v2.2.0

What's Changed

• fix: MSRV, optdepends AUR y límite size ioctl (post-2.1.0) by @Alexendros in #2
• feat: mesa de luz acabada — bandeja, temas, efectos, ajustes e i18n by @Alexendros in #3
• feat: restore persistente + lanzador GUI por paquete by @Alexendros in #4
• feat: v2.2.0 — bump, README atractivo, docs e GIF demo by @Alexendros in #5
• fix: GLibUnix.signal_add y ROADMAP Ayatana verificado by @Alexendros in #6
• feat: brillo 1-5, diálogo udev y selftest de bandeja by @Alexendros in #7
• docs: fecha de release 2.2.0 by @Alexendros in #8
• fix: generar .mo antes de cargo deb en el release by @Alexendros in #9

Full Changelog: v2.1.0...v2.2.0