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/pages/Calendar.tsx

@@ -27,6 +27,7 @@ import { SharingSettings } from '@/components/calendar/SharingSettings';
 import { useCalendarStore, type CalendarViewMode } from '@/store/calendarStore';
 import { usePluginToolbarStore } from '@/store/pluginToolbarStore';
 import { ChevronLeft, ChevronRight, ExternalLink, Info, Plus } from 'lucide-react';
+import { PrintButton } from '@/components/common/PrintButton';
 import {
   fetchCalendars,
   createCalendar,
@@ -596,8 +597,11 @@ export function CalendarPage() {
           data-testid="calendar-view-pane"
         >
           <div className="flex flex-col h-full">
+            <div className="flex items-center justify-end px-3 py-1.5 border-b border-secondary-200" data-no-print>
+              <PrintButton targetId="calendar-view" />
+            </div>
             {renderRangeControls()}
-            <div className="flex-1 overflow-hidden">{renderCalendarView()}</div>
+            <div className="flex-1 overflow-hidden" id="calendar-view">{renderCalendarView()}</div>
           </div>
         </ResizablePanel>