runtime: restore persisted worker execution

.yoi/tickets/00001KXB7V4WY/item.md

@@ -1,8 +1,8 @@
 ---
 title: 'Runtime restart-crossing Worker restore path'
-state: 'inprogress'
+state: 'done'
 created_at: '2026-07-12T13:21:38Z'
-updated_at: '2026-07-12T14:16:14Z'
+updated_at: '2026-07-12T14:38:56Z'
 assignee: null
 queued_by: 'yoi ticket'
 queued_at: '2026-07-12T14:16:14Z'

.yoi/tickets/00001KXB7V4WY/thread.md

@@ -39,4 +39,39 @@ Ticket を `yoi ticket` が queued にしました。
 State changed to `inprogress`.
 
 
+---
+
+<!-- event: implementation_report author: hare at: 2026-07-12T14:38:35Z -->
+
+## Implementation report
+
+Implemented Runtime restart-crossing Worker restore path.
+
+- Added explicit `Restore` execution operation and `WorkerExecutionRestoreRequest` / backend restore API.
+- Added Runtime restore pass for fs-backed Runtime startup after execution backend install.
+- Persisted connected mappings remain stale on load until a real backend handle is restored.
+- Restore success commits a live execution handle, connected status, Workdir status, and `WorkerExecutionRestored` event.
+- Restore failure keeps the Worker stale and records `worker_execution_restore_failed` diagnostics without failing Runtime startup.
+- Worker runtime backend can restore controllers through `RuntimeWorkerFactory::restore_controller`, using `Worker::restore_from_worker_metadata_with_context` and a conservative pending/no-history fallback.
+- Spawn and restore share event bridge/handle registration behavior.
+
+Validation:
+- `cargo fmt`
+- `cargo check -q -p worker-runtime`
+- `cargo check -q -p worker-runtime --features fs-store`
+- `cargo check -q -p worker-runtime --features fs-store,ws-server`
+- `cargo test -q -p worker-runtime --features fs-store,ws-server`
+- `cargo check -q`
+- `nix build .#yoi --no-link`
+
+
+---
+
+<!-- event: state_changed author: "yoi ticket" at: 2026-07-12T14:38:56Z from: inprogress to: done reason: cli_state field: state -->
+
+## State changed
+
+State changed to `done`.
+
+
 ---