ticket: record coder startup blocker

.yoi/tickets/00001KVTNAY20/artifacts/orchestration-plan.jsonl

@@ -1 +1,2 @@
 {"id":"orch-plan-20260623-192711-1","ticket_id":"00001KVTNAY20","kind":"accepted_plan","accepted_plan":{"summary":"Ticket 00001KVTNAY20 は implementation_ready。専用 worktree `/home/hare/Projects/yoi/.worktree/00001KVTNAY20-worker-runtime-spawn` と branch `work/00001KVTNAY20-worker-runtime-spawn` で、Workspace Worker runtime spawn abstraction を実装し、routing record の IntentPacket を基準に coder/reviewer sibling loop へ進める。root/original workspace では git/read/write/validate/merge/cleanup を行わない。","branch":"work/00001KVTNAY20-worker-runtime-spawn","worktree":"/home/hare/Projects/yoi/.worktree/00001KVTNAY20-worker-runtime-spawn","role_plan":"Orchestrator: acceptance/routing, worktree creation, final integration/validation/cleanup. Coder: implementation in dedicated child worktree with narrow write scope. Reviewer: read-only review by default against recorded IntentPacket, validation evidence, and diff. Orchestrator handles merge into orchestration branch after reviewer approval."},"author":"yoi-orchestrator","at":"2026-06-23T19:27:11Z"}
+{"id":"orch-plan-20260623-193340-2","ticket_id":"00001KVTNAY20","kind":"waiting_capacity_note","note":"Coder sibling execution is temporarily blocked by runtime/provider startup failures, not by Ticket requirements. `builtin:coder` started but both initial run and retry failed with provider API error `Unsupported content type`; alternate `inherit` / `builtin:default` / `builtin:companion` recovery attempts did not produce a socket within 10s. Worktree `/home/hare/Projects/yoi/.worktree/00001KVTNAY20-worker-runtime-spawn` remains clean at orchestration commit `b8388655`; no implementation diff exists yet. Human/tooling follow-up is needed before continuing multi-agent implementation, unless Orchestrator is explicitly authorized to implement directly.","author":"yoi-orchestrator","at":"2026-06-23T19:33:40Z"}

.yoi/tickets/00001KVTNAY20/item.md

@@ -2,7 +2,7 @@
 title: 'Abstract Workspace Worker runtime spawn operations'
 state: 'inprogress'
 created_at: '2026-06-23T16:34:39Z'
-updated_at: '2026-06-23T19:31:58Z'
+updated_at: '2026-06-23T19:33:48Z'
 assignee: null
 queued_by: 'workspace-panel'
 queued_at: '2026-06-23T19:25:09Z'

.yoi/tickets/00001KVTNAY20/thread.md

@@ -148,3 +148,22 @@ Implementation orchestration recovery:
 - 実装 side effect の回復として、同じ child worktree/branch を使い、別 profile で Coder role を再起動する。
 
 ---
+
+<!-- event: implementation_report author: yoi-orchestrator at: 2026-06-23T19:33:48Z -->
+
+## Implementation report
+
+Implementation orchestration blocked:
+
+- Coder sibling execution is blocked by runtime/provider failures, not by Ticket requirements or repository state.
+- `builtin:coder` Pod `yoi-coder-00001KVTNAY20-worker-runtime` started, but both initial run and retry failed before assistant output with provider API error: `Unsupported content type`.
+- That Pod was stopped and scope reclaimed. child worktree status remained clean with no implementation diff.
+- Recovery attempts using `inherit` (`yoi-coder-00001KVTNAY20-worker-runtime-2`), `builtin:default` (`...-3`), and `builtin:companion` (`...-4`) did not produce sockets within 10s.
+- Worktree `/home/hare/Projects/yoi/.worktree/00001KVTNAY20-worker-runtime-spawn` and branch `work/00001KVTNAY20-worker-runtime-spawn` are prepared and clean at orchestration commit `b8388655`.
+- `orch-plan-20260623-193340-2` に waiting-capacity note を残した。
+
+Next action:
+- Coder Pod/profile/provider startup issue の解消後に同じ worktree/branch で multi-agent workflow を再開する。
+- あるいは人間が明示的に Orchestrator direct implementation を許可する場合のみ、Orchestrator がこの child worktree で実装へ進む。
+
+---