ticket: accept workspace companion llm worker

.yoi/tickets/00001KW55B33H/artifacts/orchestration-plan.jsonl

@@ -1 +1,2 @@
 {"id":"orch-plan-20260627-190816-1","ticket_id":"00001KW55B33H","kind":"blocked_by","related_ticket":"00001KW55B33B","note":"Queue routing checked. Workspace Companion real LLM Worker execution depends on embedded worker-runtime to worker crate connection `00001KW55B33B`, which is queued and blocked by execution backend boundary `00001KW55B32Y`. Leave queued until dependency chain is done.","author":"yoi-orchestrator","at":"2026-06-27T19:08:16Z"}
+{"id":"orch-plan-20260628-060239-2","ticket_id":"00001KW55B33H","kind":"accepted_plan","note":"Queue continuation requested by user. Dependency `00001KW55B33B` is closed and validated, so the Companion real LLM Worker Ticket is now unblocked. There are no other queued Tickets.","accepted_plan":{"summary":"前段 `00001KW55B33B` が closed になったため、Workspace Backend 起動時の `workspace_companion` を実 LLM execution backend 付き Worker として spawn し、Worker list / Worker Console から通常 Worker として attach/send できる状態を完成させる。Companion 専用 fake/providerless response は復活させず、provider/config/secret 不足は typed diagnostic として扱う。","branch":"work/00001KW55B33H-workspace-companion-llm-worker","worktree":"/home/hare/Projects/yoi/.worktree/00001KW55B33H-workspace-companion-llm-worker","role_plan":"Orchestrator が dedicated child worktree を作成し、coder Worker に `crates/workspace-server`, 必要に応じて `crates/worker`, `crates/worker-runtime`, `web/workspace`, root Cargo/package files の focused write scope を委譲する。reviewer Worker は read-only で Companion bootstrap、Worker input API 経路、protocol event / transcript / Web Console 表示、provider/config 不足時の typed diagnostic、fake response absence、Browser-facing non-leak を確認する。merge/validation/done/cleanup は Orchestrator が行う。現時点では `StopPod` は使用せず、cleanup は child worktree/branch のみ行う。"},"author":"yoi-orchestrator","at":"2026-06-28T06:02:39Z"}

.yoi/tickets/00001KW55B33H/item.md

@@ -1,8 +1,8 @@
 ---
 title: 'Workspace Companionを実LLM実行Workerとして起動する'
-state: 'queued'
+state: 'inprogress'
 created_at: '2026-06-27T18:26:47Z'
-updated_at: '2026-06-27T19:08:35Z'
+updated_at: '2026-06-28T06:02:54Z'
 assignee: null
 queued_by: 'workspace-panel'
 queued_at: '2026-06-27T19:06:32Z'

.yoi/tickets/00001KW55B33H/thread.md

@@ -55,3 +55,41 @@ Next action:
 - `00001KW55B33B` が done になった後に再 routing する。
 
 ---
+
+<!-- event: decision author: yoi-orchestrator at: 2026-06-28T06:02:49Z -->
+
+## Decision
+
+Routing decision:
+
+Queue continuation was explicitly requested. The upstream dependency `00001KW55B33B` is now closed after review, merge, validation, and cleanup. This Ticket is therefore unblocked and accepted for implementation.
+
+Plan:
+- Create child implementation worktree:
+  - `/home/hare/Projects/yoi/.worktree/00001KW55B33H-workspace-companion-llm-worker`
+- Branch:
+  - `work/00001KW55B33H-workspace-companion-llm-worker`
+- Route implementation to a sibling Coder Worker with focused write scope.
+- Route read-only review to a sibling Reviewer Worker after implementation.
+- Orchestrator retains merge, final validation, Ticket completion, child worktree/branch cleanup, and final reporting.
+
+Review/implementation focus:
+- Workspace Backend bootstraps `workspace_companion` as an executable Worker with real `worker` crate execution adapter.
+- Worker list / Worker Console use the normal `runtime_id + worker_id` authority and Backend Worker input API.
+- Console Send reaches real Worker execution path and uses `protocol::Event` / transcript projection, not Companion-specific fake/providerless messages.
+- provider/model/secret/profile/authority absence returns typed diagnostic and does not present the Worker as input-capable.
+- `/api/companion/messages`, if retained, must not return fake response and should be a thin normal Worker input path wrapper or non-authoritative compatibility path.
+- Browser-facing API must not leak raw handles, sockets, session paths, credentials, secret refs, raw manifest paths, or broad authority internals.
+
+Operational note:
+- User instructed not to use `StopPod` for now after repeated stop/hang symptoms. Cleanup will skip role-Pod shutdown and remove only child worktree/branch unless this is explicitly reauthorized.
+
+---
+
+<!-- event: state_changed author: yoi-orchestrator at: 2026-06-28T06:02:54Z from: queued to: inprogress reason: dependency_closed_and_queue_continues field: state -->
+
+## State changed
+
+Queue continuation requested by user. Dependency `00001KW55B33B` is closed with merge and validation complete, so this Ticket has no remaining blockers. Accepting implementation before child worktree / role Pod side effects.
+
+---