feat(web): W5-B file manager page /console/files

Roots + lazy dir tree, virtualized grid with status badges and asset/slot/
download links, breadcrumb, sort, glob search, hidden toggle, filter chips,
paging and truncation notice; multi-select (Shift/Ctrl/all), action bar,
context menu, drag-to-move with dryRun preview, keyboard navigation,
offline (503) and empty/error states, mobile layout with tree drawer.
Rename/move/copy/delete dialogs with dryRun previews and reference checks,
4-step organize wizard, trash view (restore/restore-to/purge, expiry).
DEV-only ?mock=1 in-memory backend; smoke route list includes /console/files.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

apps/web/scripts/smoke.mjs

@@ -27,6 +27,8 @@ const STATIC_ROUTES = [
   "/console/library",
   "/console/identity",
   "/console/organize",
+  "/console/files",
+  "/console/files/trash",
   "/console/subscriptions",
   "/console/preferences",
   "/console/sites",