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/interests/interest-contact-log-tab.tsx

@@ -42,7 +42,7 @@ import {
   DropdownMenuItem,
   DropdownMenuTrigger,
 } from '@/components/ui/dropdown-menu';
-import { Input } from '@/components/ui/input';
+import { DateTimePicker } from '@/components/ui/date-time-picker';
 import { Label } from '@/components/ui/label';
 import { Checkbox } from '@/components/ui/checkbox';
 import {
@@ -497,12 +497,7 @@ function ComposeDialogBody({
 
           <div className="space-y-1">
             <Label htmlFor="cl-occurred">When did the conversation happen?</Label>
-            <Input
-              id="cl-occurred"
-              type="datetime-local"
-              value={occurredAt}
-              onChange={(e) => setOccurredAt(e.target.value)}
-            />
+            <DateTimePicker id="cl-occurred" value={occurredAt} onChange={setOccurredAt} />
           </div>
 
           <div className="space-y-1">
@@ -588,11 +583,10 @@ function ComposeDialogBody({
                 <Label htmlFor="cl-followup" className="text-xs text-muted-foreground">
                   Remind me on
                 </Label>
-                <Input
+                <DateTimePicker
                   id="cl-followup"
-                  type="datetime-local"
                   value={followUpAt}
-                  onChange={(e) => setFollowUpAt(e.target.value)}
+                  onChange={setFollowUpAt}
                   className="max-w-xs"
                 />
                 <p className="text-[11px] text-muted-foreground">