Add Obsidian to waybar, comment out nvidia-specific env vars

Add Obsidian as a waybar app launcher button alongside existing
launchers. Comment out nvidia-specific environment variables in
hypr/base.conf (LIBVA_DRIVER_NAME, GBM_BACKEND, etc.) so the
config works on all systems by default. Also includes prior
uncommitted changes: .gitignore updates, hyprpaper config,
package list updates, and various hypr config refinements.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitignore

@@ -1,3 +1,7 @@
 */colors.css
 */colors.conf
 backups/
+i3/config
+sway/config
+waybar/style.css
+wofi/style.css