feat(customers): add initial admin bootstrap and csv import

frontend/athena/types/customer.ts

@@ -1,6 +1,8 @@
 export type CustomerStatus = "lead" | "active" | "inactive" | "blocked" | "archived";
 export type CustomerType = "company" | "private" | "public_sector" | "partner" | "supplier";
 export type AddressType = "billing" | "shipping" | "primary" | "other";
+export type CustomerImportMode = "create_only" | "update_existing" | "upsert";
+export type CustomerImportAction = "create" | "update" | "skip" | "error";
 
 export interface CustomerAddress {
   id: number;
@@ -87,3 +89,46 @@ export type CustomerContactPayload = {
   is_primary: boolean;
   notes: string;
 };
+
+export interface CustomerImportIssue {
+  row: number;
+  field: string;
+  message: string;
+}
+
+export interface CustomerImportPreviewRow {
+  row: number;
+  customer_number: string;
+  company_name: string;
+  action: CustomerImportAction;
+  errors: CustomerImportIssue[];
+  warnings: CustomerImportIssue[];
+}
+
+export interface CustomerImportSummary {
+  total_rows: number;
+  valid_rows: number;
+  error_count: number;
+  warning_count: number;
+  duplicate_count: number;
+  create_count: number;
+  update_count: number;
+  skip_count: number;
+}
+
+export interface CustomerImportPreviewResponse {
+  mode: CustomerImportMode;
+  summary: CustomerImportSummary;
+  rows: CustomerImportPreviewRow[];
+  errors: CustomerImportIssue[];
+  warnings: CustomerImportIssue[];
+  duplicates: CustomerImportIssue[];
+}
+
+export interface CustomerImportCommitResponse {
+  mode: CustomerImportMode;
+  summary: CustomerImportSummary;
+  created: number;
+  updated: number;
+  skipped: number;
+}

frontend/athena/types/rbac.ts

@@ -30,6 +30,8 @@ export interface RolePayload {
 
 export interface CurrentUser {
   id: number;
+  first_name: string;
+  last_name: string;
   username: string;
   email: string;
   role: string;