tanin-eww: niri focus-ring tracks the TANINUX accent

The focus-ring active-color was a static Fuji violet (#a39ec4); it now
follows gui.json's accent_hex, lightened 8% to match eww's $accent. The
scripts/accent.sh apply step patches the marked active-color line in
~/.config/niri/config.kdl (niri live-reloads on save); the line carries a
managed-by marker, anchored at line start so it never matches inactive-color.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

packaging/tanin-eww/PKGBUILD

@@ -8,7 +8,7 @@
 # EWW_SRC=...). For publish, point `source` at the eww config git repo instead.
 pkgname=tanin-eww
 pkgver=0.1.0
-pkgrel=4
+pkgrel=6
 pkgdesc="TANINUX desktop shell — eww bar/dock/panels/spotlight + niri config (skel)"
 arch=('any')
 url="https://taninux.kgva.ch"