Builds on [#419](https://github.com/githubnext/chopin/pull/419). A teammate can review a settled plan’s tasks, choose their paired workspace, and select **Approve and build this plan**. Approval durably binds the reviewed document, graph and checkout; the shared ACP connector starts an isolated local session and claims the graph before prompting the orchestrator. The interface shows dependencies, task states, blockers, session identity and per-task PR links after refresh.

The connector instructs the orchestrator to use sub-agents and produce small reviewable PRs. Its MCP credential fixes the document and run and exposes only implementation reads and lifecycle reports. Investigations and implementations share pairing, worktrees and workspace reservation. HTTP is selected when advertised by the ACP agent, with a stdio bridge otherwise; this handles the installed Copilot ACP version’s rejection of stdio MCP configuration.

A real Copilot session read the approved graph and reported the blocker shown below through MCP. Scripted browser tests cover both transports, persisted blockers, two reported PRs and successful verification. Real coding, parallel sub-agent delivery and actual multi-PR creation remain unvalidated. Automatic connector startup, implementation-decision resolution/resume, a graphical DAG and browser PR-creation controls remain follow-up slices.

[Discussion outline in Chopin](https://chopin.githubnext.com/documents/githubnext/chopin/build-plans-with-local-coding-agents) · [Setup and recovery](https://github.com/githubnext/chopin/blob/feat/local-launcher-tracer/docs/local-launcher.md)

Validation: focused task/MCP/connector tests; workspace and E2E type checks; repository CI; production browser pairing/build tests; opt-in real Copilot ACP tracer. No PRs were merged.

The earlier tracer screenshot below predates the Build-dialog review changes; it shows a real session’s saved blocker and its dependent task waiting.


## Rebase and design-review follow-up Rebased onto `2182c95` after #419 merged. The branch now contains only the implementation increment and its follow-up fixes.

- Move implementation review into the explicit **Build** dialog, preserving the ordinary document layout. - Replace permanent two-second polling with initial snapshots and committed change notifications. Editing locks remain current when the dialog is closed and after reconnect. - Add explicit, idempotent retry for failed startup and **Return plan for changes** for a stopped claimed run; no automatic replay. - Wake the connector after durable enqueue, reject duplicate approvals that silently change owner/checkout, and exit cleanly on intentional disconnect. - Local verification: 4,294 unit tests passed, 4 skipped; the formerly failing viewport/comment cases and focus-restoration case passed; both MCP transports, startup retry and stopped-run recovery passed; types and repository CI checks passed.

A fresh deployed-preview report will follow. The live test will use the existing sandbox permissions and validate blocker/recovery behavior; real multi-PR creation remains outside that validation.

The preview deployment for **chopin** failed. 🔴

[Open Build Logs](https://next-appserver.tail49836a.ts.net/project/l9buznc9ua1if0vflxrjwajs/environment/lxqsvczv19eopxk29vfb46mj/application/hb85gdd9mwqqlfwcteflvpbj/deployment/koecmxebseoo8f4u7rnbrhh7) | [Open Application Logs](https://next-appserver.tail49836a.ts.net/project/l9buznc9ua1if0vflxrjwajs/environment/lxqsvczv19eopxk29vfb46mj/application/hb85gdd9mwqqlfwcteflvpbj/logs)

Last updated at: 2026-10-09 16:29:48 CET