feat: P3 effective configuration, memory root, and revision-scoped records

backend/src/workspaces/preprocessing-service.ts

@@ -30,6 +30,9 @@ export interface WorkspaceOperationResult {
   completedStages: string[];
   counts?: Record<string, number>;
   artifactIdentities?: Array<{ kind: string; digest: string }>;
+  effectiveConfigIdentity?: string;
+  configFingerprint?: string;
+  inputFingerprint?: string;
   /** Suggested FK annotations YAML for the operator to write to --output (schema suggest-fks). */
   suggestedFksYaml?: string;
   warnings?: string[];
@@ -92,6 +95,9 @@ function baseResult(
     descriptorBlob: runtime.descriptorBlob,
     operation,
     completedStages: [],
+    effectiveConfigIdentity: runtime.configLease.effectiveConfigIdentity,
+    configFingerprint: runtime.configLease.configFingerprint,
+    inputFingerprint: runtime.configLease.inputFingerprint,
     ...extra,
   };
 }