonitoringHeaders(file, sheet); err != nil {
+		return nil, err
+	}
+	if err := writeBalanceMonitoringRows(file, sheet, items, totals); err != nil {
+		return nil, err
+	}
+	if err := file.SetPanes(sheet, &excelize.Panes{
+		Freeze:      true,
+		YSplit:      2,
+		TopLeftCell: "A3",
+		ActivePane:  "bottomLeft",
+	}); err != nil {
+		return nil, err
+	}
+
+	buf, err := file.WriteToBuffer()
+	if err != nil {
+		return nil, err
+	}
+	return buf.Bytes(), nil
+}
+
+var bmColumnWidths = map[string]float64{
+	"A": 5,
+	"B": 28,
+	"C": 18,
+	"D": 12,
+	"E": 12,
+	"F": 20,
+	"G": 12,
+	"H": 12,
+	"I": 20,
+	"J": 20,
+	"K": 18,
+	"L": 12,
+	"M": 16,
+	"N": 20,
+}
+
+func setBalanceMonitoringColumns(file *excelize.File, sheet string) error {
+	for col, width := range bmColumnWidths {
+		if err := file.SetColWidth(sheet, col, col, width); err != nil {
+			return err
+		}
+	}
+	if err := file.SetRowHeight(sheet, 1, 24); err != nil {
+		return err
+	}
+	return file.SetRowHeight(sheet, 2, 24)
+}
+
+func setBalanceMonitoringHeaders(file *excelize.File, sheet string) error {
+	borderStyle := []excelize.Border{
+		{Type: "left", Color: "000000", Style: 1},
+		{Type: "top", Color: "000000", Style: 1},
+		{Type: "bottom", Color: "000000", Style: 1},
+		{Type: "right", Color: "000000", Style: 1},
+	}
+	headerStyle, err := file.NewStyle(&excelize.Style{
+		Font: &excelize.Font{Bold: true, Color: "FFFFFF", Family: "Arial", Size: 10},
+		Fill: excelize.Fill{Type: "pattern", Pattern: 1, Color: []string{"4472C4"}},
+		Alignment: &excelize.Alignment{
+			Horizontal: "center",
+			Vertical:   "center",
+			WrapText:   true,
+		},
+		Border: borderStyle,
+	})
+	if err != nil {
+		return err
+	}
+
+	// Single-column headers: merge rows 1 and 2 vertically
+	singleColHeaders := map[string]string{
+		"A": "No",
+		"B": "Customer",
+		"C": "Saldo Awal",
+		"J": "Penjualan Trading",
+		"K": "Pembayaran",
+		"L": "Aging",
+		"M": "Aging Rata-Rata",
+		"N": "Saldo Akhir",
+	}
+	for col, header := range singleColHeaders {
+		if err := file.SetCellValue(sheet, col+"1", header); err != nil {
+			return err
+		}
+		if err := file.MergeCell(sheet, col+"1", col+"2"); err != nil {
+			return err
+		}
+	}
+
+	// Group headers: merge columns horizontally in row 1
+	if err := file.SetCellValue(sheet, "D1", "Penjualan Ayam"); err != nil {
+		return err
+	}
+	if err := file.MergeCell(sheet, "D1", "F1"); err != nil {
+		return err
+	}
+	if err := file.SetCellValue(sheet, "G1", "Penjualan Telur"); err != nil {
+		return err
+	}
+	if err := file.MergeCell(sheet, "G1", "I1"); err != nil {
+		return err
+	}
+
+	// Sub-column headers in row 2
+	subHeaders := map[string]string{
+		"D": "Ekor",
+		"E": "Kg",
+		"F": "Nominal",
+		"G": "Butir",
+		"H": "Kg",
+		"I": "Nominal",
+	}
+	for col, header := range subHeaders {
+		if err := file.SetCellValue(sheet, col+"2", header); err != nil {
+			return err
+		}
+	}
+
+	return file.SetCellStyle(sheet, "A1", "N2", headerStyle)
+}
+
+func writeBalanceMonitoringRows(file *excelize.File, sheet string, items []dto.BalanceMonitoringRowDTO, totals dto.BalanceMonitoringTotalsDTO) error {
+	borderStyle := []excelize.Border{
+		{Type: "left", Color: "000000", Style: 1},
+		{Type: "top", Color: "000000", Style: 1},
+		{Type: "bottom", Color: "000000", Style: 1},
+		{Type: "right", Color: "000000", Style: 1},
+	}
+
+	dataStyle, err := file.NewStyle(&excelize.Style{
+		Font:      &excelize.Font{Color: "000000", Family: "Arial", Size: 10},
+		Alignment: &excelize.Alignment{Vertical: "center", WrapText: true},
+		Border:    borderStyle,
+	})
+	if err != nil {
+		return err
+	}
+
+	totalStyle, err := file.NewStyle(&excelize.Style{
+		Font:      &excelize.Font{Bold: true, Color: "000000", Family: "Arial", Size: 10},
+		Fill:      excelize.Fill{Type: "pattern", Pattern: 1, Color: []string{"E2EFDA"}},
+		Alignment: &excelize.Alignment{Vertical: "center", WrapText: true},
+		Border:    borderStyle,
+	})
+	if err != nil {
+		return err
+	}
+
+	redDataStyle, err := file.NewStyle(&excelize.Style{
+		Font:      &excelize.Font{Color: "FF0000", Family: "Arial", Size: 10},
+		Alignment: &excelize.Alignment{Vertical: "center", WrapText: true},
+		Border:    borderStyle,
+	})
+	if err != nil {
+		return err
+	}
+
+	redTotalStyle, err := file.NewStyle(&excelize.Style{
+		Font:      &excelize.Font{Bold: true, Color: "FF0000", Family: "Arial", Size: 10},
+		Fill:      excelize.Fill{Type: "pattern", Pattern: 1, Color: []string{"E2EFDA"}},
+		Alignment: &excelize.Alignment{Vertical: "center", WrapText: true},
+		Border:    borderStyle,
+	})
+	if err != nil {
+		return err
+	}
+
+	for i, row := range items {
+		rowNum := i + 3
+		rowStr := strconv.Itoa(rowNum)
+
+		cells := map[string]interface{}{
+			"A": i + 1,
+			"B": row.Customer.Name,
+			"C": row.SaldoAwal,
+			"D": row.PenjualanAyam.Ekor,
+			"E": row.PenjualanAyam.Kg,
+			"F": row.PenjualanAyam.Nominal,
+			"G": row.PenjualanTelur.Butir,
+			"H": row.PenjualanTelur.Kg,
+			"I": row.PenjualanTelur.Nominal,
+			"J": row.PenjualanTrading.Nominal,
+			"K": row.Pembayaran,
+			"L": fmt.Sprintf("%d hari", row.Aging),
+			"M": formatBMAging(row.AgingRataRata),
+			"N": row.SaldoAkhir,
+		}
+		for col, val := range cells {
+			if err := file.SetCellValue(sheet, col+rowStr, val); err != nil {
+				return err
+			}
+		}
+		if err := file.SetCellStyle(sheet, "A"+rowStr, "N"+rowStr, dataStyle); err != nil {
+			return err
+		}
+		if row.SaldoAkhir < 0 {
+			if err := file.SetCellStyle(sheet, "N"+rowStr, "N"+rowStr, redDataStyle); err != nil {
+				return err
+			}
+		}
+	}
+
+	// Totals row
+	totalRowStr := strconv.Itoa(len(items) + 3)
+	totalCells := map[string]interface{}{
+		"A": "Total",
+		"C": totals.SaldoAwal,
+		"D": totals.PenjualanAyam.Ekor,
+		"E": totals.PenjualanAyam.Kg,
+		"F": totals.PenjualanAyam.Nominal,
+		"G": totals.PenjualanTelur.Butir,
+		"H": totals.PenjualanTelur.Kg,
+		"I": totals.PenjualanTelur.Nominal,
+		"J": totals.PenjualanTrading.Nominal,
+		"K": totals.Pembayaran,
+		"N": totals.SaldoAkhir,
+	}
+	for col, val := range totalCells {
+		if err := file.SetCellValue(sheet, col+totalRowStr, val); err != nil {
+			return err
+		}
+	}
+	if err := file.SetCellStyle(sheet, "A"+totalRowStr, "N"+totalRowStr, totalStyle); err != nil {
+		return err
+	}
+	if totals.SaldoAkhir < 0 {
+		if err := file.SetCellStyle(sheet, "N"+totalRowStr, "N"+totalRowStr, redTotalStyle); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func formatBMAging(v float64) string {
+	s := strconv.FormatFloat(v, 'f', 2, 64)
+	s = strings.ReplaceAll(s, ".", ",")
+	return s + " hari"
+}

internal/modules/repports/controllers/repport.controller.go

@@ -324,6 +324,13 @@ func (c *RepportController) GetPurchaseSupplier(ctx *fiber.Ctx) error {
 		return err
 	}
 
+	if isPurchaseSupplierExcelExportRequest(ctx) {
+		return exportPurchaseSupplierExcel(ctx, result)
+	}
+	if isPurchaseSupplierExcelAllExportRequest(ctx) {
+		return exportPurchaseSupplierExcelAll(ctx, result)
+	}
+
 	filters := map[string]interface{}{
 		"area_id":             query.AreaIDs,
 		"supplier_id":         query.SupplierIDs,
@@ -555,6 +562,10 @@ func (c *RepportController) GetBalanceMonitoring(ctx *fiber.Ctx) error {
 		return err
 	}
 
+	if isBalanceMonitoringExcelExportRequest(ctx) {
+		return exportBalanceMonitoringExcel(ctx, result, totals)
+	}
+
 	limit := query.Limit
 	if limit < 1 {
 		limit = 10

internal/modules/repports/controllers/repport.purchase_supplier.export.go

@@ -0,0 +1,415 @@
+package controller
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/gofiber/fiber/v2"
+	"github.com/xuri/excelize/v2"
+	"gitlab.com/mbugroup/lti-api.git/internal/modules/repports/dto"
+)
+
+func isPurchaseSupplierExcelExportRequest(c *fiber.Ctx) bool {
+	return strings.EqualFold(strings.TrimSpace(c.Query("export")), "excel")
+}
+
+func isPurchaseSupplierExcelAllExportRequest(c *fiber.Ctx) bool {
+	return strings.EqualFold(strings.TrimSpace(c.Query("export")), "excel-all")
+}
+
+func exportPurchaseSupplierExcel(c *fiber.Ctx, items []dto.PurchaseSupplierDTO) error {
+	content, err := buildPurchaseSupplierWorkbook(items)
+	if err != nil {
+		return fiber.NewError(fiber.StatusInternalServerError, "failed to generate excel file")
+	}
+
+	filename := fmt.Sprintf("laporan-pembelian-supplier-%s.xlsx", time.Now().Format("2006-01-02-1504"))
+	c.Set("Content-Type", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
+	c.Set("Content-Disposition", fmt.Sprintf(`attachment; filename="%s"`, filename))
+	return c.Status(fiber.StatusOK).Send(content)
+}
+
+func exportPurchaseSupplierExcelAll(c *fiber.Ctx, items []dto.PurchaseSupplierDTO) error {
+	content, err := buildPurchaseSupplierAllWorkbook(items)
+	if err != nil {
+		return fiber.NewError(fiber.StatusInternalServerError, "failed to generate excel file")
+	}
+
+	filename := fmt.Sprintf("laporan-pembelian-supplier-all-%s.xlsx", time.Now().Format("2006-01-02-1504"))
+	c.Set("Content-Type", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
+	c.Set("Content-Disposition", fmt.Sprintf(`attachment; filename="%s"`, filename))
+	return c.Status(fiber.StatusOK).Send(content)
+}
+
+// buildPurchaseSupplierWorkbook creates a workbook with one sheet per supplier.
+func buildPurchaseSupplierWorkbook(items []dto.PurchaseSupplierDTO) ([]byte, error) {
+	file := excelize.NewFile()
+	defer file.Close()
+
+	defaultSheet := file.GetSheetName(file.GetActiveSheetIndex())
+
+	if len(items) == 0 {
+		if err := writePurchaseSupplierSheet(file, defaultSheet, dto.PurchaseSupplierDTO{}); err != nil {
+			return nil, err
+		}
+		buf, err := file.WriteToBuffer()
+		if err != nil {
+			return nil, err
+		}
+		return buf.Bytes(), nil
+	}
+
+	for idx, item := range items {
+		sheetName := sanitizePurchaseSupplierSheetName(purchaseSupplierName(item))
+		if sheetName == "" {
+			sheetName = fmt.Sprintf("Supplier %d", idx+1)
+		}
+
+		if idx == 0 {
+			if defaultSheet != sheetName {
+				if err := file.SetSheetName(defaultSheet, sheetName); err != nil {
+					return nil, err
+				}
+			}
+		} else {
+			if _, err := file.NewSheet(sheetName); err != nil {
+				return nil, err
+			}
+		}
+
+		if err := writePurchaseSupplierSheet(file, sheetName, item); err != nil {
+			return nil, err
+		}
+	}
+
+	buf, err := file.WriteToBuffer()
+	if err != nil {
+		return nil, err
+	}
+	return buf.Bytes(), nil
+}
+
+// buildPurchaseSupplierAllWorkbook creates a single-sheet workbook with all suppliers.
+func buildPurchaseSupplierAllWorkbook(items []dto.PurchaseSupplierDTO) ([]byte, error) {
+	file := excelize.NewFile()
+	defer file.Close()
+
+	const sheet = "Rekap Pembelian Supplier"
+	defaultSheet := file.GetSheetName(file.GetActiveSheetIndex())
+	if defaultSheet != sheet {
+		if err := file.SetSheetName(defaultSheet, sheet); err != nil {
+			return nil, err
+		}
+	}
+
+	if err := setPurchaseSupplierAllColumns(file, sheet); err != nil {
+		return nil, err
+	}
+	if err := setPurchaseSupplierAllHeaders(file, sheet); err != nil {
+		return nil, err
+	}
+	if err := writePurchaseSupplierAllRows(file, sheet, items); err != nil {
+		return nil, err
+	}
+	if err := file.SetPanes(sheet, &excelize.Panes{
+		Freeze:      true,
+		YSplit:      1,
+		TopLeftCell: "A2",
+		ActivePane:  "bottomLeft",
+	}); err != nil {
+		return nil, err
+	}
+
+	buf, err := file.WriteToBuffer()
+	if err != nil {
+		return nil, err
+	}
+	return buf.Bytes(), nil
+}
+
+var purchaseSupplierSheetHeaders = []string{
+	"No",
+	"Tanggal Terima",
+	"Tanggal PO",
+	"No. Referensi",
+	"Nama Produk",
+	"Tujuan",
+	"QTY",
+	"Harga Beli (Rp)",
+	"Value Harga Beli (Rp)",
+	"Transport (Rp)",
+	"Value Transport (Rp)",
+	"Jumlah (Rp)",
+	"Ekspedisi",
+	"Surat Jalan",
+}
+
+var purchaseSupplierAllSheetHeaders = append([]string{"Supplier"}, purchaseSupplierSheetHeaders...)
+
+var purchaseSupplierSheetColumnWidths = map[string]float64{
+	"A": 5,
+	"B": 14,
+	"C": 12,
+	"D": 16,
+	"E": 20,
+	"F": 20,
+	"G": 10,
+	"H": 20,
+	"I": 20,
+	"J": 22,
+	"K": 22,
+	"L": 16,
+	"M": 20,
+	"N": 20,
+}
+
+var purchaseSupplierAllSheetColumnWidths = map[string]float64{
+	"A": 24,
+	"B": 6,
+	"C": 14,
+	"D": 12,
+	"E": 16,
+	"F": 20,
+	"G": 20,
+	"H": 10,
+	"I": 20,
+	"J": 20,
+	"K": 22,
+	"L": 22,
+	"M": 16,
+	"N": 20,
+	"O": 20,
+}
+
+func writePurchaseSupplierSheet(file *excelize.File, sheet string, item dto.PurchaseSupplierDTO) error {
+	for col, width := range purchaseSupplierSheetColumnWidths {
+		if err := file.SetColWidth(sheet, col, col, width); err != nil {
+			return err
+		}
+	}
+
+	for i, h := range purchaseSupplierSheetHeaders {
+		col, _ := excelize.ColumnNumberToName(i + 1)
+		if err := file.SetCellValue(sheet, col+"1", h); err != nil {
+			return err
+		}
+	}
+
+	for i, row := range item.Rows {
+		rowNum := i + 2
+		rowStr := fmt.Sprintf("%d", rowNum)
+
+		values := purchaseSupplierRowCells(row, i+1)
+		for colIdx, val := range values {
+			col, _ := excelize.ColumnNumberToName(colIdx + 1)
+			if err := file.SetCellValue(sheet, col+rowStr, val); err != nil {
+				return err
+			}
+		}
+	}
+
+	// Summary row
+	totalRowNum := len(item.Rows) + 2
+	totalRowStr := fmt.Sprintf("%d", totalRowNum)
+	totalCells := map[string]interface{}{
+		"A": "Total",
+		"G": item.Summary.TotalQty,
+		"H": item.Summary.TotalUnitPrice,
+		"I": item.Summary.TotalPurchaseValue,
+		"J": item.Summary.TotalTransportUnitPrice,
+		"K": item.Summary.TotalTransportValue,
+		"L": item.Summary.TotalAmount,
+	}
+	for col, val := range totalCells {
+		if err := file.SetCellValue(sheet, col+totalRowStr, val); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func setPurchaseSupplierAllColumns(file *excelize.File, sheet string) error {
+	for col, width := range purchaseSupplierAllSheetColumnWidths {
+		if err := file.SetColWidth(sheet, col, col, width); err != nil {
+			return err
+		}
+	}
+	if err := file.SetRowHeight(sheet, 1, 24); err != nil {
+		return err
+	}
+	return nil
+}
+
+func setPurchaseSupplierAllHeaders(file *excelize.File, sheet string) error {
+	headerStyle, err := file.NewStyle(&excelize.Style{
+		Font: &excelize.Font{Bold: true, Color: "FFFFFF", Family: "Arial", Size: 10},
+		Fill: excelize.Fill{Type: "pattern", Pattern: 1, Color: []string{"4472C4"}},
+		Alignment: &excelize.Alignment{
+			Horizontal: "center",
+			Vertical:   "center",
+			WrapText:   true,
+		},
+		Border: []excelize.Border{
+			{Type: "left", Color: "000000", Style: 1},
+			{Type: "top", Color: "000000", Style: 1},
+			{Type: "bottom", Color: "000000", Style: 1},
+			{Type: "right", Color: "000000", Style: 1},
+		},
+	})
+	if err != nil {
+		return err
+	}
+
+	for i, h := range purchaseSupplierAllSheetHeaders {
+		col, _ := excelize.ColumnNumberToName(i + 1)
+		if err := file.SetCellValue(sheet, col+"1", h); err != nil {
+			return err
+		}
+	}
+
+	lastCol, _ := excelize.ColumnNumberToName(len(purchaseSupplierAllSheetHeaders))
+	return file.SetCellStyle(sheet, "A1", lastCol+"1", headerStyle)
+}
+
+func writePurchaseSupplierAllRows(file *excelize.File, sheet string, items []dto.PurchaseSupplierDTO) error {
+	borderStyle := []excelize.Border{
+		{Type: "left", Color: "000000", Style: 1},
+		{Type: "top", Color: "000000", Style: 1},
+		{Type: "bottom", Color: "000000", Style: 1},
+		{Type: "right", Color: "000000", Style: 1},
+	}
+
+	dataStyle, err := file.NewStyle(&excelize.Style{
+		Font:      &excelize.Font{Color: "000000", Family: "Arial", Size: 10},
+		Alignment: &excelize.Alignment{Vertical: "center", WrapText: true},
+		Border:    borderStyle,
+	})
+	if err != nil {
+		return err
+	}
+
+	totalStyle, err := file.NewStyle(&excelize.Style{
+		Font:      &excelize.Font{Bold: true, Color: "000000", Family: "Arial", Size: 10},
+		Fill:      excelize.Fill{Type: "pattern", Pattern: 1, Color: []string{"E2EFDA"}},
+		Alignment: &excelize.Alignment{Vertical: "center", WrapText: true},
+		Border:    borderStyle,
+	})
+	if err != nil {
+		return err
+	}
+
+	lastHeaderCol, _ := excelize.ColumnNumberToName(len(purchaseSupplierAllSheetHeaders))
+
+	currentRow := 2
+	for _, item := range items {
+		supplierName := purchaseSupplierName(item)
+
+		// Data rows
+		for seq, row := range item.Rows {
+			rowStr := fmt.Sprintf("%d", currentRow)
+			if err := file.SetCellValue(sheet, "A"+rowStr, supplierName); err != nil {
+				return err
+			}
+			values := purchaseSupplierRowCells(row, seq+1)
+			for colIdx, val := range values {
+				col, _ := excelize.ColumnNumberToName(colIdx + 2)
+				if err := file.SetCellValue(sheet, col+rowStr, val); err != nil {
+					return err
+				}
+			}
+			if err := file.SetCellStyle(sheet, "A"+rowStr, lastHeaderCol+rowStr, dataStyle); err != nil {
+				return err
+			}
+			currentRow++
+		}
+
+		// Summary row
+		totalRowStr := fmt.Sprintf("%d", currentRow)
+		totalCells := map[string]interface{}{
+			"A": supplierName,
+			"B": "Total",
+			"H": item.Summary.TotalQty,
+			"I": item.Summary.TotalUnitPrice,
+			"J": item.Summary.TotalPurchaseValue,
+			"K": item.Summary.TotalTransportUnitPrice,
+			"L": item.Summary.TotalTransportValue,
+			"M": item.Summary.TotalAmount,
+		}
+		for col, val := range totalCells {
+			if err := file.SetCellValue(sheet, col+totalRowStr, val); err != nil {
+				return err
+			}
+		}
+		if err := file.SetCellStyle(sheet, "A"+totalRowStr, lastHeaderCol+totalRowStr, totalStyle); err != nil {
+			return err
+		}
+		currentRow++
+
+		// Empty separator row
+		currentRow++
+	}
+
+	return nil
+}
+
+// purchaseSupplierRowCells returns cell values for one data row.
+func purchaseSupplierRowCells(row dto.PurchaseSupplierRowDTO, seq int) []interface{} {
+	productName := "-"
+	if row.Product != nil && strings.TrimSpace(row.Product.Name) != "" {
+		productName = row.Product.Name
+	}
+	warehouseName := "-"
+	if row.Warehouse != nil && strings.TrimSpace(row.Warehouse.Name) != "" {
+		warehouseName = row.Warehouse.Name
+	}
+
+	return []interface{}{
+		seq,
+		safePurchaseSupplierText(row.ReceiveDate),
+		safePurchaseSupplierText(row.PoDate),
+		safePurchaseSupplierText(row.PoNumber),
+		productName,
+		warehouseName,
+		row.Qty,
+		row.UnitPrice,
+		row.PurchaseValue,
+		row.TransportUnitPrice,
+		row.TransportValue,
+		row.TotalAmount,
+		safePurchaseSupplierText(row.Expedition),
+		safePurchaseSupplierText(row.DeliveryNumber),
+	}
+}
+
+func purchaseSupplierName(item dto.PurchaseSupplierDTO) string {
+	if item.Supplier != nil && strings.TrimSpace(item.Supplier.Name) != "" {
+		return item.Supplier.Name
+	}
+	return "Supplier"
+}
+
+func sanitizePurchaseSupplierSheetName(name string) string {
+	replacer := strings.NewReplacer(
+		":", " ", "\\", " ", "/", " ",
+		"?", " ", "*", " ", "[", " ", "]", " ",
+	)
+	sanitized := strings.TrimSpace(replacer.Replace(name))
+	if sanitized == "" {
+		return "Sheet"
+	}
+	runes := []rune(sanitized)
+	if len(runes) > 31 {
+		return string(runes[:31])
+	}
+	return sanitized
+}
+
+func safePurchaseSupplierText(s string) string {
+	t := strings.TrimSpace(s)
+	if t == "" {
+		return "-"
+	}
+	return t
+}

internal/modules/repports/dto/repportExpenseDepreciation.dto.go

@@ -16,13 +16,17 @@ type ExpenseDepreciationMetaDTO struct {
 }
 
 type ExpenseDepreciationRowDTO struct {
-	ProjectFlockID               int64   `json:"project_flock_id"`
-	FarmName                     string  `json:"farm_name"`
-	Period                       string  `json:"period"`
-	DepreciationPercentEffective float64 `json:"depreciation_percent_effective"`
-	DepreciationValue            float64 `json:"depreciation_value"`
-	PulletCostDayNTotal          float64 `json:"pullet_cost_day_n_total"`
-	Components                   any     `json:"components"`
+	ProjectFlockID                    int64   `json:"project_flock_id"`
+	FarmName                          string  `json:"farm_name"`
+	Period                            string  `json:"period"`
+	DepreciationPercentEffective      float64 `json:"depreciation_percent_effective"`
+	DepreciationValue                 float64 `json:"depreciation_value"`
+	PulletCostDayNTotal               float64 `json:"pullet_cost_day_n_total"`
+	MultiplicationPercentage          float64 `json:"multiplication_percentage"`
+	DayN                              int     `json:"day_n"`
+	ChickinDate                       string  `json:"chickin_date"`
+	TotalValuePulletAfterDepreciation float64 `json:"total_value_pullet_after_depreciation"`
+	Components                        any     `json:"components"`
 }
 
 type ExpenseDepreciationManualInputRowDTO struct {

internal/modules/repports/repositories/expense_depreciation.repository.go

@@ -37,10 +37,10 @@ type FarmDepreciationManualInputRow struct {
 	Note           *string
 }
 
-type houseDepreciationPercentRow struct {
-	HouseType           string
-	Day                 int
-	DepreciationPercent float64
+type houseMultiplicationPercentageRow struct {
+	HouseType                string
+	Day                      int
+	MultiplicationPercentage float64
 }
 
 type ExpenseDepreciationRepository interface {
@@ -48,8 +48,9 @@ type ExpenseDepreciationRepository interface {
 	GetSnapshotsByPeriodAndFarmIDs(ctx context.Context, period time.Time, farmIDs []uint) ([]entity.FarmDepreciationSnapshot, error)
 	UpsertSnapshots(ctx context.Context, rows []entity.FarmDepreciationSnapshot) error
 	DeleteSnapshotsFromDate(ctx context.Context, fromDate time.Time, farmIDs []uint) error
+	DeleteSnapshotsByFarmIDs(ctx context.Context, farmIDs []uint) error
 	GetLatestTransferInputsByFarms(ctx context.Context, period time.Time, farmIDs []uint) ([]FarmDepreciationLatestTransferRow, error)
-	GetDepreciationPercents(ctx context.Context, houseTypes []string, maxDay int) (map[string]map[int]float64, error)
+	GetMultiplicationPercentages(ctx context.Context, houseTypes []string, maxDay int) (map[string]map[int]float64, error)
 	GetLatestManualInputsByFarms(ctx context.Context, areaIDs, locationIDs, projectFlockIDs []int64) ([]FarmDepreciationManualInputRow, error)
 	UpsertManualInput(ctx context.Context, row *entity.FarmDepreciationManualInput) error
 	DB() *gorm.DB
@@ -159,6 +160,17 @@ func (r *expenseDepreciationRepository) DeleteSnapshotsFromDate(
 	return query.Delete(nil).Error
 }
 
+func (r *expenseDepreciationRepository) DeleteSnapshotsByFarmIDs(ctx context.Context, farmIDs []uint) error {
+	if len(farmIDs) == 0 {
+		return nil
+	}
+
+	return r.db.WithContext(ctx).
+		Table("farm_depreciation_snapshots").
+		Where("project_flock_id IN ?", farmIDs).
+		Delete(nil).Error
+}
+
 func (r *expenseDepreciationRepository) GetLatestTransferInputsByFarms(
 	ctx context.Context,
 	period time.Time,
@@ -228,7 +240,7 @@ ORDER BY ltt.target_project_flock_kandang_id, at.effective_date DESC, at.id DESC
 	return rows, nil
 }
 
-func (r *expenseDepreciationRepository) GetDepreciationPercents(
+func (r *expenseDepreciationRepository) GetMultiplicationPercentages(
 	ctx context.Context,
 	houseTypes []string,
 	maxDay int,
@@ -238,14 +250,14 @@ func (r *expenseDepreciationRepository) GetDepreciationPercents(
 		return result, nil
 	}
 
-	rows := make([]houseDepreciationPercentRow, 0)
-	if err := r.db.WithContext(ctx).
-		Table("house_depreciation_standards").
-		Select("house_type::text AS house_type, day, depreciation_percent").
-		Where("house_type::text IN ?", houseTypes).
-		Where("day <= ?", maxDay).
-		Order("house_type ASC, day ASC").
-		Scan(&rows).Error; err != nil {
+	rows := make([]houseMultiplicationPercentageRow, 0)
+	if err := r.db.WithContext(ctx).Raw(`
+		SELECT DISTINCT ON (house_type::text, day)
+			house_type::text AS house_type, day, multiplication_percentage
+		FROM house_depreciation_standards
+		WHERE house_type::text IN ? AND day <= ?
+		ORDER BY house_type, day, effective_date DESC NULLS LAST
+	`, houseTypes, maxDay).Scan(&rows).Error; err != nil {
 		return nil, err
 	}
 
@@ -253,7 +265,7 @@ func (r *expenseDepreciationRepository) GetDepreciationPercents(
 		if _, exists := result[row.HouseType]; !exists {
 			result[row.HouseType] = make(map[int]float64)
 		}
-		result[row.HouseType][row.Day] = row.DepreciationPercent
+		result[row.HouseType][row.Day] = row.MultiplicationPercentage
 	}
 
 	return result, nil

internal/modules/repports/services/repport.service.go

@@ -237,6 +237,9 @@ func (s *repportService) GetExpenseDepreciation(ctx *fiber.Ctx) ([]dto.ExpenseDe
 
 	snapshotByFarmID := make(map[uint]entity.FarmDepreciationSnapshot)
 	if params.ForceRecompute {
+		if err := s.ExpenseDepreciationRepo.DeleteSnapshotsByFarmIDs(ctx.Context(), farmIDs); err != nil {
+			return nil, nil, err
+		}
 		computedSnapshots, computeErr := s.computeExpenseDepreciationSnapshots(ctx.Context(), periodDate, farmIDs, farmNameByID)
 		if computeErr != nil {
 			return nil, nil, computeErr
@@ -289,24 +292,31 @@ func (s *repportService) GetExpenseDepreciation(ctx *fiber.Ctx) ([]dto.ExpenseDe
 		snapshot, exists := snapshotByFarmID[candidate.ProjectFlockID]
 		if !exists {
 			rows = append(rows, dto.ExpenseDepreciationRowDTO{
-				ProjectFlockID:               int64(candidate.ProjectFlockID),
-				FarmName:                     candidate.FarmName,
-				Period:                       params.Period,
-				DepreciationPercentEffective: 0,
-				DepreciationValue:            0,
-				PulletCostDayNTotal:          0,
-				Components:                   map[string]any{},
+				ProjectFlockID:                    int64(candidate.ProjectFlockID),
+				FarmName:                          candidate.FarmName,
+				Period:                            params.Period,
+				DepreciationPercentEffective:      0,
+				DepreciationValue:                 0,
+				PulletCostDayNTotal:               0,
+				TotalValuePulletAfterDepreciation: 0,
+				Components:                        map[string]any{},
 			})
 			continue
 		}
+		components := parseSnapshotComponents(snapshot.Components)
+		multiplicationPercentage, dayN, chickinDate := depreciationSnapshotInfo(components)
 		rows = append(rows, dto.ExpenseDepreciationRowDTO{
-			ProjectFlockID:               int64(snapshot.ProjectFlockId),
-			FarmName:                     candidate.FarmName,
-			Period:                       params.Period,
-			DepreciationPercentEffective: snapshot.DepreciationPercentEffective,
-			DepreciationValue:            snapshot.DepreciationValue,
-			PulletCostDayNTotal:          snapshot.PulletCostDayNTotal,
-			Components:                   parseSnapshotComponents(snapshot.Components),
+			ProjectFlockID:                    int64(snapshot.ProjectFlockId),
+			FarmName:                          candidate.FarmName,
+			Period:                            params.Period,
+			DepreciationPercentEffective:      snapshot.DepreciationPercentEffective,
+			DepreciationValue:                 snapshot.DepreciationValue,
+			PulletCostDayNTotal:               snapshot.PulletCostDayNTotal,
+			MultiplicationPercentage:          multiplicationPercentage,
+			DayN:                              dayN,
+			ChickinDate:                       chickinDate,
+			TotalValuePulletAfterDepreciation: snapshot.PulletCostDayNTotal - snapshot.DepreciationValue,
+			Components:                        components,
 		})
 	}
 
@@ -472,23 +482,26 @@ func (s *repportService) UpsertExpenseDepreciationManualInput(ctx *fiber.Ctx, re
 }
 
 type depreciationKandangComponent struct {
-	ProjectFlockKandangID uint    `json:"project_flock_kandang_id"`
-	KandangID             uint    `json:"kandang_id"`
-	KandangName           string  `json:"kandang_name"`
-	TransferID            uint    `json:"transfer_id"`
-	TransferDate          string  `json:"transfer_date"`
-	SourceProjectFlockID  uint    `json:"source_project_flock_id"`
-	HouseType             string  `json:"house_type"`
-	DayN                  int     `json:"day_n"`
-	DepreciationPercent   float64 `json:"depreciation_percent"`
-	TransferQty           float64 `json:"transfer_qty"`
-	PulletCostDayN        float64 `json:"pullet_cost_day_n"`
-	DepreciationValue     float64 `json:"depreciation_value"`
-	DepreciationSource    string  `json:"depreciation_source,omitempty"`
-	ManualInputID         *uint   `json:"manual_input_id,omitempty"`
-	CutoverDate           string  `json:"cutover_date,omitempty"`
-	OriginDate            string  `json:"origin_date,omitempty"`
-	StartScheduleDay      *int    `json:"start_schedule_day,omitempty"`
+	ProjectFlockKandangID             uint    `json:"project_flock_kandang_id"`
+	KandangID                         uint    `json:"kandang_id"`
+	KandangName                       string  `json:"kandang_name"`
+	TransferID                        uint    `json:"transfer_id"`
+	TransferDate                      string  `json:"transfer_date"`
+	SourceProjectFlockID              uint    `json:"source_project_flock_id"`
+	HouseType                         string  `json:"house_type"`
+	DayN                              int     `json:"day_n"`
+	DepreciationPercent               float64 `json:"depreciation_percent"`
+	MultiplicationPercentage          float64 `json:"multiplication_percentage"`
+	TransferQty                       float64 `json:"transfer_qty"`
+	PulletCostDayN                    float64 `json:"pullet_cost_day_n"`
+	DepreciationValue                 float64 `json:"depreciation_value"`
+	TotalValuePulletAfterDepreciation float64 `json:"total_value_pullet_after_depreciation"`
+	DepreciationSource                string  `json:"depreciation_source,omitempty"`
+	ManualInputID                     *uint   `json:"manual_input_id,omitempty"`
+	CutoverDate                       string  `json:"cutover_date,omitempty"`
+	OriginDate                        string  `json:"origin_date,omitempty"`
+	ChickinDate                       string  `json:"chickin_date,omitempty"`
+	StartScheduleDay                  *int    `json:"start_schedule_day,omitempty"`
 }
 
 type depreciationFarmComponents struct {
@@ -548,17 +561,20 @@ func (s *repportService) computeExpenseDepreciationSnapshots(
 
 				houseType := approvalService.NormalizeDepreciationHouseType(breakdown.HouseType)
 				component := depreciationKandangComponent{
-					ProjectFlockKandangID: breakdown.ProjectFlockKandangID,
-					KandangID:             breakdown.KandangID,
-					KandangName:           breakdown.KandangName,
-					SourceProjectFlockID:  hppV2DetailUint(part.Details, "source_project_flock_id"),
-					HouseType:             houseType,
-					DayN:                  hppV2DetailInt(part.Details, "schedule_day"),
-					DepreciationPercent:   hppV2DetailFloat(part.Details, "depreciation_percent"),
-					PulletCostDayN:        hppV2DetailFloat(part.Details, "pullet_cost_day_n"),
-					DepreciationValue:     part.Total,
-					DepreciationSource:    part.Code,
-					OriginDate:            hppV2DetailString(part.Details, "origin_date"),
+					ProjectFlockKandangID:             breakdown.ProjectFlockKandangID,
+					KandangID:                         breakdown.KandangID,
+					KandangName:                       breakdown.KandangName,
+					SourceProjectFlockID:              hppV2DetailUint(part.Details, "source_project_flock_id"),
+					HouseType:                         houseType,
+					DayN:                              hppV2DetailInt(part.Details, "schedule_day"),
+					DepreciationPercent:               hppV2DetailFloat(part.Details, "depreciation_percent"),
+					MultiplicationPercentage:          hppV2DetailFloat(part.Details, "multiplication_percentage"),
+					PulletCostDayN:                    hppV2DetailFloat(part.Details, "pullet_cost_day_n"),
+					DepreciationValue:                 part.Total,
+					TotalValuePulletAfterDepreciation: hppV2DetailFloat(part.Details, "total_value_pullet_after_depreciation"),
+					DepreciationSource:                part.Code,
+					OriginDate:                        hppV2DetailString(part.Details, "origin_date"),
+					ChickinDate:                       hppV2DetailString(part.Details, "origin_date"),
 				}
 
 				if component.HouseType == "" {
@@ -700,8 +716,11 @@ func hppV2DetailString(details map[string]any, key string) string {
 	if details == nil || key == "" {
 		return ""
 	}
-	raw, exists := details[key]
-	if !exists || raw == nil {
+	return anyString(details[key])
+}
+
+func anyString(raw any) string {
+	if raw == nil {
 		return ""
 	}
 	switch value := raw.(type) {
@@ -725,6 +744,68 @@ func parseSnapshotComponents(raw []byte) any {
 	return out
 }
 
+func depreciationSnapshotInfo(components any) (float64, int, string) {
+	root, ok := components.(map[string]any)
+	if !ok {
+		return 0, 0, ""
+	}
+	kandang, ok := root["kandang"].([]any)
+	if !ok {
+		return 0, 0, ""
+	}
+	for _, raw := range kandang {
+		component, ok := raw.(map[string]any)
+		if !ok {
+			continue
+		}
+		dayN := int(math.Round(anyFloat(component["day_n"])))
+		multiplicationPercentage := anyFloat(component["multiplication_percentage"])
+		chickinDate := anyString(component["chickin_date"])
+		if chickinDate == "" {
+			chickinDate = anyString(component["origin_date"])
+		}
+		if dayN > 0 || multiplicationPercentage > 0 || chickinDate != "" {
+			return multiplicationPercentage, dayN, chickinDate
+		}
+	}
+	return 0, 0, ""
+}
+
+func anyFloat(raw any) float64 {
+	switch value := raw.(type) {
+	case float64:
+		return value
+	case float32:
+		return float64(value)
+	case int:
+		return float64(value)
+	case int8:
+		return float64(value)
+	case int16:
+		return float64(value)
+	case int32:
+		return float64(value)
+	case int64:
+		return float64(value)
+	case uint:
+		return float64(value)
+	case uint8:
+		return float64(value)
+	case uint16:
+		return float64(value)
+	case uint32:
+		return float64(value)
+	case uint64:
+		return float64(value)
+	case string:
+		parsed, err := strconv.ParseFloat(strings.TrimSpace(value), 64)
+		if err == nil {
+			return parsed
+		}
+	}
+	return 0
+}
+
 func valueOrEmptyString(v *string) string {
 	if v == nil {
 		return ""
@@ -1812,6 +1893,15 @@ func (s *repportService) GetDebtSupplier(c *fiber.Ctx, params *validation.DebtSu
 		return nil, 0, err
 	}
 
+	expenseIDs := make([]uint64, 0, len(expenses))
+	for _, exp := range expenses {
+		expenseIDs = append(expenseIDs, exp.Id)
+	}
+	expenseWarehousesMap, err := s.DebtSupplierRepo.GetWarehousesByExpenseIDs(c.Context(), expenseIDs)
+	if err != nil {
+		return nil, 0, err
+	}
+
 	purchasesBySupplier := make(map[uint][]entity.Purchase, len(supplierIDs))
 	for _, purchase := range purchases {
 		purchasesBySupplier[purchase.SupplierId] = append(purchasesBySupplier[purchase.SupplierId], purchase)
@@ -1906,7 +1996,7 @@ func (s *repportService) GetDebtSupplier(c *fiber.Ctx, params *validation.DebtSu
 		}
 
 		for _, exp := range expensesBySupplier[supplierID] {
-			row := buildDebtSupplierExpenseRow(exp, now, location)
+			row := buildDebtSupplierExpenseRow(exp, expenseWarehousesMap[exp.Id], now, location)
 			sortTime := exp.TransactionDate.In(location)
 			rowIndex := len(combinedRows)
 			combinedRows = append(combinedRows, debtSupplierRowItem{
@@ -2068,7 +2158,8 @@ func buildDebtSupplierRow(purchase entity.Purchase, now time.Time, loc *time.Loc
 	travelNumber := "-"
 	receivedDate := ""
 	var area *areaDTO.AreaRelationDTO
-	var warehouse *warehouseDTO.WarehouseRelationDTO
+	warehouses := []warehouseDTO.WarehouseRelationDTO{}
+	seenWarehouseIDs := map[uint]bool{}
 
 	if len(purchase.Items) > 0 {
 		firstItem := purchase.Items[0]
@@ -2076,24 +2167,22 @@ func buildDebtSupplierRow(purchase entity.Purchase, now time.Time, loc *time.Loc
 			travelNumber = *firstItem.TravelNumber
 		}
 
-		if firstItem.Warehouse != nil && firstItem.Warehouse.Id != 0 {
-			mappedWarehouse := warehouseDTO.ToWarehouseRelationDTO(*firstItem.Warehouse)
-			warehouse = &mappedWarehouse
-			if firstItem.Warehouse.Area.Id != 0 {
-				mappedArea := areaDTO.ToAreaRelationDTO(firstItem.Warehouse.Area)
-				area = &mappedArea
-			}
-		}
-
 		earliestReceived := time.Time{}
 		for _, item := range purchase.Items {
 			totalPrice += item.TotalPrice
-			if item.ReceivedDate == nil || item.ReceivedDate.IsZero() {
-				continue
+			if item.ReceivedDate != nil && !item.ReceivedDate.IsZero() {
+				received := item.ReceivedDate.In(loc)
+				if earliestReceived.IsZero() || received.Before(earliestReceived) {
+					earliestReceived = received
+				}
 			}
-			received := item.ReceivedDate.In(loc)
-			if earliestReceived.IsZero() || received.Before(earliestReceived) {
-				earliestReceived = received
+			if item.Warehouse != nil && item.Warehouse.Id != 0 && !seenWarehouseIDs[item.Warehouse.Id] {
+				seenWarehouseIDs[item.Warehouse.Id] = true
+				warehouses = append(warehouses, warehouseDTO.ToWarehouseRelationDTO(*item.Warehouse))
+				if area == nil && item.Warehouse.Area.Id != 0 {
+					mappedArea := areaDTO.ToAreaRelationDTO(item.Warehouse.Area)
+					area = &mappedArea
+				}
 			}
 		}
 		if !earliestReceived.IsZero() {
@@ -2126,7 +2215,7 @@ func buildDebtSupplierRow(purchase entity.Purchase, now time.Time, loc *time.Loc
 		ReceivedDate: receivedDate,
 		Aging:        aging,
 		Area:         area,
-		Warehouse:    warehouse,
+		Warehouses:   warehouses,
 		DueDate:      dueDate,
 		DueStatus:    dueStatus,
 		TotalPrice:   totalPrice,
@@ -2156,7 +2245,7 @@ func buildDebtSupplierPaymentRow(payment entity.Payment, loc *time.Location) dto
 		ReceivedDate: payment.PaymentDate.In(loc).Format("2006-01-02"),
 		Aging:        0,
 		Area:         nil,
-		Warehouse:    nil,
+		Warehouses:   []warehouseDTO.WarehouseRelationDTO{},
 		DueDate:      "-",
 		DueStatus:    "-",
 		TotalPrice:   0,
@@ -2260,7 +2349,7 @@ func resolveDebtSupplierReceivedDate(purchase entity.Purchase, loc *time.Locatio
 	return time.Date(earliest.Year(), earliest.Month(), earliest.Day(), 0, 0, 0, 0, loc)
 }
 
-func buildDebtSupplierExpenseRow(exp entity.Expense, now time.Time, loc *time.Location) dto.DebtSupplierRowDTO {
+func buildDebtSupplierExpenseRow(exp entity.Expense, warehouses []entity.Warehouse, now time.Time, loc *time.Location) dto.DebtSupplierRowDTO {
 	txDate := exp.TransactionDate.In(loc)
 	dateStr := txDate.Format("2006-01-02")
 
@@ -2282,6 +2371,15 @@ func buildDebtSupplierExpenseRow(exp entity.Expense, now time.Time, loc *time.Lo
 		area = &mapped
 	}
 
+	warehouseDTOs := make([]warehouseDTO.WarehouseRelationDTO, 0, len(warehouses))
+	seenWarehouseIDs := map[uint]bool{}
+	for _, w := range warehouses {
+		if w.Id != 0 && !seenWarehouseIDs[w.Id] {
+			seenWarehouseIDs[w.Id] = true
+			warehouseDTOs = append(warehouseDTOs, warehouseDTO.ToWarehouseRelationDTO(w))
+		}
+	}
+
 	poNumber := ""
 	if strings.TrimSpace(exp.PoNumber) != "" {
 		poNumber = exp.PoNumber
@@ -2294,7 +2392,7 @@ func buildDebtSupplierExpenseRow(exp entity.Expense, now time.Time, loc *time.Lo
 		ReceivedDate: dateStr,
 		Aging:        aging,
 		Area:         area,
-		Warehouse:    nil,
+		Warehouses:   warehouseDTOs,
 		DueDate:      "-",
 		DueStatus:    "-",
 		TotalPrice:   totalPrice,

internal/utils/recording/recording_helpers.go

@@ -244,8 +244,12 @@ func AttachProductionStandards(ctx context.Context, db *gorm.DB, warnOnly bool,
 		growthDetailByStd[standardID] = growthMap
 	}
 
-	// Batch-load laying transfer targets → source PFK chick_in_dates
-	// untuk menentukan actual chicken week (bukan hardcode LayingWeekStart offset)
+	// Batch-load laying transfer targets → EARLIEST source PFK chick_in_date per target.
+	// Multi-source: 1 target kandang bisa menerima dari multiple transfer terpisah. Untuk
+	// production standard week, kita pakai chick_in_date PALING AWAL (umur paling tua) sebagai
+	// anchor — agar perbandingan standar produksi tidak under-estimate umur ayam.
+	// Source diambil dari header `laying_transfers.source_project_flock_kandang_id` (single source
+	// of truth per migration 20260307130342), bukan dari `laying_transfer_sources`.
 	type transferChickIn struct {
 		TargetPFKID uint
 		ChickInDate time.Time
@@ -255,14 +259,16 @@ func AttachProductionStandards(ctx context.Context, db *gorm.DB, warnOnly bool,
 	if len(layingPFKIDs) > 0 {
 		var results []transferChickIn
 		db.Raw(`
-			SELECT ltt.target_project_flock_kandang_id AS target_pfk_id, pc.chick_in_date
+			SELECT ltt.target_project_flock_kandang_id AS target_pfk_id,
+			       MIN(pc.chick_in_date) AS chick_in_date
 			FROM laying_transfer_targets ltt
-			JOIN laying_transfer_sources lts ON lts.laying_transfer_id = ltt.laying_transfer_id
-			JOIN project_chickins pc ON pc.project_flock_kandang_id = lts.source_project_flock_kandang_id
+			JOIN laying_transfers lt ON lt.id = ltt.laying_transfer_id AND lt.deleted_at IS NULL
+			JOIN project_chickins pc ON pc.project_flock_kandang_id = lt.source_project_flock_kandang_id
 			WHERE ltt.target_project_flock_kandang_id IN ?
 			  AND ltt.deleted_at IS NULL
-			  AND lts.deleted_at IS NULL
+			  AND lt.source_project_flock_kandang_id IS NOT NULL
 			  AND pc.deleted_at IS NULL
+			GROUP BY ltt.target_project_flock_kandang_id
 		`, layingPFKIDs).Scan(&results)
 		for _, r := range results {
 			sourceChickInByTarget[r.TargetPFKID] = r.ChickInDate