Promote Alpha to Main

[Yuqing (mydmdm)]

Promotion

Promote the currently integrated Alpha revision to stable main.

• Base: main at c72b101d03eaa294f12fb6d8ea5d4fe32834be77
• Head: alpha at 32dbf180785b6742e7659f06f9e6af2f766664d7
• Current comparison: alpha is 41 commits ahead and 0 commits behind main

Included Alpha pull requests

• Add UI-triggered Alpha Canary redeployment #256 — Add UI-triggered Alpha Canary redeployment
• Fix interactive Canary startup logs #257 — Fix interactive Canary startup logs
• fix(preview): restore nested panel scrolling #258 — Restore nested Preview panel scrolling
• Fix duplicate ACP model selector options #260 — Fix duplicate ACP model selector options
• Reclaim ACP Jobs and configurable agentlet capacity #261 — Reclaim ACP Jobs and configurable Agentlet capacity
• Unify Agent and capability Settings surfaces #263 — Unify Agent and capability Settings surfaces
• Separate Utility Agent from conversation selection #264 — Separate Utility Agent from conversation selection
• Configure shared Agentlet connection token #265 — Configure shared Agentlet connection token
• Manage multiple Agentlet devices and device-scoped Profiles #268 — Manage multiple Agentlet devices and device-scoped Profiles
• Fix hostname-era Agentlet Profile compatibility #271 — Fix hostname-era Agentlet Profile compatibility
• Default Move shortcuts off and configure Canary branch #272 — Default Move shortcuts off and configure Canary branch
• Allow Agent Nodes to override Profile working directories #273 — Allow Agent Nodes to override Profile working directories
• Hide Agent Node working-directory controls behind a popover #274 — Hide Agent Node working-directory controls behind a popover

Related issues

This section records relationships without adding automatic close keywords. Partial and umbrella issues remain open until their complete approved scope is delivered.

Delivered by the included Alpha work

• Add Alpha Canary deployment and automatic upgrade checks #255 — Alpha Canary deployment and automatic upgrade checks
• Reclaim functional ACP Jobs and expose Agentlet capacity controls #235 — Functional ACP Job reclamation and Agentlet capacity controls
• Copilot external Agent model selector shows duplicate and extra models #250 — Duplicate ACP model selector options
• Allow configuring the Agentlet connection token with generated fallback #254 — Configurable Agentlet connection token
• Manage multiple Agentlet devices and device-scoped Profiles #267 — Multi-Agentlet devices, device-scoped Profiles, and hostname-era compatibility
• Allow Agent Nodes to override the selected Profile working directory #269 — Agent Node working-directory override
• Track incremental Move-to and Canary Settings improvements #270 — Move-to default and configurable Canary branch

Partially addressed or progressed

• PDF preview intermittently ignores mouse-wheel scrolling #251 — Related nested Preview scrolling fix; the PDF-specific report remains separate
• Follow-up: Agent lifecycle, unified Settings, Windows discovery, and multi-Agentlet enrollment #253 — Agent/Capabilities Settings and Utility Agent milestones; remaining umbrella scope is tracked independently
• Auto-discovered harness Profiles omit the catalogue allow-all launch mode #223 — Typed automatically discovered Profiles default supported auto-approval and coexist with legacy Profiles, but the issue's requested same-ID legacy command migration/shared command-composition plan was superseded rather than fully delivered
• Support per-conversation external Agent launch overrides #210 — Agent Node working-directory override, inheritance, persistence, validation, and realization locking are delivered; standalone Chat support, broader generic overrides, and remaining target-machine/default semantics are not

Not newly delivered by this promotion

• Unify server-owned Agent Node lifecycle and decouple binding policy #163 — The server-owned Agent Node lifecycle foundation was delivered by feat: unify server-owned Agent Node binding and invocation lifecycle #178 and is already present in main; Allow Agent Nodes to override Profile working directories #273/Hide Agent Node working-directory controls behind a popover #274 reuse that contract but do not constitute a new Unify server-owned Agent Node lifecycle and decouple binding policy #163 delivery

Additional focused issue resolved

• Chat panel ignores vertical wheel over nested overflow content #259 — Nested Preview panel vertical wheel handling

Promotion checks

• Confirm the Canary running revision matches promotion head 32dbf180.
• Confirm the integrated Alpha behavior has been exercised in the Canary environment.
• Required GitHub checks currently pass for promotion head 32dbf180.
• 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, synchronize the resulting main history back into alpha if needed so subsequent promotions retain a clear lineage.