feat: Nx BOM import — формат <qty>x <description>

Добавлен новый вариант импорта спеки: quantity-first формат, где каждая
строка начинается с `<qty>x <description>` (например, «2x Intel Xeon 8570»).
Порядок детекции: Inspur → Nx → Text BOM. Заголовок «, в составе:» работает
так же, как в Text BOM — последний токен перед запятой становится server_model.

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

bible-local/09-vendor-spec.md

@@ -112,6 +112,41 @@ Rules:
 - lines that do not match `<description> - <quantity> шт.` are skipped;
 - no price data is present in the format; `unit_price` and `total_price` are left nil.
 
+## Nx BOM import (quantity-first)
+
+The same endpoint `POST /api/projects/:uuid/vendor-import` also accepts a quantity-first BOM
+where each item line begins with `<qty>x <description>`.
+
+Format: an optional header line ending with `, в составе:` followed by one component per line as
+`<qty>x <description>`. The `x` separator is case-insensitive; parentheses, commas, and hyphens
+inside the description are preserved as-is.
+
+Example:
+```
+Сервер G893-SD1-AAX3, в составе:
+1x 8U 2CPU 8GPU Server System (32x DDR5 DIMM Slots,8x 2.5" Hot-Swap Drive Bays, 4+4 3000W, 2x 10Gb/s RJ45, 2x IPMI RJ45)
+2x Intel Xeon 8570 (56 cores, 2.1GHz, 300MB, 350W)
+32x 64GB DDR5 ECC RDIMM
+1x GPU Nvidia HGX H200 141GB 8GPU
+3x 1.92TB NVMe PCIe SFF RI
+5x 7.68TB NVMe PCIe SFF RI
+8x 1-port 400G NDR OSFP CX7
+2x 2-port 100GbE QSFP56 CX6
+1x 2-port 10GbE RJ45
+```
+
+Rules:
+- the entire file becomes a single configuration (`server_count = 1`);
+- the header (any line ending with `, в составе:`) supplies `server_model` and `name`; the model is the
+  last whitespace-separated token before the comma;
+- without a header, `name` falls back to the uploaded filename (without extension) and `server_model` is empty;
+- the format carries no partnumbers — each line's description is stored as both `vendor_partnumber` and
+  `description`, so rows resolve through the active partnumber book when matched and otherwise stay
+  unresolved and editable in the UI;
+- lines that do not match `<qty>x <description>` are skipped;
+- no price data is present in the format; `unit_price` and `total_price` are left nil;
+- detection runs before Text BOM in the format switch (Inspur → Nx → Text).
+
 ## Pasted BOM text parsing
 
 `POST /api/vendor-spec/parse-text` is a stateless endpoint that parses pasted single-column text BOM
@@ -119,7 +154,7 @@ Rules:
 `{"rows": [{vendor_partnumber, quantity, description}], "format": "Inspur"|"Text"|""}`.
 
 This shares the exact detectors and parsers used by the file-import path
-(`ParsePastedBOMText` → `IsInspurBOM`/`parseInspurBOM`, `IsTextBOM`/`parseTextBOM`), so paste and upload
+(`ParsePastedBOMText` → `IsInspurBOM`/`parseInspurBOM`, `IsNxBOM`/`parseNxBOM`, `IsTextBOM`/`parseTextBOM`),
-behave identically — there is no second parser in the frontend. The configurator's BOM paste box calls
+so paste and upload behave identically — there is no second parser in the frontend. The configurator's BOM
-this endpoint; an empty `rows` result (or any payload containing tabs, i.e. a real spreadsheet table)
+paste box calls this endpoint; an empty `rows` result (or any payload containing tabs, i.e. a real
-falls back to the manual column-mapping grid.
+spreadsheet table) falls back to the manual column-mapping grid.

internal/services/vendor_workspace_import.go

@@ -135,6 +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 IsNxBOM(data):
+		workspace, err = parseNxBOM(data, filepath.Base(sourceFileName))
 	case IsTextBOM(data):
 		workspace, err = parseTextBOM(data, filepath.Base(sourceFileName))
 	default:
@@ -683,6 +685,93 @@ func parseInspurBOM(data []byte, sourceFileName string) (*importedWorkspace, err
 	}, nil
 }
 
+// nxBOMItemLine matches a quantity-first BOM line: "<qty>x <description>"
+// where the quantity prefix is digits followed immediately by "x" (case-insensitive).
+// Parentheses, commas, and hyphens inside the description are preserved.
+var nxBOMItemLine = regexp.MustCompile(`(?i)^(\d+)[xX]\s+(.+\S)\s*$`)
+
+// IsNxBOM reports whether data looks like a quantity-first "Nx" BOM where each
+// item line begins with "<qty>x <description>" (e.g. "2x Intel Xeon 8570 ...").
+func IsNxBOM(data []byte) bool {
+	for _, raw := range strings.Split(string(data), "\n") {
+		if nxBOMItemLine.MatchString(strings.TrimSpace(raw)) {
+			return true
+		}
+	}
+	return false
+}
+
+// parseNxBOM parses a quantity-first "Nx" BOM into a single configuration.
+// An optional header line ending with ", в составе:" supplies server_model and name.
+// Each "<qty>x <description>" line becomes one vendor spec row; description is stored
+// as both vendor_partnumber and description so rows resolve through the active
+// partnumber book when matched and otherwise stay unresolved and editable in the UI.
+func parseNxBOM(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 {
+			if fields := strings.Fields(m[1]); len(fields) > 0 {
+				serverModel = fields[len(fields)-1]
+			}
+			continue
+		}
+		m := nxBOMItemLine.FindStringSubmatch(line)
+		if m == nil {
+			continue
+		}
+		qty, err := strconv.Atoi(m[1])
+		if err != nil || qty <= 0 {
+			continue
+		}
+		description := strings.TrimSpace(m[2])
+		if 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("Nx BOM has no importable rows")
+	}
+
+	name := serverModel
+	if name == "" {
+		name = strings.TrimSuffix(filepath.Base(sourceFileName), filepath.Ext(sourceFileName))
+	}
+	if name == "" {
+		name = "Nx BOM Import"
+	}
+
+	return &importedWorkspace{
+		SourceFormat:   "Nx",
+		SourceFileName: sourceFileName,
+		Configurations: []importedConfiguration{
+			{
+				GroupID:     "nx-0",
+				Name:        name,
+				Line:        10,
+				ServerCount: 1,
+				ServerModel: serverModel,
+				Rows:        rows,
+			},
+		},
+	}, 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".
@@ -709,6 +798,8 @@ func ParsePastedBOMText(text string) ([]localdb.VendorSpecItem, string) {
 	switch {
 	case IsInspurBOM(data):
 		ws, err = parseInspurBOM(data, "")
+	case IsNxBOM(data):
+		ws, err = parseNxBOM(data, "")
 	case IsTextBOM(data):
 		ws, err = parseTextBOM(data, "")
 	default: