backend/src/mcp/masterdataFields.ts

@@ -0,0 +1,83 @@
+import { getTableColumns } from "drizzle-orm"
+
+export type InputField = {
+    schema: Record<string, any>
+    parse: (value: unknown, path: string) => any
+}
+
+const invalid = (path: string, expected: string): never => { throw new Error(`${path}: ${expected}`) }
+export const textField = (nonEmpty = false): InputField => ({
+    schema: { type: "string", ...(nonEmpty ? { minLength: 1 } : {}) },
+    parse: (value, path) => typeof value === "string" && (!nonEmpty || value.trim())
+        ? value.trim() : invalid(path, "Text" + (nonEmpty ? " darf nicht leer sein" : " erwartet")),
+})
+export const numericField = (integer = false, minimum?: number, maximum?: number): InputField => ({
+    schema: { type: integer ? "integer" : "number", ...(minimum !== undefined ? { minimum } : {}), ...(maximum !== undefined ? { maximum } : {}) },
+    parse: (value, path) => {
+        if (typeof value !== "number" || !Number.isFinite(value) || (integer && !Number.isSafeInteger(value))
+            || (minimum !== undefined && value < minimum) || (maximum !== undefined && value > maximum)) {
+            return invalid(path, `gültige ${integer ? "ganze " : ""}Zahl im angegebenen Bereich erwartet`)
+        }
+        return value
+    },
+})
+export const idField = numericField(true, 1)
+export const uuidField: InputField = {
+    schema: { type: "string", format: "uuid" },
+    parse: (value, path) => typeof value === "string" && /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i.test(value)
+        ? value.toLowerCase() : invalid(path, "gültige UUID erwartet"),
+}
+export const booleanField: InputField = {
+    schema: { type: "boolean" },
+    parse: (value, path) => typeof value === "boolean" ? value : invalid(path, "Boolean erwartet"),
+}
+export const dateField: InputField = {
+    schema: { type: "string", format: "date", description: "Kalenderdatum YYYY-MM-DD." },
+    parse: (value, path) => {
+        if (typeof value !== "string" || !/^\d{4}-\d{2}-\d{2}$/.test(value)) return invalid(path, "Datum YYYY-MM-DD erwartet")
+        const date = new Date(`${value}T00:00:00Z`)
+        if (!Number.isFinite(date.getTime()) || date.toISOString().slice(0, 10) !== value) return invalid(path, "ungültiges Kalenderdatum")
+        return value
+    },
+}
+export const nullable = (field: InputField): InputField => ({
+    schema: { ...field.schema, type: [field.schema.type, "null"] },
+    parse: (value, path) => value === null ? null : field.parse(value, path),
+})
+export const arrayField = (item: InputField): InputField => ({
+    schema: { type: "array", items: item.schema },
+    parse: (value, path) => Array.isArray(value) ? value.map((entry, index) => item.parse(entry, `${path}[${index}]`)) : invalid(path, "Array erwartet"),
+})
+export const objectField = (fields: Record<string, InputField>, additionalProperties = false): InputField => ({
+    schema: { type: "object", properties: Object.fromEntries(Object.entries(fields).map(([key, field]) => [key, field.schema])), additionalProperties },
+    parse: (value, path) => {
+        if (!value || typeof value !== "object" || Array.isArray(value)) return invalid(path, "Objekt erwartet")
+        const entries = Object.entries(value).map(([key, entry]) => {
+            if (Object.prototype.hasOwnProperty.call(fields, key)) return [key, fields[key].parse(entry, `${path}.${key}`)]
+            if (!additionalProperties || ["__proto__", "constructor", "prototype"].includes(key)) return invalid(`${path}.${key}`, "unbekanntes Feld")
+            return [key, entry]
+        })
+        return Object.fromEntries(entries)
+    },
+})
+
+/** Explicit allowlist; scalar types and nullability follow the persisted columns. */
+export function tableFields(table: any, names: string, overrides: Record<string, InputField> = {}) {
+    const columns = getTableColumns(table) as Record<string, any>
+    return Object.fromEntries(names.split(/\s+/).filter(Boolean).map((name) => {
+        const column = columns[name]
+        if (!column) throw new Error(`Unbekanntes Stammdatenfeld ${name}`)
+        let field = overrides[name]
+        if (!field) {
+            if (column.columnType === "PgUUID") field = uuidField
+            else if (column.columnType === "PgDateString") field = dateField
+            else if (column.dataType === "string") field = textField(name === "name")
+            else if (column.dataType === "boolean") field = booleanField
+            else if (column.dataType === "number") {
+                field = column.columnType === "PgSmallInt" ? numericField(true, -32768, 32767)
+                    : numericField(column.columnType !== "PgDoublePrecision")
+            } else throw new Error(`Explizites Eingabeschema für ${name} erforderlich`)
+        }
+        return [name, column.notNull ? field : nullable(field)]
+    }))
+}

backend/src/mcp/tools/masterdata.ts

@@ -1,3 +1,5 @@
+import { masterdataMutationTools } from "./masterdataWrites"
+import { organisationTools } from "./organisation"
 import { limitFromArgs, offsetFromArgs, paginatedResult, paginationProperties } from "../pagination"
 import { and, desc, eq, ilike, or } from "drizzle-orm"
 import {
@@ -34,6 +36,12 @@ const uuidArg = (args: Record<string, unknown>, key: string) => {
 }
 
 export const masterdataTools: McpTool[] = [
+    ...masterdataMutationTools,
+    {
+        ...organisationTools.find((tool) => tool.name === "organisation.customers.search")!,
+        name: "masterdata.customers.search",
+        requiredPermissions: ["masterdata.customers.read"],
+    },
     {
         name: "masterdata.customers.get",
         title: "Kunde laden",

backend/src/mcp/tools/masterdataWrites.ts

@@ -0,0 +1,277 @@
+import { and, eq, getTableColumns, inArray, sql } from "drizzle-orm"
+import * as tables from "../../../db/schema"
+import { assertToolPermission } from "../authz"
+import { McpContext, McpTool } from "../types"
+import { arrayField, booleanField, idField, InputField, nullable, numericField, objectField, tableFields, textField, uuidField } from "../masterdataFields"
+import { useNextNumberRangeNumber } from "../../utils/functions"
+import { insertHistoryItem } from "../../utils/history"
+import { validateCostCentreParent } from "../../modules/cost-centre-hierarchy.service"
+import { recalculateServicePricesForTenant } from "../../modules/service-price-recalculation.service"
+
+const infoDataField = objectField({
+    ...Object.fromEntries("street special zip city country tel mobileTel email invoiceEmail web ustid".split(" ").map((key) => [key, nullable(textField())])),
+    bankAccountIds: arrayField(idField),
+    hasSEPA: booleanField,
+    sepaSignedAt: nullable(textField()),
+}, true)
+infoDataField.schema.description = "Kontaktdaten und Zusatzfelder. Bei update werden angegebene Unterfelder mit infoData zusammengeführt; Arrays werden ersetzt."
+const profilesField = arrayField(uuidField)
+const compositionField = arrayField(objectField({
+    id: uuidField, name: textField(), quantity: numericField(), price: numericField(), purchasePrice: numericField(),
+    product: nullable(idField), service: nullable(idField), hourrate: nullable(uuidField),
+}, true))
+const priceField = objectField({ total: numericField(), material: numericField(), worker: numericField() }, true)
+
+type Reference = { field: string; table: any; idKey?: string; tenantKey?: string }
+type Config = {
+    resource: string
+    namespace: string
+    label: string
+    resultKey: string
+    table: any
+    fields: Record<string, InputField>
+    required: string[]
+    numberField?: string
+    references?: Reference[]
+    addGet?: boolean
+}
+const makeConfig = (config: Omit<Config, "fields"> & { fieldNames: string; overrides?: Record<string, InputField> }): Config => ({
+    ...config,
+    fields: tableFields(config.table, config.fieldNames, config.overrides),
+})
+const commonProfiles: Reference = { field: "profiles", table: tables.authProfiles, tenantKey: "tenant_id" }
+const bankAccounts: Reference = { field: "infoData.bankAccountIds", table: tables.entitybankaccounts }
+
+export const masterdataWriteConfigs: Config[] = [
+    makeConfig({
+        resource: "customers", namespace: "customers", label: "Kunde", resultKey: "customer", table: tables.customers,
+        required: ["name"], numberField: "customerNumber",
+        fieldNames: "name customerNumber infoData active notes type isCompany profiles customPaymentDays firstname lastname customSurchargePercentage salutation title nameAddition availableInPortal customPaymentType customTaxType memberrelation",
+        overrides: { customerNumber: textField(true), infoData: infoDataField, profiles: profilesField, memberrelation: idField },
+        references: [commonProfiles, bankAccounts, { field: "memberrelation", table: tables.memberrelations }],
+    }),
+    makeConfig({
+        resource: "vendors", namespace: "vendors", label: "Lieferant", resultKey: "vendor", table: tables.vendors,
+        required: ["name"], numberField: "vendorNumber",
+        fieldNames: "name vendorNumber infoData notes hasSEPA profiles defaultPaymentMethod",
+        overrides: { vendorNumber: textField(true), infoData: infoDataField, profiles: profilesField },
+        references: [commonProfiles, bankAccounts],
+    }),
+    makeConfig({
+        resource: "contacts", namespace: "contacts", label: "Kontakt", resultKey: "contact", table: tables.contacts, required: [], addGet: true,
+        fieldNames: "firstName lastName fullName email customer vendor phoneMobile phoneHome role salutation active birthday notes profiles title",
+        overrides: { profiles: profilesField, customer: idField, vendor: idField },
+        references: [commonProfiles, { field: "customer", table: tables.customers }, { field: "vendor", table: tables.vendors }],
+    }),
+    makeConfig({
+        resource: "products", namespace: "products", label: "Artikel", resultKey: "product", table: tables.products, required: ["name", "unit"],
+        fieldNames: "name manufacturer unit tags ean barcode purchase_price selling_price description manufacturer_number vendor_allocation article_number supplier_link barcodes productcategories tax_percentage markup_percentage",
+        overrides: {
+            unit: idField, tags: arrayField(textField()), barcodes: arrayField(textField()), productcategories: arrayField(idField), tax_percentage: numericField(true, 0, 100),
+            vendor_allocation: arrayField(objectField({ vendor: idField, articleNumber: textField(), purchasePrice: numericField() }, true)),
+        },
+        references: [{ field: "unit", table: tables.units }, { field: "productcategories", table: tables.productcategories }, { field: "vendor_allocation.vendor", table: tables.vendors }],
+    }),
+    makeConfig({
+        resource: "services", namespace: "services", label: "Leistung", resultKey: "service", table: tables.services, required: ["name"],
+        fieldNames: "name sellingPrice description unit costcentre serviceNumber tags servicecategories purchasePriceComposed sellingPriceComposed taxPercentage materialComposition personalComposition priceUpdateLocked",
+        overrides: {
+            unit: idField, tags: arrayField(textField()), servicecategories: arrayField(idField), taxPercentage: numericField(true, 0, 100),
+            purchasePriceComposed: priceField, sellingPriceComposed: priceField, materialComposition: compositionField, personalComposition: compositionField,
+        },
+        references: [
+            { field: "unit", table: tables.units }, { field: "costcentre", table: tables.costcentres }, { field: "servicecategories", table: tables.servicecategories },
+            { field: "materialComposition.product", table: tables.products }, { field: "materialComposition.service", table: tables.services },
+            { field: "personalComposition.hourrate", table: tables.hourrates },
+        ],
+    }),
+    makeConfig({
+        resource: "costcentres", namespace: "cost_centres", label: "Kostenstelle", resultKey: "costCentre", table: tables.costcentres,
+        required: ["name"], numberField: "number",
+        fieldNames: "name number parentCostcentre vehicle project branch inventoryitem description profiles",
+        overrides: { number: textField(true), vehicle: idField, project: idField, branch: idField, inventoryitem: idField, profiles: profilesField },
+        references: [commonProfiles, { field: "parentCostcentre", table: tables.costcentres }, { field: "vehicle", table: tables.vehicles }, { field: "project", table: tables.projects }, { field: "branch", table: tables.branches }, { field: "inventoryitem", table: tables.inventoryitems }],
+    }),
+    makeConfig({
+        resource: "branches", namespace: "branches", label: "Niederlassung", resultKey: "branch", table: tables.branches,
+        required: ["name"], numberField: "number", fieldNames: "name number description", overrides: { number: textField(true) }, addGet: true,
+    }),
+    makeConfig({
+        resource: "teams", namespace: "teams", label: "Team", resultKey: "team", table: tables.teams,
+        required: ["name"], fieldNames: "name description branch", overrides: { branch: idField }, references: [{ field: "branch", table: tables.branches }], addGet: true,
+    }),
+    makeConfig({
+        resource: "vehicles", namespace: "vehicles", label: "Fahrzeug", resultKey: "vehicle", table: tables.vehicles,
+        required: ["name"], fieldNames: "name license_plate type active driver vin tank_size build_year towing_capacity power_in_kw color profiles",
+        overrides: { profiles: profilesField, tank_size: numericField(false, 0), towing_capacity: numericField(true, 0), power_in_kw: numericField(true, 0) },
+        references: [commonProfiles, { field: "driver", table: tables.authProfiles, idKey: "user_id", tenantKey: "tenant_id" }], addGet: true,
+    }),
+    makeConfig({
+        resource: "inventoryitems", namespace: "inventory_items", label: "Inventar", resultKey: "inventoryItem", table: tables.inventoryitems,
+        required: ["name"], numberField: "articleNumber",
+        fieldNames: "name usePlanning description currentSpace articleNumber serialNumber purchaseDate vendor quantity purchasePrice manufacturer manufacturerNumber currentValue profiles",
+        overrides: { articleNumber: textField(true), currentSpace: idField, vendor: idField, profiles: profilesField, quantity: numericField(true, 0) },
+        references: [commonProfiles, { field: "currentSpace", table: tables.spaces }, { field: "vendor", table: tables.vendors }],
+    }),
+]
+
+const identifier = (config: Config) => config.resource === "costcentres" ? uuidField : idField
+
+export function prepareMasterdataInput(config: Config, action: "create" | "update" | "archive", args: Record<string, unknown>) {
+    const fields = action === "archive" ? {} : config.fields
+    const input = objectField({ ...fields, ...(action === "create" ? {} : { id: identifier(config) }) }).parse(args, "arguments")
+    for (const key of action === "create" ? config.required : ["id"]) {
+        if (input[key] === undefined || input[key] === null) throw new Error(`${key} ist erforderlich`)
+    }
+    if (action === "update" && Object.keys(input).length === 1) throw new Error("Mindestens ein bearbeitbares Feld ist erforderlich")
+    return input
+}
+
+function valuesAtPath(value: any, path: string[]): any[] {
+    if (Array.isArray(value)) return value.flatMap((entry) => valuesAtPath(entry, path))
+    if (!path.length) return value === undefined || value === null ? [] : [value]
+    return valuesAtPath(value?.[path[0]], path.slice(1))
+}
+
+async function validateReferences(db: any, config: Config, tenantId: number, data: Record<string, any>) {
+    for (const reference of config.references || []) {
+        const ids = [...new Set(valuesAtPath(data, reference.field.split(".")))]
+        if (!ids.length) continue
+        const table = reference.table
+        const idColumn = table[reference.idKey || "id"]
+        const tenantColumn = table[reference.tenantKey || "tenant"]
+        const conditions = [inArray(idColumn, ids)]
+        if (tenantColumn) conditions.push(eq(tenantColumn, tenantId))
+        if (table.archived) conditions.push(eq(table.archived, false))
+        if (table === tables.authProfiles) conditions.push(eq(table.active, true))
+        const found = await db.select({ id: idColumn }).from(table).where(and(...conditions))
+        if (new Set(found.map((row: any) => row.id)).size !== ids.length) {
+            throw new Error(`${reference.field}: mindestens ein verknüpfter Datensatz ist im aktiven Mandanten nicht verfügbar`)
+        }
+    }
+}
+
+async function mutate(context: McpContext, config: Config, action: "create" | "update" | "archive", args: Record<string, unknown>) {
+    const { id, ...input } = prepareMasterdataInput(config, action, args)
+    return context.server.db.transaction(async (tx) => {
+        // Coordinate number allocation and hierarchy changes across concurrent MCP calls.
+        // The existing number-range helper uses the same transaction-scoped tenant lock.
+        await tx.execute(sql`select pg_advisory_xact_lock(${context.tenantId})`)
+        const server = { ...context.server, db: tx } as unknown as McpContext["server"]
+        const table = config.table
+        const scope = and(eq(table.id, id), eq(table.tenant, context.tenantId), eq(table.archived, false))
+        let existing: any = null
+        if (action !== "create") {
+            ;[existing] = await tx.select().from(table).where(scope).limit(1).for("update")
+            if (!existing) throw new Error(`${config.label} nicht gefunden oder archiviert`)
+        }
+        const data: Record<string, any> = action === "archive" ? { archived: true } : { ...input }
+        if (action !== "archive") {
+            if (data.infoData && existing?.infoData) data.infoData = { ...existing.infoData, ...data.infoData }
+            if (config.resource === "contacts" && data.fullName === undefined && (action === "create" || data.firstName !== undefined || data.lastName !== undefined)) {
+                const merged = { ...existing, ...data }
+                data.fullName = [merged.firstName, merged.lastName].filter(Boolean).join(" ")
+            }
+            const merged = { ...existing, ...data }
+            if (config.resource === "contacts" && !merged.fullName?.trim()) throw new Error("Kontakt benötigt fullName oder Vor-/Nachname")
+            if (config.resource === "customers" && merged.type === "Mitglied") {
+                data.isCompany = false
+                if (!merged.firstname?.trim() || !merged.lastname?.trim() || !merged.infoData?.bankAccountIds?.length) {
+                    throw new Error("Mitglieder benötigen Vorname, Nachname und mindestens ein Bankkonto")
+                }
+                if (merged.infoData.hasSEPA && !merged.infoData.sepaSignedAt) throw new Error("SEPA-Mandat benötigt ein Unterschriftsdatum")
+            }
+            if (config.resource === "services") {
+                // The shared recalculation service prefers sellingPriceComposed.total.
+                // Keep both representations consistent for manual price edits, including zero.
+                if (data.sellingPrice !== undefined) {
+                    const total = data.sellingPrice ?? 0
+                    if (data.sellingPriceComposed?.total !== undefined && data.sellingPriceComposed.total !== total) {
+                        throw new Error("sellingPrice und sellingPriceComposed.total widersprechen sich")
+                    }
+                    data.sellingPriceComposed = { ...existing?.sellingPriceComposed, ...data.sellingPriceComposed, total }
+                } else if (data.sellingPriceComposed?.total !== undefined) {
+                    data.sellingPrice = data.sellingPriceComposed.total
+                }
+            }
+            await validateReferences(tx, config, context.tenantId, data)
+            if (config.resource === "costcentres") {
+                const error = await validateCostCentreParent(server, context.tenantId, id || null, merged.parentCostcentre || null)
+                if (error) throw new Error(error)
+            }
+            if (config.numberField) {
+                if (action === "create" && !data[config.numberField]) {
+                    const result = await useNextNumberRangeNumber(server, context.tenantId, config.resource, async (candidate, numberTx) => {
+                        const rows = await numberTx.select({ id: table.id }).from(table)
+                            .where(and(eq(table.tenant, context.tenantId), eq(table[config.numberField!], candidate))).limit(1)
+                        return rows.length === 0
+                    })
+                    data[config.numberField] = result.usedNumber
+                } else if (data[config.numberField] !== undefined && data[config.numberField] !== null) {
+                    const rows = await tx.select({ id: table.id }).from(table)
+                        .where(and(eq(table.tenant, context.tenantId), eq(table[config.numberField], data[config.numberField]))).limit(2)
+                    if (rows.some((row: any) => row.id !== id)) throw new Error(`${config.numberField} ist bereits vergeben`)
+                }
+            }
+        }
+        const columns = getTableColumns(table)
+        data["updated_at" in columns ? "updated_at" : "updatedAt"] = new Date()
+        data["updated_by" in columns ? "updated_by" : "updatedBy"] = context.userId
+        let result: any
+        if (action === "create") {
+            ;[result] = await tx.insert(table).values({ ...data, tenant: context.tenantId, archived: false }).returning()
+        } else {
+            ;[result] = await tx.update(table).set(data).where(scope).returning()
+        }
+        if (["products", "services"].includes(config.resource)) {
+            await recalculateServicePricesForTenant(server, context.tenantId, context.userId)
+            ;[result] = await tx.select().from(table).where(and(eq(table.id, result.id), eq(table.tenant, context.tenantId))).limit(1)
+        }
+        await insertHistoryItem(server, {
+            tenant_id: context.tenantId, created_by: context.userId, entity: config.resource, entityId: result.id,
+            action: action === "create" ? "created" : action === "archive" ? "archived" : "updated", oldVal: existing, newVal: result,
+        })
+        // Archived objects are filtered from normal MCP results; return an explicit confirmation.
+        return action === "archive" ? { id: result.id, success: true, action: "archived" } : { [config.resultKey]: result }
+    })
+}
+
+export const masterdataMutationTools: McpTool[] = masterdataWriteConfigs.flatMap((config) => {
+    const tools: McpTool[] = (["create", "update", "archive"] as const).map((action) => {
+        const fields = action === "archive" ? {} : config.fields
+        const properties = Object.fromEntries(Object.entries(fields).map(([key, field]) => [key, field.schema]))
+        if (action !== "create") properties.id = identifier(config).schema
+        if (config.numberField && action === "create") properties[config.numberField] = { ...properties[config.numberField], description: "Optional; ohne Angabe Vergabe aus dem FEDEO-Nummernkreis." }
+        const tool: McpTool = {
+            name: `masterdata.${config.namespace}.${action}`,
+            title: `${config.label} ${action === "create" ? "anlegen" : action === "update" ? "bearbeiten" : "archivieren"}`,
+            description: `${config.label} im aktiven Mandanten ${action === "create" ? "anlegen" : action === "update" ? "bearbeiten. Nur übergebene Felder werden geändert; null entfernt nullable Werte, Arrays werden ersetzt" : "archivieren"}. Verknüpfungen werden auf Mandantenzugehörigkeit geprüft.`,
+            requiredPermissions: [`masterdata.${config.namespace}.write`],
+            inputSchema: { type: "object", properties, required: action === "create" ? config.required : ["id"], additionalProperties: false },
+            async handler(context, args) {
+                assertToolPermission(context, tool)
+                return mutate(context, config, action, args)
+            },
+        }
+        return tool
+    })
+    if (config.addGet) {
+        const tool: McpTool = {
+            name: `masterdata.${config.namespace}.get`, title: `${config.label} laden`,
+            description: `Lädt ${config.label} des aktiven Mandanten anhand der ID.`,
+            requiredPermissions: [`masterdata.${config.namespace}.read`],
+            inputSchema: { type: "object", properties: { id: identifier(config).schema }, required: ["id"], additionalProperties: false },
+            async handler(context, args) {
+                assertToolPermission(context, tool)
+                const id = identifier(config).parse(args.id, "id")
+                const table = config.table
+                const [result] = await context.server.db.select().from(table)
+                    .where(and(eq(table.id, id), eq(table.tenant, context.tenantId), eq(table.archived, false))).limit(1)
+                if (!result) throw new Error(`${config.label} nicht gefunden oder archiviert`)
+                return { [config.resultKey]: result }
+            },
+        }
+        tools.push(tool)
+    }
+    return tools
+})

backend/src/modules/bootstrap.service.ts

@@ -24,15 +24,25 @@ const adminPermissions = [
     "mcp.tokens.write",
     "staff.time.read_all",
     "masterdata.customers.read",
+    "masterdata.customers.write",
     "masterdata.vendors.read",
+    "masterdata.vendors.write",
     "masterdata.contacts.read",
+    "masterdata.contacts.write",
     "masterdata.products.read",
+    "masterdata.products.write",
     "masterdata.services.read",
+    "masterdata.services.write",
     "masterdata.cost_centres.read",
+    "masterdata.cost_centres.write",
     "masterdata.branches.read",
+    "masterdata.branches.write",
     "masterdata.teams.read",
+    "masterdata.teams.write",
     "masterdata.vehicles.read",
+    "masterdata.vehicles.write",
     "masterdata.inventory_items.read",
+    "masterdata.inventory_items.write",
     "masterdata.units.read",
     "accounting.outgoing_documents.read",
     "accounting.outgoing_documents.write",

backend/src/modules/cost-centre-hierarchy.service.ts

@@ -0,0 +1,56 @@
+import { FastifyInstance } from "fastify"
+import { eq } from "drizzle-orm"
+import { costcentres } from "../../db/schema"
+
+export async function validateCostCentreParent(
+    server: FastifyInstance,
+    tenantId: number,
+    costCentreId: string | null,
+    parentCostcentreId: string | null
+) {
+    if (!parentCostcentreId) {
+        return null
+    }
+
+    const hierarchyRows = await server.db
+        .select({
+            id: costcentres.id,
+            parentCostcentre: costcentres.parentCostcentre,
+        })
+        .from(costcentres)
+        .where(eq(costcentres.tenant, tenantId))
+
+    const hierarchyMap = new Map(
+        hierarchyRows.map((row) => [row.id, row.parentCostcentre || null])
+    )
+
+    if (!hierarchyMap.has(parentCostcentreId)) {
+        return "Die übergeordnete Kostenstelle wurde nicht gefunden."
+    }
+
+    if (costCentreId && parentCostcentreId === costCentreId) {
+        return "Eine Kostenstelle kann nicht sich selbst als übergeordnete Kostenstelle haben."
+    }
+
+    if (!costCentreId) {
+        return null
+    }
+
+    let currentParentId: string | null = parentCostcentreId
+    const visited = new Set<string>()
+
+    while (currentParentId) {
+        if (currentParentId === costCentreId) {
+            return "Die ausgewählte übergeordnete Kostenstelle würde einen Zyklus erzeugen."
+        }
+
+        if (visited.has(currentParentId)) {
+            break
+        }
+
+        visited.add(currentParentId)
+        currentParentId = hierarchyMap.get(currentParentId) || null
+    }
+
+    return null
+}

backend/src/routes/resources/main.ts

@@ -1,3 +1,4 @@
+import { validateCostCentreParent } from "../../modules/cost-centre-hierarchy.service"
 import { FastifyInstance } from "fastify"
 import {
     eq,
@@ -13,7 +14,6 @@ import {
 
 import {
     authProfiles,
-    costcentres,
     createddocuments,
     customers,
     entitybankaccounts,
@@ -324,58 +324,6 @@ function validateMemberPayload(payload: Record<string, any>) {
     return null
 }
 
-async function validateCostCentreParent(
-    server: FastifyInstance,
-    tenantId: number,
-    costCentreId: string | null,
-    parentCostcentreId: string | null
-) {
-    if (!parentCostcentreId) {
-        return null
-    }
-
-    const hierarchyRows = await server.db
-        .select({
-            id: costcentres.id,
-            parentCostcentre: costcentres.parentCostcentre,
-        })
-        .from(costcentres)
-        .where(eq(costcentres.tenant, tenantId))
-
-    const hierarchyMap = new Map(
-        hierarchyRows.map((row) => [row.id, row.parentCostcentre || null])
-    )
-
-    if (!hierarchyMap.has(parentCostcentreId)) {
-        return "Die übergeordnete Kostenstelle wurde nicht gefunden."
-    }
-
-    if (costCentreId && parentCostcentreId === costCentreId) {
-        return "Eine Kostenstelle kann nicht sich selbst als übergeordnete Kostenstelle haben."
-    }
-
-    if (!costCentreId) {
-        return null
-    }
-
-    let currentParentId: string | null = parentCostcentreId
-    const visited = new Set<string>()
-
-    while (currentParentId) {
-        if (currentParentId === costCentreId) {
-            return "Die ausgewählte übergeordnete Kostenstelle würde einen Zyklus erzeugen."
-        }
-
-        if (visited.has(currentParentId)) {
-            break
-        }
-
-        visited.add(currentParentId)
-        currentParentId = hierarchyMap.get(currentParentId) || null
-    }
-
-    return null
-}
 
 function maskIban(iban: string) {
     if (!iban) return ""

backend/tests/mcpMasterdata.test.ts

@@ -0,0 +1,245 @@
+import assert from "node:assert/strict"
+import test from "node:test"
+import { getTableColumns, getTableName } from "drizzle-orm"
+import { PgDialect } from "drizzle-orm/pg-core"
+import * as schema from "../db/schema"
+import { mcpToolMap } from "../src/mcp/registry"
+import { masterdataWriteConfigs, prepareMasterdataInput } from "../src/mcp/tools/masterdataWrites"
+import { asToolResult } from "../src/mcp/result"
+
+const tenantId = 7
+const userId = "00000000-0000-4000-8000-000000000001"
+const parentId = "00000000-0000-4000-8000-000000000002"
+const childId = "00000000-0000-4000-8000-000000000003"
+const otherId = "00000000-0000-4000-8000-000000000004"
+const dialect = new PgDialect()
+
+/** Transactional fixture which evaluates actual Drizzle WHERE clauses, including tenant filters. */
+function fixture(initial: Record<string, any[]> = {}) {
+    let state = structuredClone(initial)
+    const statements: string[] = []
+    let failHistory = false
+    const matches = (table: any, where: any, row: any): boolean => {
+        if (!where) return true
+        const query = dialect.sqlToQuery(where)
+        statements.push(query.sql)
+        const columns = getTableColumns(table) as Record<string, any>
+        const keyFor = (name: string) => Object.keys(columns).find((key) => columns[key].name === name)!
+        const predicates = [...query.sql.matchAll(/"\w+"\."(\w+)" (?:= \$(\d+)|in \(([^)]+)\))/g)]
+        assert.ok(predicates.length, `Unimplemented fixture predicate: ${query.sql}`)
+        return predicates.every((match) => {
+            const value = row[keyFor(match[1])]
+            if (match[2]) return value === query.params[Number(match[2]) - 1]
+            return [...match[3].matchAll(/\$(\d+)/g)].some((parameter) => value === query.params[Number(parameter[1]) - 1])
+        })
+    }
+    const rowsFor = (table: any) => state[getTableName(table)] ||= []
+    const db: any = {
+        execute: async () => undefined,
+        transaction: async (callback: any) => {
+            const before = structuredClone(state)
+            try { return await callback(db) } catch (error) { state = before; throw error }
+        },
+        select: (selection?: Record<string, any>) => ({ from: (table: any) => {
+            let condition: any
+            let limit = Infinity
+            const query: any = {
+                where: (where: any) => { condition = where; return query },
+                limit: (value: number) => { limit = value; return query },
+                for: () => query,
+                then: (resolve: any, reject: any) => Promise.resolve().then(() => {
+                    const rows = rowsFor(table).filter((row) => matches(table, condition, row)).slice(0, limit)
+                    const columns = getTableColumns(table)
+                    return rows.map((row) => selection ? Object.fromEntries(Object.entries(selection).map(([key, column]) => {
+                        const field = Object.keys(columns).find((name) => columns[name] === column)!
+                        return [key, row[field]]
+                    })) : { ...row })
+                }).then(resolve, reject),
+            }
+            return query
+        } }),
+        insert: (table: any) => ({ values: (data: any) => {
+            let completed = false
+            let created: any
+            const run = () => {
+                if (!completed) {
+                    if (failHistory && table === schema.historyitems) throw new Error("History unavailable")
+                    const id = table === schema.costcentres ? otherId : Math.max(0, ...rowsFor(table).map((row) => typeof row.id === "number" ? row.id : 0)) + 1
+                    created = { id, archived: false, ...data }
+                    rowsFor(table).push(created)
+                    completed = true
+                }
+                return [created]
+            }
+            return { returning: async () => run(), then: (resolve: any, reject: any) => Promise.resolve().then(run).then(resolve, reject) }
+        } }),
+        update: (table: any) => ({ set: (data: any) => ({ where: (where: any) => {
+            let result: any[] | undefined
+            const run = () => {
+                if (!result) result = rowsFor(table).filter((row) => matches(table, where, row)).map((row) => { Object.assign(row, data); return { ...row } })
+                return result
+            }
+            return { returning: async () => run(), then: (resolve: any, reject: any) => Promise.resolve().then(run).then(resolve, reject) }
+        } }) }),
+    }
+    const context: any = { server: { db, log: { warn: () => undefined } }, tenantId, userId, isAdmin: true, permissions: [] }
+    return { context, rows: (table: any) => rowsFor(table), statements, failHistory: () => { failHistory = true } }
+}
+const call = async (context: any, name: string, args: Record<string, any>) => {
+    const tool = mcpToolMap.get(`masterdata.${name}`)
+    assert.ok(tool, name)
+    return await tool.handler(context, args) as any
+}
+
+for (const config of masterdataWriteConfigs) {
+    test(`${config.namespace}: create, update and archive are scoped and attribute changes to the actor`, async () => {
+        const f = fixture({ units: [{ id: 1 }], services: [], products: [], hourrates: [] })
+        const input: any = config.resource === "contacts" ? { firstName: "Ada", lastName: "Lovelace" } : { name: "Test" }
+        if (config.numberField) input[config.numberField] = "MCP-100"
+        if (config.resource === "products") input.unit = 1
+        const created = await call(f.context, `${config.namespace}.create`, input)
+        const record = created[config.resultKey]
+        assert.equal(record.tenant, tenantId)
+        assert.equal(record.archived, false)
+        assert.equal(record.updatedBy || record.updated_by, userId)
+        const update = config.resource === "contacts" ? { firstName: "Grace", lastName: "Hopper" } : { name: "Changed" }
+        const updated = await call(f.context, `${config.namespace}.update`, { id: record.id, ...update })
+        assert.equal(updated[config.resultKey][config.resource === "contacts" ? "fullName" : "name"], config.resource === "contacts" ? "Grace Hopper" : "Changed")
+        const confirmation = await call(f.context, `${config.namespace}.archive`, { id: record.id })
+        assert.deepEqual(asToolResult(confirmation).structuredContent, { id: record.id, success: true, action: "archived" })
+        assert.equal(f.rows(config.table)[0].archived, true)
+        await assert.rejects(call(f.context, `${config.namespace}.update`, { id: record.id, ...update }), /archiviert/)
+    })
+
+    test(`${config.namespace}: rejects missing permissions, foreign records and injected system fields`, async () => {
+        const id = config.resource === "costcentres" ? parentId : 1
+        const f = fixture({ [getTableName(config.table)]: [{ id, tenant: 8, archived: false, name: "Other tenant" }] })
+        const fields = config.resource === "contacts" ? { firstName: "Changed" } : { name: "Changed" }
+        await assert.rejects(call(f.context, `${config.namespace}.update`, { id, ...fields }), /nicht gefunden/)
+        await assert.rejects(call(f.context, `${config.namespace}.archive`, { id }), /nicht gefunden/)
+        assert.equal(f.rows(config.table)[0].archived, false)
+        for (const key of ["tenant", "createdAt", "updatedBy", "updated_by", "archived"]) {
+            await assert.rejects(call(f.context, `${config.namespace}.update`, { id, [key]: "injected" }), /unbekanntes Feld/)
+        }
+        f.context.isAdmin = false
+        f.context.permissions = [`masterdata.${config.namespace}.read`]
+        await assert.rejects(call(f.context, `${config.namespace}.archive`, { id }), /Fehlende Berechtigung/)
+        f.context.permissions.push(`masterdata.${config.namespace}.write`)
+        await assert.rejects(call(f.context, `${config.namespace}.archive`, { id }), /nicht gefunden/)
+    })
+}
+
+test("numbered resources allocate numbers, skip occupied values and reject duplicates", async () => {
+    for (const config of masterdataWriteConfigs.filter((item) => item.numberField)) {
+        const f = fixture({
+            tenants: [{ id: tenantId, numberRanges: { [config.resource]: { prefix: "K-", nextNumber: 1 } } }],
+            [getTableName(config.table)]: [{ id: config.resource === "costcentres" ? parentId : 10, tenant: tenantId, [config.numberField!]: "K-1", archived: true }],
+        })
+        const result = await call(f.context, `${config.namespace}.create`, { name: "New" })
+        assert.equal(result[config.resultKey][config.numberField!], "K-2")
+        assert.equal(f.rows(schema.tenants)[0].numberRanges[config.resource].nextNumber, 3)
+        await assert.rejects(call(f.context, `${config.namespace}.create`, { name: "Duplicate", [config.numberField!]: "K-1" }), /bereits vergeben/)
+    }
+})
+
+test("cost centre hierarchy rejects self, descendants, foreign and archived parents", async () => {
+    const f = fixture({ costcentres: [
+        { id: parentId, tenant: tenantId, name: "Parent", number: "1", parentCostcentre: null, archived: false },
+        { id: childId, tenant: tenantId, name: "Child", number: "2", parentCostcentre: parentId, archived: false },
+        { id: otherId, tenant: 8, name: "Foreign", archived: false },
+    ] })
+    await assert.rejects(call(f.context, "cost_centres.update", { id: parentId, parentCostcentre: parentId }), /sich selbst/)
+    await assert.rejects(call(f.context, "cost_centres.update", { id: parentId, parentCostcentre: childId }), /Zyklus/)
+    await assert.rejects(call(f.context, "cost_centres.update", { id: parentId, parentCostcentre: otherId }), /nicht verfügbar/)
+    f.rows(schema.costcentres)[1].archived = true
+    await assert.rejects(call(f.context, "cost_centres.update", { id: parentId, parentCostcentre: childId }), /nicht verfügbar/)
+    const result = await call(f.context, "cost_centres.update", { id: parentId, parentCostcentre: null })
+    assert.equal(result.costCentre.parentCostcentre, null)
+    assert.equal(f.rows(schema.costcentres)[1].parentCostcentre, parentId)
+})
+
+test("all declared relationships reject foreign-tenant references before insert", async () => {
+    for (const config of masterdataWriteConfigs) {
+        for (const reference of config.references || []) {
+            if (reference.table === schema.units) continue
+            const refId = (reference.table[reference.idKey || "id"].columnType === "PgUUID") ? parentId : 99
+            const initial = { [getTableName(reference.table)]: [{ [reference.idKey || "id"]: refId, [reference.tenantKey || "tenant"]: 8, archived: false, active: true }], units: [{ id: 1 }] }
+            const f = fixture(initial)
+            const input: any = config.resource === "contacts" ? { fullName: "Contact" } : { name: "Record" }
+            if (config.resource === "products") input.unit = 1
+            if (config.numberField) input[config.numberField] = "N-1"
+            const parts = reference.field.split(".")
+            if (parts.length === 1) {
+                input[parts[0]] = ["profiles", "productcategories", "servicecategories"].includes(parts[0]) ? [refId] : refId
+            } else if (parts[0] === "infoData") input.infoData = { bankAccountIds: [refId] }
+            else input[parts[0]] = [{ [parts[1]]: refId }]
+            await assert.rejects(call(f.context, `${config.namespace}.create`, input), /nicht verfügbar/, `${config.namespace}.${reference.field}`)
+        }
+    }
+})
+
+test("partial updates preserve unrelated fields and nullable links can be cleared", async () => {
+    const f = fixture({ customers: [{ id: 1, tenant: tenantId, name: "Existing", archived: false, customerNumber: "C-1", infoData: { email: "old@example.org", city: "Berlin" } }] })
+    const result = await call(f.context, "customers.update", { id: 1, infoData: { email: "new@example.org" }, notes: null })
+    assert.deepEqual(result.customer.infoData, { email: "new@example.org", city: "Berlin" })
+    assert.equal(result.customer.name, "Existing")
+    assert.equal(result.customer.notes, null)
+})
+
+test("failed history write rolls back record creation and number range consumption", async () => {
+    const f = fixture({ tenants: [{ id: tenantId, numberRanges: { customers: { prefix: "C-", nextNumber: 1 } } }] })
+    f.failHistory()
+    await assert.rejects(call(f.context, "customers.create", { name: "Rollback" }), /History unavailable/)
+    assert.equal(f.rows(schema.customers).length, 0)
+    assert.equal(f.rows(schema.tenants)[0].numberRanges.customers.nextNumber, 1)
+})
+
+test("product prices propagate to composed services in the same transaction", async () => {
+    const f = fixture({
+        products: [{ id: 1, tenant: tenantId, name: "Product", unit: 1, selling_price: 10, purchase_price: 5, archived: false }],
+        services: [{ id: 2, tenant: tenantId, name: "Service", archived: false, materialComposition: [{ product: 1, quantity: 2 }], personalComposition: [], priceUpdateLocked: false }],
+        hourrates: [],
+    })
+    await call(f.context, "products.update", { id: 1, selling_price: 20 })
+    assert.equal(f.rows(schema.services)[0].sellingPriceComposed.total, 40)
+    assert.equal(f.rows(schema.services)[0].purchasePriceComposed.total, 10)
+})
+
+test("validates scalar types, required values, dates and empty updates", () => {
+    const config = (name: string) => masterdataWriteConfigs.find((item) => item.namespace === name)!
+    assert.throws(() => prepareMasterdataInput(config("products"), "create", { name: "Article" }), /unit ist erforderlich/)
+    assert.throws(() => prepareMasterdataInput(config("cost_centres"), "update", { id: "invalid", name: "Cost centre" }), /UUID/)
+    assert.throws(() => prepareMasterdataInput(config("cost_centres"), "update", { id: parentId, name: " " }), /nicht leer/)
+    assert.throws(() => prepareMasterdataInput(config("customers"), "update", { id: 1 }), /Mindestens ein/)
+    for (const active of ["false", 0, null]) assert.throws(() => prepareMasterdataInput(config("customers"), "update", { id: 1, active }), /Boolean/)
+    for (const birthday of ["2026-02-30", "not a date"]) assert.throws(() => prepareMasterdataInput(config("contacts"), "update", { id: 1, birthday }), /Datum|Kalenderdatum/)
+    assert.throws(() => prepareMasterdataInput(config("products"), "update", { id: 1, selling_price: "20" }), /Zahl/)
+    assert.throws(() => prepareMasterdataInput(config("cost_centres"), "update", { id: parentId, profiles: ["invalid"] }), /UUID/)
+})
+
+test("manual service price updates replace the previous composed total, including zero", async () => {
+    const f = fixture({ services: [{
+        id: 1, tenant: tenantId, name: "Manual", archived: false, sellingPrice: 10,
+        sellingPriceComposed: { total: 10 }, materialComposition: [], personalComposition: [],
+    }], products: [], hourrates: [] })
+    for (const price of [20, 0]) {
+        const result = await call(f.context, "services.update", { id: 1, sellingPrice: price })
+        assert.equal(result.service.sellingPrice, price)
+        assert.equal(result.service.sellingPriceComposed.total, price)
+    }
+    await assert.rejects(call(f.context, "services.update", { id: 1, sellingPrice: 20, sellingPriceComposed: { total: 30 } }), /widersprechen/)
+})
+
+for (const config of masterdataWriteConfigs.filter((item) => item.addGet)) {
+    test(`${config.namespace}.get: returns only an active record from the current tenant`, async () => {
+        const f = fixture({ [getTableName(config.table)]: [
+            { id: 1, tenant: tenantId, archived: false, name: "Active" },
+            { id: 2, tenant: 8, archived: false, name: "Foreign" },
+            { id: 3, tenant: tenantId, archived: true, name: "Archived" },
+        ] })
+        assert.equal((await call(f.context, `${config.namespace}.get`, { id: 1 }))[config.resultKey].name, "Active")
+        for (const id of [2, 3]) await assert.rejects(call(f.context, `${config.namespace}.get`, { id }), /nicht gefunden/)
+        f.context.isAdmin = false
+        await assert.rejects(call(f.context, `${config.namespace}.get`, { id: 1 }), /Fehlende Berechtigung/)
+    })
+}

docs/technik/mcp.md

@@ -17,3 +17,48 @@ Auch `accounting.incoming_invoices.files.list` ist paginiert. Archivierte Eintr
 ## Ausgangsbeleg-Schemas
 
 `tools/list` beschreibt die Unterfelder von `rows`, `address` und `report` für Beleg-Erstellung und -Bearbeitung sowie Positionen und Report beim Finalisieren. Positionen verwenden `costCentre`, der Beleg selbst `costcentre`. `unit` ist die numerische Einheiten-ID. Preise werden numerisch übergeben. Reportwerte liefert der Aufrufer; MCP berechnet sie nicht. Zusätzliche modulspezifische Objektfelder bleiben zulässig.
+
+## Stammdaten und Kostenstellen
+
+Die folgenden Namensräume besitzen jeweils `create`, `update` und `archive`:
+
+| Namensraum nach `masterdata.` | Anlegen: Pflichtfelder | Automatischer Nummernkreis |
+| --- | --- | --- |
+| `customers` | `name` | `customerNumber` |
+| `vendors` | `name` | `vendorNumber` |
+| `contacts` | `fullName` oder `firstName`/`lastName` | – |
+| `products` | `name`, `unit` | – |
+| `services` | `name` | – |
+| `cost_centres` | `name` | `number` |
+| `branches` | `name` | `number` |
+| `teams` | `name` | – |
+| `vehicles` | `name` | – |
+| `inventory_items` | `name` | `articleNumber` |
+
+Nummernfelder sind beim Anlegen optional; ohne Angabe wird der bestehende Mandanten-Nummernkreis verwendet. Dieser muss in FEDEO eingerichtet sein. Bereits belegte Nummern werden übersprungen; explizite doppelte Nummern werden abgewiesen, auch wenn der vorhandene Eintrag archiviert ist.
+
+`update` verlangt `id` und mindestens ein bearbeitbares Feld. Kostenstellen verwenden UUIDs, die übrigen Bereiche numerische IDs. Nur angegebene Felder werden geändert. Nullable Felder lassen sich mit `null` leeren, Arrays werden vollständig ersetzt. Die Unterfelder von `infoData` werden beim Update zusammengeführt. Systemfelder wie Mandant, ID beim Anlegen, Archivstatus und Änderungsautor sind nicht frei schreibbar.
+
+Beispiel zum Anlegen einer Kostenstelle:
+
+```json
+{"name":"masterdata.cost_centres.create","arguments":{"name":"Werkstatt","description":"Kosten der Werkstatt","branch":3}}
+```
+
+Über `cost_centres.update` lassen sich `parentCostcentre`, `project`, `branch`, `vehicle`, `inventoryitem` und `profiles` pflegen. Eltern müssen zum aktiven Mandanten gehören und dürfen nicht archiviert sein; Selbstbezüge und neue Hierarchie-Zyklen werden abgewiesen. Die HTTP-Ressourcenroute und MCP verwenden denselben Hierarchieprüfer.
+
+Fremdschlüssel und bekannte Verknüpfungen in JSON-Feldern werden auf Mandantenzugehörigkeit und Verfügbarkeit geprüft. Globale Mengeneinheiten bleiben lesbar; es werden keine Schreibwerkzeuge für diese mandantenübergreifenden Daten registriert.
+
+Artikel- und Leistungsänderungen stoßen die bestehende Leistungspreisberechnung an. Bei zusammengesetzten Leistungen stammen Preise aus der Zusammensetzung; für eine manuelle Preisvorgabe die Leistung mit `priceUpdateLocked: true` sperren. Manuelle `sellingPrice`-Werte werden mit `sellingPriceComposed.total` synchronisiert.
+
+Schreibvorgänge einschließlich Nummernvergabe und Preisberechnung laufen in einer Transaktion. Historieneinträge werden über den vorhandenen History-Service erstellt; für Niederlassungen und Teams unterstützt dieser derzeit keine entitätsbezogene Historie. Die Änderungsfelder enthalten auch dort den ausführenden Benutzer und Zeitpunkt. Archivieren liefert `{ "id": ..., "success": true, "action": "archived" }`; der archivierte Datensatz wird entsprechend der MCP-Regel nicht zurückgegeben.
+
+Zusätzlich verfügbar: `masterdata.customers.search` sowie `get` für Kontakte, Niederlassungen, Teams und Fahrzeuge. Die vorhandene Kundensuche unter `organisation.customers.search` bleibt erhalten.
+
+### Berechtigungen
+
+Schreibwerkzeuge benötigen `masterdata.<Namensraum>.write`, lesende Werkzeuge `.read`. Die neuen Schreibrechte sind in den Bootstrap-Administratorrechten enthalten. Bestehende Nicht-Administratorrollen erhalten nicht automatisch Schreibzugriff; ihnen müssen die gewünschten Rechte ausdrücklich zugewiesen werden. Globale Administratoren verwenden die bestehende Admin-Ausnahme.
+
+### Verifikation
+
+Die MCP-Tests prüfen unter anderem seitenweisen Abruf, Tenant-Filter in den erzeugten SQL-Abfragen, Create/Update/Archive, unbekannte Systemfelder, Fremdmandanten-Verknüpfungen, Kostenstellen-Zyklen, Nummernkollisionen, Transaktions-Rollback und die Preisneuberechnung. Die Datenbanktests verwenden isolierte Fixtures bzw. den Drizzle-Proxy; sie schreiben keine produktiven Daten.