fix(ui): keep trash counter in sync with trash changes

Reload the rail trash count after every operation that changes the
trash contents, not just navigation and empty-trash: moving photos to
trash (grid, panel, viewer), restoring, permanent delete and deleting
an album. Previously the counter stayed stale until the next route
change.

frontend/src/lib/components/AlbumActionsDialogs.svelte

@@ -6,6 +6,7 @@
 	import { portal } from '$lib/actions/portal';
 	import { albums } from '$lib/stores/albums.svelte';
 	import { albumActions } from '$lib/stores/album-actions.svelte';
+	import { trash } from '$lib/stores/trash.svelte';
 
 	let title = $state('');
 	let busy = $state(false);
@@ -48,6 +49,7 @@
 		try {
 			await albums.destroy(a.id);
 			albumActions.deleting = null;
+			await trash.load();
 			if ($page.params.id === a.id) await goto('/');
 		} catch (e) {
 			error = (e as Error).message;

frontend/src/lib/components/PhotoPanel.svelte

@@ -8,6 +8,7 @@
 	import { auth } from '$lib/stores/auth.svelte';
 	import { albums } from '$lib/stores/albums.svelte';
 	import { transfer } from '$lib/stores/transfer.svelte';
+	import { trash } from '$lib/stores/trash.svelte';
 	import { viewerActions } from '$lib/stores/viewer-actions.svelte';
 	import { buildExifRows, EXIF_BASE, EXIF_CATALOG, EXIF_LABELS } from '$lib/exif';
 	import type { Photo, Preferences, Tag } from '$lib/types';
@@ -193,6 +194,7 @@
 		try {
 			await photosApi.deleteBatch([photo.id]);
 			pendingDelete = false;
+			await trash.load();
 			onDeleted?.();
 		} catch {
 			/* ignore */