ticket: resume accepted worker runtime branches

.yoi/tickets/00001KVZKSV6C/item.md

@@ -2,7 +2,7 @@
 title: 'Backend RuntimeRegistryの基盤をworker-runtime向けに整理する'
 state: 'inprogress'
 created_at: '2026-06-25T14:44:03Z'
-updated_at: '2026-06-25T16:58:32Z'
+updated_at: '2026-06-25T19:24:51Z'
 assignee: null
 queued_by: 'workspace-panel'
 queued_at: '2026-06-25T16:31:28Z'

.yoi/tickets/00001KVZKSV6C/thread.md

@@ -175,3 +175,23 @@ Recovery needed:
 - If retry remains impossible, use an explicit human-authorized alternative implementation route.
 
 ---
+
+<!-- event: implementation_report author: yoi-orchestrator at: 2026-06-25T19:24:51Z -->
+
+## Implementation report
+
+Implementation recovery / kickoff:
+
+- User reported the previous SpawnPod failure was caused by a development environment variable forcing child launch from `target` binary. The variable was removed and installed binary is now used.
+- Retried Coder Worker spawn for the already accepted worktree; spawn succeeded.
+
+Active implementation:
+- Worktree: `/home/hare/Projects/yoi/.worktree/00001KVZKSV6C-backend-runtime-registry`
+- Branch: `work/00001KVZKSV6C-backend-runtime-registry`
+- Coder Worker: `yoi-coder-00001KVZKSV6C-runtime-registry`
+- Scope: read implementation worktree + non-recursive workspace root, write `crates/workspace-server/**` only.
+
+Next action:
+- Wait for Coder implementation report, then route to reviewer.
+
+---