tanabata

T

H1K0 18f1dbc052 fix(frontend): restore grid position via URL anchor on return from viewer

Returning from the file viewer left the grid scrolled to the top: the
position lived only in volatile module state and was never carried
anywhere, and the scroll restore ran before SvelteKit's own scroll reset
(on goto) clobbered it back to the top — worsened by the body, not
<main>, being the effective scroller, so scrollTop restoration was inert.

- The viewer's back/Escape now return to /files?anchor=<currentId> with
  noScroll, carrying the position in the URL (survives reload, no longer
  depends on hidden in-memory state).
- The list restores grid DATA from the snapshot as before, but scrolls in
  afterNavigate — which runs AFTER SvelteKit's scroll handling — using
  scrollIntoView so it works whether <main> or the window scrolls. The
  ?anchor is consumed (stripped via shallow replaceState) once applied.
- Deep link / hard reload with an anchor but no cached grid falls back to
  loading a page anchored at that file, then scrolling to it.
- Snapshot is mirrored to sessionStorage so a refresh still restores.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-06-10 16:30:26 +03:00