diff --git a/.yoi/tickets/00001KTTHP8HE/item.md b/.yoi/tickets/00001KTTHP8HE/item.md
index f18b369e..12187d3d 100644
--- a/.yoi/tickets/00001KTTHP8HE/item.md
+++ b/.yoi/tickets/00001KTTHP8HE/item.md
@@ -2,7 +2,7 @@
 title: 'Panel Orchestrator起動時に専用orchestration worktreeを自動作成・再利用する'
 state: 'inprogress'
 created_at: '2026-06-11T05:15:14Z'
-updated_at: '2026-06-11T08:10:46Z'
+updated_at: '2026-06-11T08:12:54Z'
 assignee: null
 queued_by: 'workspace-panel'
 queued_at: '2026-06-11T07:41:37Z'
diff --git a/.yoi/tickets/00001KTTHP8HE/thread.md b/.yoi/tickets/00001KTTHP8HE/thread.md
index df2a5e72..d7373260 100644
--- a/.yoi/tickets/00001KTTHP8HE/thread.md
+++ b/.yoi/tickets/00001KTTHP8HE/thread.md
@@ -230,3 +230,29 @@ Validation after fix:
 Reviewer `reviewer-panel-orchestration-worktree` has been asked to re-review the amended branch.
 
 ---
+
+<!-- event: review author: reviewer-panel-orchestration-worktree at: 2026-06-11T08:12:54Z status: approve -->
+
+## Review: approve
+
+Branch-local review verdict: approve
+
+Blockers: none.
+
+Reviewer confirmed unsafe reuse blockers are resolved:
+- Expected-path reuse now checks worktree top-level, expected branch, same Git common dir, and clean status.
+- Inherited parent worktree, wrong branch, and unrelated repository cases are covered and rejected without cleanup.
+- Orchestrator spawn root and `TicketRoleLaunchContext` original/target/orchestration root separation satisfy the Ticket requirements.
+- Panel report/diagnostics expose path/branch/status/failure reason.
+
+Validation run by reviewer:
+- `cargo fmt --check` passed.
+- `cargo test -p tui orchestration --lib` passed.
+- `cargo test -p tui existing_ --lib` passed.
+- `cargo test -p tui inherited_parent_worktree_directory_is_rejected_without_cleanup --lib` passed.
+- `cargo test -p client ticket_role --lib` passed.
+- `git diff --check $(git merge-base HEAD develop)..HEAD` passed.
+- `/home/hare/Projects/yoi/target/debug/yoi ticket doctor` passed.
+- `nix build .#yoi --no-link` passed.
+
+---