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/utils/suggestDateFromPath.ts

@@ -0,0 +1,57 @@
+/**
+ * Best-effort calendar date guessed from a photo's filename / parent
+ * folders. Returns `YYYY-MM-DD` only when year + month + day are all
+ * present and form a real date; returns `null` for year-only or
+ * unparseable inputs.
+ *
+ * Used by the EXIF Stripped review tab to pre-fill the metadata
+ * sidebar's date suggestion row.
+ */
+
+import { isValidISODate } from '$lib/services/photoprism';
+
+interface Input {
+	fileName?: string;
+	path?: string;
+}
+
+function pad2(n: number): string {
+	return n < 10 ? `0${n}` : String(n);
+}
+
+function tryDate(y: number, m: number, d: number): string | null {
+	if (y < 1900 || y > 2100) return null;
+	if (m < 1 || m > 12) return null;
+	if (d < 1 || d > 31) return null;
+	const iso = `${y}-${pad2(m)}-${pad2(d)}`;
+	return isValidISODate(iso) ? iso : null;
+}
+
+// `YYYY[sep]MM[sep]DD` where `sep` is an optional `-` or `_`. Anchored by
+// non-digit boundaries on both sides so `IMG_20070612_135421.jpg` matches
+// `20070612` cleanly without bleeding into the trailing timestamp.
+const BASENAME_YMD = /(?<!\d)(\d{4})[-_]?(\d{2})[-_]?(\d{2})(?!\d)/;
+
+// Path variant accepts `/` as a separator too — `2007/06/12`, `2007-06-12/`.
+const PATH_YMD = /(?<!\d)(\d{4})[-_/](\d{2})[-_/](\d{2})(?!\d)/;
+
+export function suggestDateFromPath(input: Input): string | null {
+	const fileName = (input.fileName ?? '').trim();
+	const path = (input.path ?? '').trim();
+
+	const fnMatch = fileName.match(BASENAME_YMD);
+	if (fnMatch) {
+		const iso = tryDate(Number(fnMatch[1]), Number(fnMatch[2]), Number(fnMatch[3]));
+		if (iso) return iso;
+	}
+
+	if (path) {
+		const pMatch = path.match(PATH_YMD);
+		if (pMatch) {
+			const iso = tryDate(Number(pMatch[1]), Number(pMatch[2]), Number(pMatch[3]));
+			if (iso) return iso;
+		}
+	}
+
+	return null;
+}