Review view: reuse timeline action surface, simpler card UX

The /review cards now share the timeline's PhotoGrid, gridKeyNav,
BulkActionBar, and global selection store instead of carrying parallel
implementations. The card is reduced to a header (title + count +
Dismiss / Archive all), an advisory caption, and a PhotoGrid; keyboard
nav, hover affordances, multi-select, and bulk verbs come from the
shared machinery.

- New web/src/lib/services/photoActions.ts holds the canonical
  dismissPhotos / archivePhotos helpers (toast wording, focus advance,
  undo push, ['photos'] + ['review-groups'] cache invalidation).
  BulkActionBar.onApprove / onArchive and gridKeyNav.approveCullTargets
  / toggleArchive('archive') route through it. CauseGroupCard's
  Dismiss / Archive-all buttons call the same helpers - one code path
  from any surface.

- Approve verb renamed to "Dismiss" across BulkActionBar, gridKeyNav
  toasts ("Kept N" -> "Dismissed N"), and the new review card. The
  BulkActionBar Clear/Dismiss clear button is just "Clear" now so the
  verb only means the action.

- /review sets filters.section='review' on mount and restores on
  unmount, which is what swings the shared action surface into review
  semantics; an effect clears the selection on tab change so a
  previously-selected photo from another cause can't be hit by a new
  tab's bulk verb.

- The route mounts BulkActionBar at the bottom and swaps the right
  aside to BulkMetadataSidebar when selection.ids.size >= 2 - same as
  the timeline; gives the user a one-shot "apply this Date / Caption /
  Keyword to all selected" affordance for EXIF-stripped batches.

- CauseGroupCard drops its bespoke keyboard handler, ResizeObserver,
  focusedIdx state, per-tile hover Approve/Archive buttons, confirm()
  dialogs, and toast.loading worker loop. The unused CauseBadges
  component is removed.

web/src/lib/services/photoActions.ts

@@ -0,0 +1,68 @@
+/**
+ * Shared action helpers for the photo-app's review / archive flows.
+ *
+ * Three callers reach for these:
+ *   1. `gridKeyNav` — the document-level keyboard action (S / X)
+ *   2. `BulkActionBar` — the footer button row that appears on selection
+ *   3. `/review` CauseGroupCard — per-cause "Dismiss all" / "Archive all"
+ *
+ * Centralising the toast text, undo wiring, focus advance, and cache
+ * invalidation here keeps the three surfaces in lockstep — change the
+ * toast wording in one place and everywhere shows the same verb.
+ */
+
+import { toast } from 'svelte-sonner';
+import { batchEdit } from './batch';
+import { invalidatePhotos } from './bulk';
+import { approvePhoto, batchArchive, batchRestore } from './photoprism';
+import { queryClient } from '$lib/queryClient';
+import { clearSelection, focusAfter } from '$lib/stores/selection.svelte';
+import { push as pushUndo } from '$lib/stores/undo.svelte';
+
+/**
+ * Dismiss photos out of the review queue by bumping their quality
+ * score above PhotoPrism's threshold. One-way: there's no
+ * `/unapprove` endpoint, so we do NOT push an undo entry — a re-keyed
+ * action would just be a no-op on already-approved photos.
+ */
+export async function dismissPhotos(uids: string[]): Promise<void> {
+	if (uids.length === 0) return;
+	const { updated, errors } = await batchEdit(uids, (id) => approvePhoto(id));
+	// Advance focus past the dismissed set before the timeline refetches
+	// so the cursor doesn't snap back to photo[0]; clear the now-stale
+	// selection ring for the same reason.
+	focusAfter(uids);
+	clearSelection();
+	invalidatePhotos(uids);
+	void queryClient.invalidateQueries({ queryKey: ['review-groups'] });
+	if (errors.length) {
+		toast.error(`Dismissed ${updated.length}; ${errors.length} failed`, {
+			description: errors[0].message
+		});
+		return;
+	}
+	toast.success(`Dismissed ${uids.length}`);
+}
+
+/**
+ * Archive photos. Reversible via the undo stack (Restore on ⌘Z).
+ */
+export async function archivePhotos(uids: string[]): Promise<void> {
+	if (uids.length === 0) return;
+	try {
+		await batchArchive(uids);
+	} catch (err) {
+		toast.error(err instanceof Error ? err.message : 'Archive failed');
+		return;
+	}
+	pushUndo(`Archived ${uids.length}`, async () => {
+		await batchRestore(uids);
+		invalidatePhotos(uids);
+		void queryClient.invalidateQueries({ queryKey: ['review-groups'] });
+	});
+	focusAfter(uids);
+	clearSelection();
+	invalidatePhotos(uids);
+	void queryClient.invalidateQueries({ queryKey: ['review-groups'] });
+	toast.success(`Archived ${uids.length}`);
+}