feat: violet-chaton v2 — palette originale, kitty, AGS, Maple Mono NF

Refonte complete du rice. Palette 100% originale (Mitsuri Kanroji inspired),
zero emprunt Dracula/Catppuccin. 50 fichiers, 3200+ lignes.

Palette v2:
- palette.sh source de verite unique (dark + light)
- 5 accents (magenta, lilac, mitsuri, lavande, champagne)
- 4 semantiques derivees, 4 niveaux texte, 6 fonds
- Gradient signature: magenta → lilac → lavande → mitsuri
- Variante Light: fonds lavande, accents assombris WCAG

Terminal:
- kitty (remplace COSMIC Term comme principal)
- Maple Mono NF (cursive italics, ligatures)
- Cursor trail magenta, splits/layouts tiling, undercurl
- Vi-mode zsh avec cursor shape adaptatif

Shell:
- starship 3 lignes (palette nommee, brain_name, battery, sudo)
- zshrc v2 (nouveaux outils, fzf pimp, shell functions, vi-mode)
- Commandes custom: proj, glog, fkill, colors, hotkeys, weather, y

Desktop:
- AGS config (bar 3-pills, OSD gradient, launcher, notifications)
- COSMIC Dark + Light v2 (7 fichiers RON chacun)
- COSMIC Term v2 (color schemes dark/light, Maple Mono NF)
- GTK3/GTK4 dark + light css
- Vivaldi theme v2

Outils:
- +kitty +dust +procs +tokei +sd +hyperfine +gping +Maple Mono NF
- Propagation palette sur: bat, btop, cava, yazi, lazygit, rofi,
  delta, fastfetch, atuin, ls-colors, vivaldi
- Claude Code statusline brain-aware

Docs:
- README v2 complet (palette, structure, raccourcis, commandes)
- help.md v2 (reference exhaustive)

INSTALL/themes/violet-chaton-cava.conf

@@ -17,16 +17,16 @@ mono_option = average
 reverse = 0
 
 [color]
-# background commenté = transparent
+# background commente = transparent
 gradient = 1
-gradient_color_1 = '#ff79c6'
-gradient_color_2 = '#f079d8'
-gradient_color_3 = '#e079ea'
-gradient_color_4 = '#e79cfe'
-gradient_color_5 = '#c0b0fe'
-gradient_color_6 = '#99c4fe'
-gradient_color_7 = '#8bd4fe'
-gradient_color_8 = '#8be9fd'
+gradient_color_1 = '#ff4da6'
+gradient_color_2 = '#e276d4'
+gradient_color_3 = '#c9a0ff'
+gradient_color_4 = '#b6a8ff'
+gradient_color_5 = '#a4b4ff'
+gradient_color_6 = '#9fc8d4'
+gradient_color_7 = '#9adba8'
+gradient_color_8 = '#82e8a0'
 
 [smoothing]
 monstercat = 1