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+---
+title: 'Orchestratorに独立queued workの並列開始を促す'
+state: 'planning'
+created_at: '2026-06-09T10:17:32Z'
+updated_at: '2026-06-09T10:17:32Z'
+assignee: null
+---
+
+## 背景
+
+現行の Orchestrator workflow は安全側の制約が強く、並列稼働は許可されているが積極的に促されていない。
+
+現状の強い指示:
+
+- Queue notification だけで blind spawn しない。
+- `queued -> inprogress` acceptance 前に worktree / coder Pod / reviewer Pod を起動しない。
+- dependency / conflict / capacity / risk / current workspace state を確認する。
+- OrchestrationPlan は automatic scheduler ではなく、Orchestrator が読んで明示判断する。
+
+一方で、以下の指示が弱い:
+
+- independent queued Tickets が複数あり capacity が空いているなら、1件ずつ完了待ちするのではなく並列に受理・起動する。
+- idle capacity を残さないよう active work set を更新する。
+- Orchestrator は safety checks を満たした範囲で parallel work を優先する。
+
+結果として、Orchestrator が保守的に 1 Ticket ずつ処理し、coder/reviewer capacity を使い切らない傾向がある。
+
+## ゴール
+
+Orchestrator / multi-agent workflow guidance を更新し、独立した queued work があり capacity が空いている場合は、明示的な safety checks を満たした上で並列稼働を優先するようにする。
+
+## 要件
+
+- `ticket-orchestrator-routing` に parallel capacity policy を追加する。
+- `multi-agent-workflow` の並列運用 guidance を、注意事項だけでなく積極的な scheduling/acceptance stance として補強する。
+- Orchestrator は automatic scheduler ではないが、明示的に起動された routing / queue review / panel kick の中では idle capacity を残さないように判断する。
+- 複数 queued Tickets がある場合、Orchestrator は以下を確認した上で並列開始を優先する:
+  - each Ticket is queued and human-authorized for routing;
+  - each Ticket has no unresolved `depends_on` / incoming blocking relation;
+  - no `do_not_parallelize` / conflict / shared write-scope constraint blocks concurrent work;
+  - separate worktree / branch / write scope can be created;
+  - coder/reviewer capacity is available and trackable;
+  - each Ticket can be accepted with `queued -> inprogress` before side effects;
+  - existing active inprogress work is not waiting for a bottleneck that makes new work unsafe.
+- If parallel start is not chosen despite available queued work, Orchestrator should record a bounded reason:
+  - dependency;
+  - conflict;
+  - capacity;
+  - missing planning decision;
+  - workspace dirty state;
+  - reviewer/coder bottleneck;
+  - user/human gate.
+- OrchestrationPlan records may help express waiting/capacity/conflict decisions, but they are not automatic scheduler authority.
+- The guidance should distinguish:
+  - active work that is waiting on coder/reviewer completion, where re-kick should not thrash;
+  - idle Orchestrator with queued/planned work, where starting another independent Ticket is preferred.
+- Keep all existing safety invariants:
+  - no implementation side effects before `queued -> inprogress`;
+  - no blind spawn from notification alone;
+  - no shared write scope between coder Pods;
+  - reviewer remains read-only unless explicitly scoped;
+  - dependency/conflict relations are respected.
+
+## 非目標
+
+- Implementing an automatic background scheduler.
+- Starting unqueued Tickets.
+- Ignoring relation blockers or workspace conflicts.
+- Implementing OrchestrationPlan store changes.
+- Changing Pod runtime scheduling.
+
+## 受け入れ条件
+
+- Orchestrator workflow says independent queued work with available capacity should be started in parallel after explicit checks, rather than waiting one Ticket at a time by default.
+- Multi-agent workflow includes active parallel work-set management guidance, not only safety notes.
+- If Orchestrator leaves queued work idle while capacity appears available, it records a reason.
+- Safety invariants around `queued -> inprogress`, worktree isolation, scope separation, relation blockers, and review loop remain explicit.
+- Focused prompt/workflow tests or snapshot tests are updated if present.
+- `target/debug/yoi ticket doctor` and `git diff --check` pass.
diff --git a/.yoi/tickets/20260609-101732-001/thread.md b/.yoi/tickets/20260609-101732-001/thread.md
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+<!-- event: create author: LocalTicketBackend at: 2026-06-09T10:17:32Z -->
+
+## 作成
+
+LocalTicketBackend によって作成されました。
+
+---