feat: Incorporate optional and nullable properties into generated types

Update to @seamapi/blueprint@0.60.0, which adds isOptional and
isNullable properties to the blueprint, and update the codegen to
generate types that accurately reflect optionality and nullability:

- Compute isOptionalParamsOk from the blueprint request parameters
  instead of falling back to true. Endpoint methods now require the
  parameters argument when an endpoint has required parameters.
- Generate response types directly from RouteResponse instead of
  wrapping in SetNonNullable<Required<...>>, which stripped the
  optional and nullable markers from response keys that are genuinely
  optional or nullable (e.g., /events/get may return either event or
  message). Remove the now-unused SetNonNullable helper type.
- Update to @seamapi/types@1.974.0 and regenerate all routes.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013ymgiD6xCZXPhepJy9Fprz

Author: claude

codegen/layouts/partials/route-class-endpoint-export.hbs

@@ -8,9 +8,7 @@ export type {{legacyRequestTypeName}} = {{parametersTypeName}}
 /**
  * @deprecated Use {{requestTypeName}} instead.
  */
-export type {{responseTypeName}} = SetNonNullable<
-  Required<RouteResponse<'{{path}}'>>
->
+export type {{responseTypeName}} = RouteResponse<'{{path}}'>
 
 export type {{requestTypeName}} = SeamHttpRequest<{{#if returnsVoid}}void, undefined{{else}}{{responseTypeName}}, '{{responseKey}}'{{/if}}>
 

codegen/layouts/partials/route-imports.hbs

@@ -4,7 +4,6 @@ import type {
   RouteRequestParams,
   RouteResponse,
 } from '@seamapi/types/connect'
-import type { SetNonNullable } from 'lib/types.js'
 
 import {
   getAuthHeadersForClientSessionToken,

codegen/lib/layouts/route.ts

@@ -113,9 +113,9 @@ export const getEndpointLayoutContext = (
     responseTypeName: `${prefix}Response`,
     optionsTypeName: `${prefix}Options`,
     requestTypeName: `${prefix}Request`,
-    // UPSTREAM: Needs support in blueprint, fallback to true for now.
-    // https://github.com/seamapi/blueprint/issues/205
-    isOptionalParamsOk: true,
+    isOptionalParamsOk: endpoint.request.parameters.every(
+      (parameter) => !parameter.isRequired,
+    ),
     isUndocumented: endpoint.isUndocumented,
     ...getResponseContext(endpoint),
   }

package-lock.json

@@ -86,7 +86,7 @@
     "npm": ">=10.9.4"
   },
   "peerDependencies": {
-    "@seamapi/types": "^1.941.0"
+    "@seamapi/types": "^1.974.0"
   },
   "peerDependenciesMeta": {
     "@seamapi/types": {
@@ -99,10 +99,10 @@
     "axios-retry": "^4.4.2"
   },
   "devDependencies": {
-    "@seamapi/blueprint": "^0.52.2",
+    "@seamapi/blueprint": "^0.60.0",
     "@seamapi/fake-seam-connect": "^1.77.0",
     "@seamapi/smith": "^0.5.2",
-    "@seamapi/types": "1.941.0",
+    "@seamapi/types": "1.974.0",
     "@swc/core": "^1.11.29",
     "@types/jsonwebtoken": "^9.0.6",
     "@types/node": "^24.10.9",