Dotfiles de la sesión e install.sh para Void

- home/: xinitrc, bashrc, bash_profile, gitconfig, picom, dunst,
  mimeapps.list y el fondo de pantalla. Se enlazan en ~ con la misma ruta.
- xinitrc: feh directamente en vez de .fehbg, y XDG_RUNTIME_DIR a mano solo
  si elogind no lo ha creado.
- mimeapps.list: firefox.desktop en vez del .desktop autogenerado.
- install.sh: instala los paquetes de Void, compila los programas, enlaza
  home/, prepara GnuPG (permisos, pinentry-gtk y agente SSH), copia
  sistema/ y activa servicios y grupos.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016UdJsHrbkmzhoCb6TthP2m

home/.config/picom/picom.conf

@@ -0,0 +1,44 @@
+# ==========================================
+# Configuración Minimalista de Picom (Everforest)
+# ==========================================
+
+# --- Backend y Rendimiento ---
+backend = "glx";
+vsync = true;
+
+# --- Sombras (Shadows) ---
+shadow = true;
+shadow-radius = 12;
+shadow-offset-x = -12;
+shadow-offset-y = -12;
+shadow-opacity = 0.4;
+# No dibujar sombra en ventanas flotantes extrañas
+shadow-exclude = [
+    "class_g = 'dmenu'",
+    "_GTK_FRAME_EXTENTS@:c"
+];
+
+# --- Desvanecimiento (Fading) ---
+fading = true;
+fade-delta = 5;
+fade-in-step = 0.03;
+fade-out-step = 0.03;
+
+# --- Transparencias (Opacity) ---
+inactive-opacity = 1.0;
+active-opacity = 1.0;
+frame-opacity = 1.0;
+inactive-opacity-override = false;
+
+# Hacer que SOLO la terminal (st) sea un 90% transparente
+opacity-rule = [
+    "90:class_g = 'st-256color' && focused",
+    "85:class_g = 'st-256color' && !focused"
+];
+
+# --- Esquinas redondeadas (Opcional, si tu build de picom lo soporta) ---
+corner-radius = 8;
+rounded-corners-exclude = [
+    "class_g = 'dwm'",
+    "class_g = 'dmenu'"
+];