---
id: update-packages-and-dependencies
name: Update packages.md Dependency Structure
status: completed
depends_on: []
scope: narrow
risk: low
impact: component
level: implementation
---

## Description

Update `docs/architecture/packages.md` to reflect the new dependency structure: `@alkhub/core` is removed, hub and spoke import directly from `@alkdev/*` npm packages.

### Key changes

1. Remove `@alkhub/core` section entirely
2. Add sections for the 3 external `@alkdev/*` packages with their exports
3. Update `@alkhub/hub` dependencies: add `@alkdev/operations`, `@alkdev/pubsub`, `@alkdev/taskgraph`; remove `@repeaterjs/repeater` (inlined in pubsub)
4. Update `@alkhub/spoke` dependencies: add `@alkdev/operations`, `@alkdev/pubsub`
5. Update dependency direction: `spoke → @alkdev/operations, @alkdev/pubsub`, `hub → @alkdev/operations, @alkdev/pubsub, @alkdev/taskgraph`
6. Update rules: replace "core is transport-agnostic" with "packages should be transport-agnostic"
7. Note that `ioredis` is now an optional peer dep of `@alkdev/pubsub` (only if Redis ET is used), not a direct dep of hub
8. Note that `@modelcontextprotocol/sdk` is an optional peer dep of `@alkdev/operations` (only if MCP adapter is used)

## Acceptance Criteria

- [ ] `@alkhub/core` section is removed
- [ ] 3 external `@alkdev/*` package sections are documented with exports
- [ ] Hub and spoke dependency lists are updated
- [ ] Dependency direction diagram is updated
- [ ] Rules section reflects new structure (no core package)
- [ ] Storage location decision section still applies (unchanged)

## References

- docs/reviews/core-library-extraction-sync-2026-05-18.md (Section 2.3)