cmux SSH workspace Files panel: "Destination not found ... has no projectable resources" after the remote daemon restarts

In cmux (macOS terminal app) with a cmux-tui-backed SSH workspace, the Files panel can show: SSH files unavailable: Destination not found: workspace ws_<id> on ssh:<machine> has no projectable resources. The message comes from SurfaceCatalog+WorkspaceMembership.swift: the workspace still exists in the remote cmux-tui workspace registry (~/.local/state/cmux-tui/sessions/<session>-<hash>/workspace-registry.sqlite3) but has no terminals or other surfaces to project. This happens when the remote daemon shut down cleanly (check ~/.local/state/cmux/remote/sessions/<b64 session>/shutdown.json and runtime.json timestamps) and the app later restored the workspace. Workaround: close the workspace and open a fresh one with cmux ssh <host>, or open a new terminal in it. The underlying issue is that the Files panel's availability is tied to the workspace having a projectable surface, even though listing files only needs the SSH connection. Tagged DEV builds use their own session name (cmux-<tag>), so check the right session directory.