Promote Alpha to Main

[Yuqing (mydmdm)]

Promotion

Promote the currently integrated Alpha revision to stable main.

• Base: main at dc0cfa993a6a22dddd7f876ae8088836a5666cbf
• Head: alpha at b2cbf9f39c91600ae277f072f19112a66bd95ebf
• Current comparison: alpha is 7 commits ahead and 0 commits behind main

Included Alpha pull requests

• Fix Windows ACP wrapper resolution #281 — Fix Windows ACP wrapper resolution
• Fix remote Agent RFS public origin #282 — Fix remote Agent RFS public origin

Related issues

This section records delivery relationships without adding new automatic close keywords.

Delivered

• Windows: detected ACP CLI wrappers are disabled in the structured harness picker #249 — Windows ACP wrapper discovery and structured launch resolution
• Hotfix remote Agent RFS reachback to use a reachable public origin #280 — Reachable public origin for remote Agent RFS and Agentlet connections

Issue #280 is already closed. Issue #249 remains open pending explicit closure reconciliation.

Promotion checks

• Confirm the Canary running revision matches promotion head b2cbf9f3.
• Confirm Windows ACP wrapper discovery and launch behavior has been exercised in the intended Canary environment.
• Confirm remote connected Agent reachback uses the configured HUABU_PUBLIC_ORIGIN and can access its Canvas RFS endpoint.
• Delivery PR required checks passed for Fix Windows ACP wrapper resolution #281 and Fix remote Agent RFS public origin #282.
• Wait for all required GitHub checks on this promotion head to pass.
• Review the complete main...alpha diff before manual merge.

Canary use is additional end-to-end evidence only. It does not replace automated tests, CI, review, documentation, or release validation. This PR does not enable auto-merge and must be merged manually after the promotion checks are satisfied.

After merge, fast-forward alpha to the resulting main promotion commit before starting the next Alpha cycle.