feat: operator schema accept command for curated FK review (P5)

backend/src/workspaces/preprocessing-state.ts

@@ -68,6 +68,8 @@ export interface FkReviewRecord {
   reviewedCandidatesDigest: string;
   annotationsDigest: string;
   workspaceRevision: string;
+  /** Curated Git blob id accepted at review time (P5); absent for legacy host-file reviews. */
+  blobId?: string;
 }
 
 function sha256(value: string | Buffer): string {
@@ -171,6 +173,7 @@ function decodeReview(value: unknown): FkReviewRecord {
     typeof record.reviewedCandidatesDigest !== "string"
     || typeof record.annotationsDigest !== "string"
     || typeof record.workspaceRevision !== "string"
+    || (record.blobId !== undefined && typeof record.blobId !== "string")
   ) throw new Error("preprocessing review state is invalid");
   return record as unknown as FkReviewRecord;
 }