Visual + docs patch on top of v1.9.0.
Friends drawer surface tier lightened (Revamp mode)
The original Friends drawer surface tokens (--rv-bg-fr / --rv-surface-fr / --rv-surface-2-fr) were L*=11/15/18 — too close to pure black. Friend rows blended into the drawer canvas and the FAB looked dead. Bumped each tier by ~5 percentage points of L* (now 16/22/26) so each level reads distinctly against the next, especially against avatars with photo backgrounds. Edge tokens widened (42% / 54%) for matching contrast.
Classic mode unchanged.
README
Bumped the version shield to v1.9.0, rewrote the Status paragraph to lead with the v1.9 release, added a 🚀 What's new in v1.9.0 section above core features covering: Revamp UI (admin + standalone + friends drawer + toggle), Friends upgrades (last-watched + HideLastWatched), HMAC webhook signing, Security A+ (rate limit, audit log filter, CSP, 34 xUnit tests, GitHub Actions CI, expanded SECURITY.md), and the plugin-wide efficiency overhaul.