diff --git a/.yoi/tickets/00001KX6Y6ZEA/artifacts/orchestration-plan.jsonl b/.yoi/tickets/00001KX6Y6ZEA/artifacts/orchestration-plan.jsonl
new file mode 100644
index 00000000..00ce5b8c
--- /dev/null
+++ b/.yoi/tickets/00001KX6Y6ZEA/artifacts/orchestration-plan.jsonl
@@ -0,0 +1,2 @@
+{"id":"orch-plan-20260710-220343-1","ticket_id":"00001KX6Y6ZEA","kind":"after","related_ticket":"00001KX6Y2A9Q","note":"Ticket has explicit typed `depends_on` relation to `00001KX6Y2A9Q`. The prerequisite WorkerFilesystemAuthority refactor is currently `inprogress` and establishes the filesystem-authority/workspace-boundary this Ticket builds on. Start only after the prerequisite is approved, merged, and closed or an explicit combined-work decision is made.","author":"orchestrator","at":"2026-07-10T22:03:43Z"}
+{"id":"orch-plan-20260710-220349-2","ticket_id":"00001KX6Y6ZEA","kind":"waiting_capacity_note","note":"Dashboard queue routing inspected. This Ticket is concrete but blocked by typed `depends_on` relation to `00001KX6Y2A9Q`, which is currently inprogress. Starting now would conflict with the Worker struct/context/constructor refactor and filesystem-authority boundary. Leave queued and re-route after prerequisite merge/close.","author":"orchestrator","at":"2026-07-10T22:03:49Z"}
diff --git a/.yoi/tickets/00001KX6Y6ZEA/item.md b/.yoi/tickets/00001KX6Y6ZEA/item.md
index 05cb59fc..13b2b3ae 100644
--- a/.yoi/tickets/00001KX6Y6ZEA/item.md
+++ b/.yoi/tickets/00001KX6Y6ZEA/item.md
@@ -3,7 +3,7 @@ title: 'Replace Worker workspace_root path with WorkspaceBackend'
 state: 'queued'
 priority: 'P1'
 created_at: '2026-07-10T21:16:22Z'
-updated_at: '2026-07-10T22:03:27Z'
+updated_at: '2026-07-10T22:03:57Z'
 assignee: null
 queued_by: 'workspace-panel'
 queued_at: '2026-07-10T22:03:27Z'
diff --git a/.yoi/tickets/00001KX6Y6ZEA/thread.md b/.yoi/tickets/00001KX6Y6ZEA/thread.md
index 7b63f27b..35576404 100644
--- a/.yoi/tickets/00001KX6Y6ZEA/thread.md
+++ b/.yoi/tickets/00001KX6Y6ZEA/thread.md
@@ -72,4 +72,29 @@ Marked ready by `yoi ticket state`.
 Ticket を `workspace-panel` が queued にしました。
 
 
+---
+
+<!-- event: decision author: orchestrator at: 2026-07-10T22:03:57Z -->
+
+## Decision
+
+Routing decision: blocked_by_dependency
+
+Reason:
+- Dashboard queue authorization was inspected, but this Ticket has an explicit typed `depends_on` relation to `00001KX6Y2A9Q`。
+- `00001KX6Y2A9Q` is currently `inprogress` and is refactoring Worker filesystem authority / cwd removal / no-workdir boundaries。
+- This Ticket replaces Worker `workspace_root` path usage with `WorkspaceBackend`, which builds on the same Worker struct/context/constructor boundary。
+- Starting now would likely conflict with the active filesystem-authority refactor and obscure review boundaries。
+- Therefore this routing pass leaves the Ticket `queued` and does not record `queued -> inprogress`, create a worktree, or spawn role Pods。
+
+Evidence checked:
+- Ticket body / recent thread / artifacts。
+- `TicketRelationQuery(00001KX6Y6ZEA)`: includes dependency on `00001KX6Y2A9Q`。
+- `TicketList(inprogress)`: `00001KX6Y2A9Q` is the active inprogress Ticket。
+- Orchestrator worktree status: clean。
+
+Next action:
+- Re-route this Ticket after `00001KX6Y2A9Q` is approved, merged, validated, and closed。
+- Escalate only if a human explicitly requests combined implementation in the same branch/worktree。
+
 ---