refactor(attachment): unify prompt content admission

scripts/gen-cordis-catalog.ts

@@ -359,6 +359,7 @@ export const LINK_MAP: Readonly<Record<string, string>> = {
   ApprovalService: 'approval.md',
   AskUserQuestionRequestEvent: 'user-questions.md',
   AdmittedPromptContentPart: 'attachment.md',
+  AttachmentAdmissionPart: 'attachment.md',
   EncodedFileAttachment: 'attachment.md',
   EncodedImageAttachment: 'attachment.md',
   FileAttachmentRef: 'attachment.md',

scripts/type-equiv.manifest.json

@@ -951,6 +951,11 @@
       "symbol": "PromptContentPart",
       "source": "packages/attachment/attachment/src/types.ts"
     },
+    {
+      "doc": "docs/subsystems/attachment.md",
+      "symbol": "AttachmentAdmissionPart",
+      "source": "packages/attachment/attachment/src/types.ts"
+    },
     {
       "doc": "docs/subsystems/attachment.md",
       "symbol": "AdmittedPromptContentPart",