Combine Newsroom and Awards into a single filterable page

[dwahbe]

Addresses #18717, feel free to ignore if not the right direction.

Proposed changes

This PR consolidates the existing Newsroom (/about/newsroom/) and Awards (/awards/) pages into a single Newsroom at /about/newsroom/, with filter tabs for News, Press, and Awards. The Awards URL aliases to the new page so external links and search rankings carry over.

A unified Newsroom page

• Filter tabs at the top: All, News, Press, Awards. State lives in the URL hash so individual filters are linkable and the back/forward buttons work.
• Featured cards for the most recent items, followed by an Archive list for older items.
• The Archive paginates with a "Load more" button (page size 20). Pagination state is per-filter, so switching tabs starts fresh.
• "All" interleaves press releases, news coverage, and awards in chronological order; each tab also has its own featured + archive split computed from its filtered feed.

Card design

• A uniform card grid with image, type chip, date, title, and (for press releases) a short summary.
• On the All tab, each card shows a colored chip indicating its type. On a single-type tab, the chips are hidden since the type is implied by the active filter.
• The bold-on-active tab uses a hidden ghost label to reserve width, and the date and chip share matching vertical padding, so toggling tabs doesn't cause horizontal or vertical layout shifts.

Content and routing

• content/about/newsroom.md becomes the unified page; content/awards/_index.md is removed and /awards/ aliases to the new URL.
• data/awards.toml gets a date field on each entry (sourced from the original publication or announcement date) so awards sort chronologically alongside press and news.
• Top nav and footer collapse the previous two entries into a single "Newsroom — News, press, and awards" entry.
• The About page (/about/) keeps a compact "In the Newsroom" preview using the same card partial, with one item from each category.

Implementation notes

• New layout in layouts/page/newsroom.html with four small partials in layouts/partials/newsroom/:
  • card.html — the featured-card layout
  • archive-row.html — the compact archive row
  • type-meta.html — single source of truth for type → label / badge color / track-name mapping
  • sort-key.html — parses the human-readable dates from the data files into a sortable `YYYY-MM-DD` key
• Filter behavior in theme/src/ts/newsroom.ts. Uses the existing `analytics.track()` pattern (see `llm-menu.tsx`, `hubspot-form.tsx`) to fire `newsroom-filter` and `newsroom-load-more` events. Existing per-link `data-track` attributes carry over.
• Tab styling follows the established `:target`-driven pattern from `_event-list.scss`, with the gradient-border mixin from `_mixins.scss`.

[cnunciato]

Hello again @dwahbe! 👋🏻

Thanks for this submission as well! I generally like this idea, but there's a bunch here to consider, so I'll need to discuss it with the team. We may also want to provide you with some additional guidance to align more closely with the visual updates we've been making across the site lately. Will keep you posted!

[dwahbe]

Sounds great! Let me know :)