feat: dictate next signer (#1719)

Adds next recipient dictation functionality to document signing flow,
allowing assistants and signers to update the next recipient's
information during the signing process.

## Related Issue

N/A

## Changes Made

- Added form handling for next recipient dictation in signing dialogs
- Implemented UI for updating next recipient information
- Added e2e tests covering dictation scenarios:
  - Regular signing with dictation enabled
  - Assistant role with dictation
  - Parallel signing flow
  - Disabled dictation state

## Testing Performed

- Added comprehensive e2e tests covering:
  - Sequential signing with dictation
  - Assistant role dictation
  - Parallel signing without dictation
  - Form validation and state management
- Tested on Chrome and Firefox
- Verified recipient state updates in database

packages/lib/types/document.ts

@@ -51,6 +51,7 @@ export const ZDocumentSchema = DocumentSchema.pick({
     documentId: true,
     redirectUrl: true,
     typedSignatureEnabled: true,
+    allowDictateNextSigner: true,
     language: true,
     emailSettings: true,
   }).nullable(),

packages/lib/types/template.ts

@@ -45,6 +45,7 @@ export const ZTemplateSchema = TemplateSchema.pick({
     dateFormat: true,
     signingOrder: true,
     typedSignatureEnabled: true,
+    allowDictateNextSigner: true,
     distributionMethod: true,
     templateId: true,
     redirectUrl: true,

packages/lib/types/webhook-payload.ts

@@ -46,6 +46,7 @@ export const ZWebhookDocumentMetaSchema = z.object({
   dateFormat: z.string(),
   redirectUrl: z.string().nullable(),
   signingOrder: z.nativeEnum(DocumentSigningOrder),
+  allowDictateNextSigner: z.boolean(),
   typedSignatureEnabled: z.boolean(),
   language: z.string(),
   distributionMethod: z.nativeEnum(DocumentDistributionMethod),