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>

home/.zshrc

@@ -0,0 +1,13 @@
+# sway-rising zsh config (installed only when you have no ~/.zshrc)
+export ZSH="$HOME/.oh-my-zsh"
+ZSH_THEME="robbyrussell"
+plugins=(git zsh-autosuggestions zsh-syntax-highlighting)
+source $ZSH/oh-my-zsh.sh
+
+export PATH="$HOME/.local/bin:$PATH"
+
+# Aliases and tool hooks (fzf, zoxide, eza) live in ~/.oh-my-zsh/custom/sysadmin.zsh
+
+# nvm (optional)
+export NVM_DIR="$HOME/.nvm"
+[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"