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>

package.json

@@ -31,7 +31,7 @@
     "@dnd-kit/core": "^6.3.1",
     "@dnd-kit/sortable": "^10.0.0",
     "@dnd-kit/utilities": "^3.2.2",
-    "@hookform/resolvers": "^3.10.0",
+    "@hookform/resolvers": "^5.2.2",
     "@pdfme/common": "^6.1.2",
     "@pdfme/generator": "^6.1.2",
     "@pdfme/schemas": "^6.1.2",
@@ -101,7 +101,7 @@
     "tesseract.js": "^7.0.0",
     "vaul": "^1.1.2",
     "web-vitals": "^5.2.0",
-    "zod": "^3.25.76",
+    "zod": "^4.4.3",
     "zustand": "^5.0.13"
   },
   "devDependencies": {
@@ -120,6 +120,7 @@
     "autoprefixer": "^10.5.0",
     "dotenv": "^17.4.2",
     "drizzle-kit": "^0.31.10",
+    "drizzle-zod": "^0.8.3",
     "esbuild": "^0.28.0",
     "eslint": "^9.39.4",
     "eslint-config-next": "15.5.18",