Add UploadInfo to the TS contract mirror.

ts/types.ts

@@ -196,3 +196,8 @@ export interface RetrievalHit {
   doc: { id: ID; projectId?: ID; source: string; title: string; ref?: string; chunk: string; createdAt: string };
   score: number; kind: 'fulltext' | 'vector' | 'plugin';
 }
+
+export interface UploadInfo {
+  artifactId: ID; filename: string; mime?: string; size: number;
+  parsed?: ParsedDocument;
+}