docs(trpc): add openapi descriptions to envelope cancel, delete and update routes (#3134)

## Description

The envelope cancel, delete, and update routes rendered without
descriptions in the generated OpenAPI reference.

## Changes Made

- Added route-level OpenAPI `description` to `cancel-envelope.types.ts`,
`delete-envelope.types.ts`, and `update-envelope.types.ts`.
- Added field-level `.describe()` calls on request schemas, matching the
style of sibling envelope-router schemas (e.g.
`get-envelopes-by-ids.types.ts`, `distribute-envelope.types.ts`).

## Testing Performed

`npx tsc --noEmit -p packages/trpc` passes with no errors. Metadata-only
change — no runtime behavior affected.

packages/trpc/server/envelope-router/cancel-envelope.types.ts

@@ -8,13 +8,14 @@ export const cancelEnvelopeMeta: TrpcRouteMeta = {
     method: 'POST',
     path: '/envelope/cancel',
     summary: 'Cancel envelope',
+    description: 'Cancel a pending envelope',
     tags: ['Envelope'],
   },
 };
 
 export const ZCancelEnvelopeRequestSchema = z.object({
-  envelopeId: z.string(),
-  reason: z.string().optional(),
+  envelopeId: z.string().describe('The ID of the envelope to cancel.'),
+  reason: z.string().describe('The reason for cancelling the envelope.').optional(),
 });
 
 export const ZCancelEnvelopeResponseSchema = ZSuccessResponseSchema;

packages/trpc/server/envelope-router/delete-envelope.types.ts

@@ -8,12 +8,13 @@ export const deleteEnvelopeMeta: TrpcRouteMeta = {
     method: 'POST',
     path: '/envelope/delete',
     summary: 'Delete envelope',
+    description: 'Delete an envelope',
     tags: ['Envelope'],
   },
 };
 
 export const ZDeleteEnvelopeRequestSchema = z.object({
-  envelopeId: z.string(),
+  envelopeId: z.string().describe('The ID of the envelope to delete.'),
 });
 
 export const ZDeleteEnvelopeResponseSchema = ZSuccessResponseSchema;

packages/trpc/server/envelope-router/update-envelope.types.ts

@@ -12,24 +12,32 @@ export const updateEnvelopeMeta: TrpcRouteMeta = {
     method: 'POST',
     path: '/envelope/update',
     summary: 'Update envelope',
+    description: 'Update envelope properties and settings',
     tags: ['Envelope'],
   },
 };
 
 export const ZUpdateEnvelopeRequestSchema = z.object({
-  envelopeId: z.string(),
+  envelopeId: z.string().describe('The ID of the envelope to update.'),
   data: z
     .object({
       title: ZDocumentTitleSchema.optional(),
       externalId: ZDocumentExternalIdSchema.nullish(),
       visibility: ZDocumentVisibilitySchema.optional(),
-      globalAccessAuth: z.array(ZDocumentAccessAuthTypesSchema).optional(),
-      globalActionAuth: z.array(ZDocumentActionAuthTypesSchema).optional(),
-      folderId: z.string().nullish(),
-      templateType: z.nativeEnum(TemplateType).optional(),
+      globalAccessAuth: z
+        .array(ZDocumentAccessAuthTypesSchema)
+        .describe('The authentication methods required to access the envelope.')
+        .optional(),
+      globalActionAuth: z
+        .array(ZDocumentActionAuthTypesSchema)
+        .describe('The authentication methods required to sign the envelope.')
+        .optional(),
+      folderId: z.string().describe('The ID of the folder containing the envelope.').nullish(),
+      templateType: z.nativeEnum(TemplateType).describe('The template type.').optional(),
     })
+    .describe('The envelope properties to update.')
     .optional(),
-  meta: ZDocumentMetaUpdateSchema.optional(),
+  meta: ZDocumentMetaUpdateSchema.describe('The email and signing settings to update.').optional(),
 });
 
 export const ZUpdateEnvelopeResponseSchema = ZEnvelopeLiteSchema;