feat(a11y): consolidate ARIA announcements on interactive cards (#133)

- Added comprehensive `aria-label` to the parent `<Link>` in `SubpageGridView`.
- Hid redundant textual child elements using `aria-hidden="true"`.
- Removed redundant `alt` text from decorative thumbnail `Image`.
- Removed unused `albumMap` prop in `AlbumGrid`.

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>

.Jules/palette.md

@@ -5,3 +5,7 @@
 ## 2024-05-25 - SVG Icon Accessibility
 **Learning:** Adding `aria-hidden="true"` to decorative `<svg>` icons within interactive elements (like `<button>` or `<a>`) that already have an `aria-label` is crucial. Otherwise, screen readers may read the raw vector nodes or fall back to confusing announcements in addition to the label. Similarly, when adding text to visual spinners, use `role="alert"` and `aria-live="polite"` on the container while hiding the SVG graphic.
 **Action:** When adding or modifying interactive elements with icon graphics, always ensure the graphic is explicitly hidden from screen readers using `aria-hidden="true"` if a text alternative (`aria-label`) is provided.
+
+## 2024-05-26 - Interactive Card ARIA Labels
+**Learning:** When building interactive card components that contain multiple pieces of text or badges (like titles and photo counts), screen readers may announce them in a fragmented or confusing way.
+**Action:** Always apply a comprehensive `aria-label` to the parent link/container that encompasses all meaningful visual data (e.g., titles and item counts). Use `aria-hidden="true"` on redundant text or visual child elements, and set `alt=""` on decorative images to consolidate screen reader announcements into a single, accurate interaction point.