feat(WEB): DatePicker 공통화 및 공정관리/작업자화면 대폭 개선

DatePicker 공통화:
- date-picker.tsx 공통 컴포넌트 신규 추가
- 전체 폼 컴포넌트 DatePicker 통일 적용 (50+ 파일)
- DateRangeSelector 개선

공정관리:
- RuleModal 대폭 리팩토링 (-592줄 → 간소화)
- ProcessForm, StepForm 개선
- ProcessDetail 수정, actions 확장

작업자화면:
- WorkerScreen 기능 대폭 확장 (+543줄)
- WorkItemCard 개선
- types 확장

회계/인사/영업/품질:
- BadDebtDetail, BillDetail, DepositDetail, SalesDetail 등 DatePicker 적용
- EmployeeForm, VacationDialog 등 DatePicker 적용
- OrderRegistration, QuoteRegistration DatePicker 적용
- InspectionCreate, InspectionDetail DatePicker 적용

공사관리/CEO대시보드:
- BiddingDetail, ContractDetail, HandoverReport 등 DatePicker 적용
- ScheduleDetailModal, TodayIssueSection 개선

기타:
- WorkOrderCreate/Edit/Detail/List 개선
- ShipmentCreate/Edit, ReceivingDetail 개선
- calendar, calendarEvents 수정
- datepicker 마이그레이션 체크리스트 추가

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/components/settings/PopupManagement/PopupForm.tsx

@@ -17,6 +17,7 @@ import { PageLayout } from '@/components/organisms/PageLayout';
 import { PageHeader } from '@/components/organisms/PageHeader';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
+import { DatePicker } from '@/components/ui/date-picker';
 import { Label } from '@/components/ui/label';
 import { RadioGroup, RadioGroupItem } from '@/components/ui/radio-group';
 import {
@@ -189,17 +190,15 @@ export function PopupForm({ mode, initialData }: PopupFormProps) {
                 기간 <span className="text-red-500">*</span>
               </Label>
               <div className="flex items-center gap-2">
-                <Input
-                  type="date"
+                <DatePicker
                   value={startDate}
-                  onChange={(e) => setStartDate(e.target.value)}
+                  onChange={(date) => setStartDate(date)}
                   className={errors.startDate ? 'border-red-500' : ''}
                 />
                 <span className="text-muted-foreground">~</span>
-                <Input
-                  type="date"
+                <DatePicker
                   value={endDate}
-                  onChange={(e) => setEndDate(e.target.value)}
+                  onChange={(date) => setEndDate(date)}
                   className={errors.endDate ? 'border-red-500' : ''}
                 />
               </div>