AWS AI-DLC Workflows 2.x

Install and update the GA v2 implementation from the authoritative upstream v2 branch.

Upstream facts

• Source: https://github.com/awslabs/aidlc-workflows/tree/v2.
• GitHub's latest release can still point to v1. Never use the Releases API to select v2.
• Read the framework version from upstream core/tools/aidlc-version.ts; never hardcode it.
• V2 requires bun and uses a new engine, hooks, agents, skills, workspace, and artifact model.
• Upstream has no first-class resumable v1-to-v2 state migration. Issue #636 tracks that work.

Supported harnesses