The 'See all similar' takeover fetched /api/gallery/similar fine (200, ~100
results) but the grid showed nothing: GalleryGrid renders ONLY by iterating
store.dateGroups, and similar-mode returns date_groups=[] (results are ranked
by cosine distance, not chronological). Zero groups → zero tiles despite
store.images being full. Add a flat fallback: when there are no date groups
but images exist, render them as one ungrouped list in ranked order (no date
headers). The modal Related strip was unaffected (it renders its images
directly). Test locks both the flat and grouped paths.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
