note: 同じ Workspace Panel Ticket row/model/action/diagnostic surface を変更する可能性が高いため、`00001KV09WYC6` の実装・review・integration 後に再 routing する。

author: yoi-orchestrator


note: 現在 `00001KTFY8V80` と `00001KV09WYC6` の2件が inprogress で Coder Pod running。`00001KV09WYC6` と source surface が重なるため、追加 spawn せず queued のまま待機。


summary: Accept invalid-Ticket partial failure Panel bugfix now that prior Panel Intake row work is integrated. Implement partial failure handling and focused tests without changing Ticket lifecycle authority.

role_plan: Orchestrator creates a dedicated implementation worktree and spawns a Coder with write scope limited to that worktree. Reviewer will run read-only after implementation report. Prior conflict with `00001KV09WYC6` is resolved because that Ticket is merged/validated/done in orchestration branch.