The open-path interception reroutes EVERY chat-side file open into the
sidebar editor, including the stock "Show in folder" gesture: the
ui-deliverables row passes "." (resolved to "<cwd>/." by the chat view),
so clicking it opened a bogus editor tab for the workspace directory
(host error: '"..." is a directory').
- openpath-intercept: detect the folder-reveal gesture ("." / "./" /
"<cwd>/.") and route it to a new revealInExplorer dep instead of the editor.
- intercept: revealInExplorer switches to the explorer tab (expanding the
panel), expands the produced files' parent directories, and highlights /
scrolls to them; the intercepted produced-files row now also renders its
own "Show in folder" button when files are hidden.
- produced-files: selectProducedFiles reads the engine Turn data
(owner.turn.data.get("deliverables")) — the same source ui-deliverables
uses — with the node replica as fallback. The old code read owner.nodes,
which the real TurnTailOwnerProps ({turn, seq, openFile}) does not carry,
so the takeover never claimed the chain.
- state: transient `revealed` set (never persisted) plus a revealPaths
reducer that expands ancestor directories.
- ExplorerView: highlight + scroll revealed rows; Sidebar/tabs/service
thread `revealed` through TabComponentProps.
- tests: folder-gesture routing, engine-data selector, wiring seat, zh/en copy.