web(review): switch cause tabs to PhotoGrid, add date-from-path suggestion

- CauseGroupCard now wraps PhotoGrid so selection, keyboard nav, and
  preview flow through the standard timeline plumbing. Per-tile hover
  Approve/Archive and the group-wide Approve all are gone — the bottom
  BulkActionBar's review-section Keep/Archive handle single + bulk.
- Low Resolution tab opts into a new PhotoTile dimensionBadge prop so
  WxH stays visible on each tile.
- New suggestDateFromPath util parses YYYY-MM-DD from filename or
  folder path. RightSidebar surfaces it as an amber Apply row above
  the Taken-at input whenever the photo lacks a trusted TakenAt.
- BulkActionBar gains a "Accept date & Keep" button (review section
  only) that patches each selected photo's TakenAt from its path
  suggestion when available, then approves.
- Drop the Same folder / Same camera / Same year strips and the
  RelatedStrip component from the metadata sidebar.

Also bundles in-progress Notes route + tile components and small
tweaks to LeftSidebar, DuplicatesView, CrossFolderGroupCard, and
photoprism.ts.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

web/src/lib/components/timeline/PhotoGrid.svelte

@@ -31,8 +31,12 @@
 		 *  `view.thumbnailSize` so drill-in grids honour the same XS–XL
 		 *  preset the timeline uses. */
 		columns?: string;
+		/** Forwarded to every PhotoTile. The Low Resolution review tab
+		 *  opts in so users can spot pixel dimensions without opening
+		 *  each tile. */
+		dimensionBadge?: boolean;
 	}
-	let { photos, columns }: Props = $props();
+	let { photos, columns, dimensionBadge = false }: Props = $props();
 	const tracks = $derived(
 		columns ?? `repeat(auto-fill, minmax(${view.thumbnailSize}px, 1fr))`
 	);
@@ -91,6 +95,7 @@
 			<PhotoTile
 				{photo}
 				selected={sel}
+				{dimensionBadge}
 				onClick={(e) => onClick(e, photo.UID)}
 				onDblclick={(e) => onDblclick(e, photo.UID)}
 			/>