feat: импорт человекочитаемого текстового BOM (формат "<описание> - N шт.")

Новый формат vendor-import: опциональный заголовок "Сервер <модель>,
в составе:" и строки вида "<описание> - <кол-во> шт." (дефис/тире,
пробел перед "шт" и точка опциональны). Количество якорится в конце
строки, поэтому дефисы и цифры внутри описания (8-GPU-2304GB) сохраняются.

Описание пишется и в vendor_partnumber, и в description: строки
резолвятся через активную книгу партномеров, иначе остаются
нерезолвленными и редактируемыми. Весь файл — одна конфигурация.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

internal/services/vendor_workspace_import.go

@@ -6,6 +6,7 @@ import (
 	"encoding/xml"
 	"fmt"
 	"path/filepath"
+	"regexp"
 	"sort"
 	"strconv"
 	"strings"
@@ -134,6 +135,8 @@ func (s *LocalConfigurationService) ImportVendorWorkspaceToProject(projectUUID s
 		workspace, err = parseQuoteForgeCSV(data, filepath.Base(sourceFileName))
 	case IsInspurBOM(data):
 		workspace, err = parseInspurBOM(data, filepath.Base(sourceFileName))
+	case IsTextBOM(data):
+		workspace, err = parseTextBOM(data, filepath.Base(sourceFileName))
 	default:
 		return nil, fmt.Errorf("unsupported vendor export format")
 	}
@@ -680,6 +683,93 @@ func parseInspurBOM(data []byte, sourceFileName string) (*importedWorkspace, err
 	}, nil
 }
 
+// textBOMItemLine matches a human-readable BOM line of the form
+// "<description> - <quantity> шт." where the separator may be a hyphen,
+// en-dash or em-dash and the quantity may have an optional space before "шт".
+// The quantity anchor at the end keeps internal hyphens/digits in the
+// description (e.g. "8-GPU-2304GB") from being mistaken for the separator.
+var textBOMItemLine = regexp.MustCompile(`(?i)^(.*\S)\s*[-–—]\s*(\d+)\s*шт\.?\s*$`)
+
+// textBOMHeaderLine matches the configuration header "Сервер <model>, в составе:".
+var textBOMHeaderLine = regexp.MustCompile(`(?i)^\s*сервер\s+(.+?)\s*,\s*в\s+составе`)
+
+// IsTextBOM reports whether data looks like a human-readable Russian text BOM,
+// i.e. it contains at least one "<description> - <quantity> шт." line.
+func IsTextBOM(data []byte) bool {
+	for _, raw := range strings.Split(string(data), "\n") {
+		if textBOMItemLine.MatchString(strings.TrimSpace(raw)) {
+			return true
+		}
+	}
+	return false
+}
+
+// parseTextBOM parses a human-readable Russian text BOM into a single configuration.
+// The optional "Сервер <model>, в составе:" header provides the configuration name and
+// server model. Each "<description> - <quantity> шт." line becomes one vendor spec row.
+// The format carries no partnumbers, so rows stay unresolved and editable in the UI
+// until mapped through the active partnumber book.
+func parseTextBOM(data []byte, sourceFileName string) (*importedWorkspace, error) {
+	lines := strings.Split(string(data), "\n")
+	rows := make([]localdb.VendorSpecItem, 0, len(lines))
+	sortOrder := 10
+	serverModel := ""
+
+	for _, raw := range lines {
+		line := strings.TrimSpace(raw)
+		if line == "" {
+			continue
+		}
+		if m := textBOMHeaderLine.FindStringSubmatch(line); m != nil {
+			serverModel = strings.TrimSpace(m[1])
+			continue
+		}
+		m := textBOMItemLine.FindStringSubmatch(line)
+		if m == nil {
+			continue
+		}
+		description := strings.TrimSpace(m[1])
+		qty, err := strconv.Atoi(m[2])
+		if err != nil || qty <= 0 || description == "" {
+			continue
+		}
+		rows = append(rows, localdb.VendorSpecItem{
+			SortOrder:        sortOrder,
+			VendorPartnumber: description,
+			Quantity:         qty,
+			Description:      description,
+		})
+		sortOrder += 10
+	}
+
+	if len(rows) == 0 {
+		return nil, fmt.Errorf("text BOM has no importable rows")
+	}
+
+	name := serverModel
+	if name == "" {
+		name = strings.TrimSuffix(filepath.Base(sourceFileName), filepath.Ext(sourceFileName))
+	}
+	if name == "" {
+		name = "Text BOM Import"
+	}
+
+	return &importedWorkspace{
+		SourceFormat:   "Text",
+		SourceFileName: sourceFileName,
+		Configurations: []importedConfiguration{
+			{
+				GroupID:     "text-0",
+				Name:        name,
+				Line:        10,
+				ServerCount: 1,
+				ServerModel: serverModel,
+				Rows:        rows,
+			},
+		},
+	}, nil
+}
+
 // IsQuoteForgeCSV reports whether data looks like a QuoteForge own CSV export.
 // The file starts (after optional UTF-8 BOM) with the header line:
 // "Line;Type;p/n;Description;Qty (1 pcs.);Qty (total);..."