Around the Horn: dead-end fallback, elevate cards, dedup relativeDate

[tinkerwise]

Problem

• Navigating directly to /around-the-horn/ (bookmarked link, new tab, shared URL) shows an opaque error with no recovery path — sessionStorage is empty on a fresh load
• ATH bundle cards are buried below the feed toolbar; they're the best-designed element on the page but most users scroll past the filters before reaching them
• around-the-horn/index.astro contains a full inline duplicate of relativeDate() from utils.js

Changes

• Show a friendly "Story bundle unavailable" message with a prominent orange "← Back to YardReport" link when sessionStorage has no bundle
• Move the ATH bundle container above the feed toolbar in index.astro so cards appear before filters on every load
• Remove the duplicate inline relativeDate and import from utils.js

Effort: Small