feat(deps): bump zod 3→4 + @hookform/resolvers 3→5

Resolved 65 type errors across the codebase via these v4 migration
patterns:

- `ZodError.errors` renamed to `ZodError.issues` (4 call sites in auth
  routes + central error handler).
- `z.record(value)` now requires explicit key type: `z.record(z.string(),
  value)`. Updated 7 sites across templates / forms / saved-views /
  website-inquiries.
- `.refine(check, msgFn)` second-arg shape changed — now requires an
  `{ error: (issue) => ... }` object form. Updated
  `mergeFieldsSchema` in document-templates validator.
- `.transform(...).default(...)` chains: v4 enforces default value type
  matches transform OUTPUT. Reordered to `.default(...).transform(...)`
  in list-query / company-memberships handlers.
- `z.coerce.*()` INPUT type widened to `unknown` in v4. Service signatures
  using `z.input<typeof schema>` (kept for caller flexibility around
  defaults) now re-parse via `schema.parse(data)` to recover the
  post-coercion shape Drizzle needs. Done in berth-reservations service.
  Invoice service narrows `lineItems` locally with a typed cast since
  re-parsing would double-validate.
- `.optional().transform(...)` no longer propagates the optional marker
  through v4's new ZodPipe. Moved `.optional()` to the END of chain in
  `optionalDesiredDimSchema` (interests) and documents list query
  (folderId, signatureOnly).
- ZodIssue subtype shapes simplified: `received` removed from
  invalid_type, `type` renamed to `origin` on too_small. Test fixtures
  updated.
- @hookform/resolvers v5 splits Resolver into 3-generic form (Input,
  Context, Output). useForm calls in 6 forms (client, yacht, berth,
  interest, expense, invoices-new-page) now pass explicit generics:
  `useForm<z.input<typeof schema>, unknown, z.infer<typeof schema>>`.

Verified: tsc clean (0 errors), vitest 1293/1293 pass.

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

src/components/clients/client-form.tsx

@@ -25,6 +25,7 @@ import { TimezoneCombobox } from '@/components/shared/timezone-combobox';
 import { PhoneInput } from '@/components/shared/phone-input';
 import { DedupSuggestionPanel } from '@/components/clients/dedup-suggestion-panel';
 import { apiFetch } from '@/lib/api/client';
+import type { z } from 'zod';
 import { createClientSchema, type CreateClientInput } from '@/lib/validators/clients';
 import { SOURCES } from '@/lib/constants';
 import type { CountryCode } from '@/lib/i18n/countries';
@@ -74,7 +75,7 @@ export function ClientForm({ open, onOpenChange, client, onUseExistingClient }:
     setValue,
     reset,
     formState: { errors, isSubmitting },
-  } = useForm<CreateClientInput>({
+  } = useForm<z.input<typeof createClientSchema>, unknown, CreateClientInput>({
     resolver: zodResolver(createClientSchema),
     defaultValues: {
       fullName: '',