Fedora installer, cleanup and screenshots

- install.sh rewritten for Fedora: dry-run, --check, backups, oh-my-zsh, lazygit, swappy
- outputs-setup.sh (monitor layout for new hardware) and doctor.sh (health check)
- screenshot.sh: region / full / window / scroll / last / edit (swappy), saved and copied
- remove waybar, swaync, dunst, rofi and their helper scripts, wallpaper picker, mirror.sh
- wallpapers handled by DMS; keep only the favourite one
- 00-session.conf for portals; swayfx-only layer rules split into 21-dms-effects.conf

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

.config/dms/settings.json

@@ -131,7 +131,7 @@
     }
   ],
   "configVersion": 42,
-  "popupTransparency": 0.86,
+  "popupTransparency": 0.95,
   "fontFamily": "JetBrains Mono Medium",
   "audioVisualizerEnabled": true,
   "scrollTitleEnabled": true,
@@ -267,5 +267,7 @@
     }
   ],
   "monoFontFamily": "JetBrains Mono",
-  "displayFontFamily": "JetBrains Mono"
+  "displayFontFamily": "JetBrains Mono",
+  "fontWeight": 300,
+  "fontScale": 1
 }