Files
united-workforce/packages/workflow-cas
xiaoju 1e9900bed3 feat(#194): Phase 2 — Engine layer Merkle call stack wiring
- Protocol: AgentFnResult = string | { output, childThread }, RoleOutput.childThread,
  ThreadContext.bundleHash for parent state lookup
- Runtime: create-workflow normalizes AgentFnResult, propagates childThread in RoleOutput
- Engine: ExecuteThreadOptions.parentStateHash, appendStateForStep writes childThread,
  putStartNode uses parentStateHash
- workflowAsAgent: reads parent head state from threads.json, passes parentStateHash
  to child, returns { output, childThread: rootHash }
- Integration test: 4 cases verifying bidirectional Merkle links (306 lines)

Phase 2 of #194 (Merkle Call Stack). Closes #196.

小橘 <xiaoju@shazhou.work>
2026-05-12 02:10:06 +00:00
..

@uncaged/workflow-cas

Content-addressable storage implementation, bundle hashing, and Merkle helpers.

What This Package Does

It implements CasStore from @uncaged/workflow-protocol, hashes workflow bundle bytes and strings with XXH64, and builds serializable Merkle nodes for thread/step/content payloads used when persisting execution artifacts.

Key Exports

From src/index.ts:

  • CAS: createCasStore
  • Hash: hashString, hashWorkflowBundleBytes
  • Merkle: createContentMerkleNode, getContentMerklePayload, parseMerkleNode, putContentMerkleNode, putStepMerkleNode, putThreadMerkleNode, serializeMerkleNode
  • Types: CasStore, MerkleNode, MerkleNodeType, StepMerklePayload, ThreadMerklePayload

Dependencies

  • Workspace: @uncaged/workflow-protocol (CasStore contract), @uncaged/workflow-util
  • npm: xxhashjs, yaml

Usage

import { createCasStore, hashWorkflowBundleBytes } from "@uncaged/workflow-cas";
import { getGlobalCasDir } from "@uncaged/workflow-util";

const store = createCasStore(getGlobalCasDir());
const hash = await hashWorkflowBundleBytes(esmJsBytes);