Phase 1: Workflows UI, Dedup/Merge UI, Import/Export UI, Print/PDF

- Workflows UI: full page with definitions/instances tabs, step editor, instance detail with approve/reject
- Dedup/Merge UI: duplicate detection, side-by-side comparison, field-level merge dialog, merge history
- Import/Export UI: import wizard (dry-run preview), export panel (CSV/XLSX), backend export route added
- Print/PDF: PrintButton component, print.css, integrated in Contacts/Calendar/Reports/ContactDetail
- Backend: GET /api/v1/export endpoint, export_companies_csv() service function
- Routes: /workflows, /contacts/dedup, /import-export registered
- Menu items: Workflows, Import/Export, Duplikate added to automation plugin manifest
- IMPLEMENTATION_PLAN.md: audit-corrected plan for all 14 remaining features

frontend/src/api/importExport.ts

@@ -0,0 +1,66 @@
+import { apiClient } from './client';
+
+// ─── Types ──────────────────────────────────────────────────────────────────
+
+export interface ImportResult {
+  total?: number;
+  created?: number;
+  updated?: number;
+  errors?: string[];
+  warnings?: string[];
+  rows?: Record<string, unknown>[];
+  preview?: boolean;
+}
+
+export type EntityType = 'companies' | 'contacts';
+export type ExportFormat = 'csv' | 'xlsx';
+
+// ─── Import ─────────────────────────────────────────────────────────────────
+
+/**
+ * Import a CSV file. When dryRun is true, a preview is returned without
+ * writing to the database.
+ */
+export async function importCsv(
+  file: File,
+  entityType: string,
+  dryRun: boolean
+): Promise<ImportResult> {
+  const url = dryRun ? '/import/preview' : '/import';
+  const formData = new FormData();
+  formData.append('file', file);
+  formData.append('entity_type', entityType);
+
+  const response = await apiClient.post<ImportResult>(url, formData, {
+    headers: { 'Content-Type': 'multipart/form-data' },
+  });
+  return response.data;
+}
+
+// ─── Export ─────────────────────────────────────────────────────────────────
+
+/**
+ * Export data as CSV or XLSX and trigger a browser download.
+ */
+export async function exportData(
+  entityType: string,
+  format: string
+): Promise<void> {
+  const url = `/export?entity_type=${encodeURIComponent(entityType)}&format=${encodeURIComponent(format)}`;
+  const response = await apiClient.get(url, { responseType: 'blob' });
+
+  const blob = new Blob([response.data], {
+    type: format === 'xlsx'
+      ? 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
+      : 'text/csv',
+  });
+
+  const blobUrl = URL.createObjectURL(blob);
+  const link = document.createElement('a');
+  link.href = blobUrl;
+  link.download = `${entityType}_export.${format}`;
+  document.body.appendChild(link);
+  link.click();
+  document.body.removeChild(link);
+  URL.revokeObjectURL(blobUrl);
+}