feat(forms): migrate remaining native date inputs to <DatePicker> / <DateTimePicker>

Sweeps the last ~17 native `<Input type="date"|"datetime-local">`
call sites onto the shared `<DatePicker>` / `<DateTimePicker>`
primitives so date entry is uniform across the app (calendar popover
on desktop, native OS picker on mobile via the primitive's
viewport-aware fallback).

Three patterns handled:

  1. Controlled value/onChange — direct swap to <DatePicker
     value/onChange>:
       audit-log-list.tsx (audit-from / audit-to filters)
       reports/generate-report-form.tsx (date range)
       scan/scan-shell.tsx (expense date)
       reservations/reservation-detail.tsx (end-reservation dialog)
       shared/filter-bar.tsx ('date' filter variant)

  2. RHF `register('field')` pattern — wrapped in <Controller> with
     field.value/field.onChange bridge. The picker's '' → undefined
     normalisation kicks in via `field.onChange(v || undefined)`:
       berths/berth-form.tsx (tenureStartDate + tenureEndDate)
       reservations/berth-reserve-dialog.tsx (startDate)
       companies/add-membership-dialog.tsx (startDate)
       yachts/yacht-transfer-dialog.tsx (effectiveDate)
       invoices/invoice-detail.tsx (paymentDate)

  3. RHF + Date-typed schema — same Controller wrap, plus a
     Date<->YYYY-MM-DD bridge in the render() since the zod schema
     coerces these to Date:
       expenses/expense-form-dialog.tsx (expenseDate)
       companies/company-form.tsx (incorporationDate)

  4. Datetime variants — swapped onto <DateTimePicker>:
       interests/interest-contact-log-tab.tsx (occurredAt + followUpAt)

Skipped because they ARE picker primitives or internal date variants:
  - ui/date-picker.tsx, ui/date-time-picker.tsx (the primitives)
  - shared/inline-editable-field.tsx (the InlineEditableField date variant)
  - dashboard/date-range-picker.tsx (its own popover with min/max gating
    that doesn't map cleanly onto the shared primitive)

Removed now-unused Input imports from four files.

Verified: tsc clean, vitest 1448/1448.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/components/admin/audit/audit-log-list.tsx

@@ -12,6 +12,7 @@ import { PageHeader } from '@/components/shared/page-header';
 import { EmptyState } from '@/components/shared/empty-state';
 import { Badge } from '@/components/ui/badge';
 import { Input } from '@/components/ui/input';
+import { DatePicker } from '@/components/ui/date-picker';
 import { Button } from '@/components/ui/button';
 import { Label } from '@/components/ui/label';
 import {
@@ -530,12 +531,11 @@ export function AuditLogList() {
           <Label htmlFor="audit-from" className="text-xs">
             From
           </Label>
-          <Input
+          <DatePicker
             id="audit-from"
-            type="date"
             className="w-44 h-9"
             value={dateFrom}
-            onChange={(e) => setDateFrom(e.target.value)}
+            onChange={setDateFrom}
           />
         </div>
 
@@ -543,13 +543,7 @@ export function AuditLogList() {
           <Label htmlFor="audit-to" className="text-xs">
             To
           </Label>
-          <Input
-            id="audit-to"
-            type="date"
-            className="w-44 h-9"
-            value={dateTo}
-            onChange={(e) => setDateTo(e.target.value)}
-          />
+          <DatePicker id="audit-to" className="w-44 h-9" value={dateTo} onChange={setDateTo} />
         </div>
 
         {/* M-AU03: CSV export inherits the current filter set. The