FileManagerView rewritten as a native DS browser on the per-instance
file bridge: instance selector, breadcrumb nav, dir-first listing
(name/size/modified), folder drill-down, inline file editor (read/save),
toolbar (new folder/file/refresh), per-row rename + delete-confirm.
New files store wraps the /instances/:id/files* endpoints. VueFinder
import + RemoteDriver fully removed — no more retired-protocol /api/files.
Honest empty (no instance -> Server page) + error (retry) states, never
the global error boundary.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
