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/lib/validators/document-templates.ts

@@ -15,13 +15,13 @@ const mergeFieldsSchema = z
   .array(z.string())
   .optional()
   .default([])
-  .refine(
-    (tokens) => tokens.every(isAcceptableMergeToken),
-    (tokens) => {
+  .refine((tokens) => tokens.every(isAcceptableMergeToken), {
+    error: (issue) => {
+      const tokens = issue.input as string[] | undefined;
       const unknown = tokens?.filter((t) => !isAcceptableMergeToken(t)) ?? [];
-      return { message: `Unknown merge tokens: ${unknown.join(', ')}` };
+      return `Unknown merge tokens: ${unknown.join(', ')}`;
     },
-  );
+  });
 
 export const templateFormats = ['html', 'pdf_form', 'pdf_overlay', 'documenso_render'] as const;
 
@@ -104,18 +104,18 @@ export const tiptapDocumentTypes = [
 export const createAdminTemplateSchema = z.object({
   name: z.string().min(1).max(200),
   type: z.enum(tiptapDocumentTypes),
-  content: z.record(z.unknown()), // TipTap JSON document
+  content: z.record(z.string(), z.unknown()), // TipTap JSON document
 });
 
 export const updateAdminTemplateSchema = z.object({
   name: z.string().min(1).max(200).optional(),
-  content: z.record(z.unknown()).optional(),
+  content: z.record(z.string(), z.unknown()).optional(),
   isActive: z.boolean().optional(),
 });
 
 export const previewAdminTemplateSchema = z.object({
-  content: z.record(z.unknown()),
-  sampleData: z.record(z.string()).optional(),
+  content: z.record(z.string(), z.unknown()),
+  sampleData: z.record(z.string(), z.string()).optional(),
 });
 
 export const rollbackAdminTemplateSchema = z.object({