revert: remove activity integration from homepage (#1021)
restore homepage to pre-activity state (cd2e7b7) and restore the
standalone activity page to its polished version (3515b21). the
activity page remains functional at /activity but is unlisted —
no navigation links point to it.
removes activity-feed module, ActivityRow, and Sparkline components
added in #1020.
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
authored by
zzstoatzz.io