Harness dialog and code status fallback plugin

Key features

• Turn Rewind is the user-facing feature, repository, and Profile Bundle name.
• Git worktree, HEAD, branch, and in-progress-operation fences
• Explicit onlynothing is restored automatically — every restore starts from the user pressing the final button in the Web dialog, or from an explicit call through the service API.
• tracked files, including currently missing tracked paths
• Change Ledger is the durable restore engine underneath it: the ctx.changeLedger service, on-disk format, and storage path keep that name because they describe the reusable snapshot and recovery layer rather than the Web action alone.