fix: TUI mit drei Backends (gum/whiptail/basic) + gum auto-install auf frischen Systemen

- tui.sh: komplett überarbeitet mit _strip_format() für basic mode
- whiptail als mittleres Fallback-Backend hinzugefügt
- Alle #{bold}/#{normal}-Markups entfernt, saubere ANSI-API (tui_info/tui_bold/...)
- install.sh: detect_environment() installiert gum vor allen Prompts
- Kein seq-Dependency mehr (printf -v statt seq)
- packages.sh/preflight.sh/homelab.sh/optional.sh auf neue TUI-API migriert

modules/core/preflight.sh

@@ -13,7 +13,7 @@ module_should_skip() { return 1; }
 module_prereqs() {
   require pacman pacman
   is_arch || {
-    log_error "This module requires an Arch-based system"
+    tui_error "This module requires an Arch-based system"
     return 1
   }
 }
@@ -25,50 +25,47 @@ module_main() {
   export OMERON_DETECTED_GPU
 
   system_summary
+  printf '\n'
 
   if is_fresh_install; then
     OMERON_FRESH_INSTALL=1
     export OMERON_FRESH_INSTALL
 
-    tui_format ""
-    tui_format "#{bold}#{yellow}⚠  Fresh system detected!#{normal}"
-    tui_format "Hyprland is not installed and no desktop session is running."
-    tui_format ""
+    tui_warn "Fresh system detected!"
+    tui_info "Hyprland is not installed and no desktop session is running."
+    printf '\n'
 
     local gpu_name
-    gpu_name="$(lspci -nn 2>/dev/null | grep -i 'vga\|3d\|display' | sed 's/.*: //' | head -1 || echo "unknown")"
+    gpu_name="$(lspci -nn 2>/dev/null | grep -E '\[0300\]|\[0302\]|\[0380\]' | sed 's/.*: //' | head -1 || echo "unknown")"
 
-    tui_format "#{bold}This installation will:#{normal}"
-    tui_format "  • Hyprland compositor + tools"
-    tui_format "  • GPU drivers for: ${gpu_name}"
-    tui_format "  • Audio system (PipeWire)"
-    tui_format "  • Network services (NetworkManager)"
-    tui_format "  • Fonts and icon themes"
-    tui_format "  • Dotfiles deployment"
-    tui_format ""
+    tui_bold "This installation will:"
+    tui_list \
+      "Hyprland compositor + tools" \
+      "GPU drivers for: ${gpu_name}" \
+      "Audio system (PipeWire)" \
+      "Network services (NetworkManager)" \
+      "Fonts and icon themes" \
+      "Dotfiles deployment"
+    printf '\n'
 
     if ! tui_confirm "Proceed with full system setup?"; then
-      log_info "Fresh installation aborted by user"
+      tui_info "Fresh installation aborted by user"
       exit 0
     fi
 
     if ! have paru && ! have yay; then
-      log_info "No AUR helper found. Installing paru..."
+      tui_info "No AUR helper found. Installing paru..."
       install_aur_helper
     fi
 
-    if ! have gum; then
-      log_info "Installing gum for better TUI..."
-      sudo_run pacman -S --needed --noconfirm gum 2>/dev/null || true
-      tui_style
+    if ((!OMERON_HAS_GUM)) && have pacman; then
+      tui_install_gum 2>/dev/null || true
     fi
 
-    log_success "Preflight complete — ready for full installation"
+    tui_success "Preflight complete — ready for full installation"
   else
-    tui_format ""
-    tui_format "#{bold}#{green}✓  Existing Hyprland system detected#{normal}"
-    tui_format "Will check for missing packages and updates."
-    tui_format ""
+    tui_success "Existing Hyprland system detected"
+    tui_info "Will check for missing packages and updates."
   fi
 }
 
@@ -84,7 +81,7 @@ install_aur_helper() {
   local build_dir
   build_dir="$(mktemp -d)"
 
-  log_info "Building paru from AUR..."
+  tui_info "Building paru from AUR..."
   sudo_run pacman -S --needed --noconfirm rustup 2>/dev/null || true
 
   if have rustup; then
@@ -93,10 +90,10 @@ install_aur_helper() {
 
   if git clone https://aur.archlinux.org/paru.git "$build_dir/paru" 2>/dev/null; then
     (cd "$build_dir/paru" && makepkg -si --needed --noconfirm) 2>&1 | tail -5 || {
-      log_warn "paru build failed, trying yay..."
+      tui_warn "paru build failed, trying yay..."
       if git clone https://aur.archlinux.org/yay.git "$build_dir/yay" 2>/dev/null; then
         (cd "$build_dir/yay" && makepkg -si --needed --noconfirm) 2>&1 | tail -5 || {
-          log_warn "yay build failed too. Install manually: paru -S paru-bin"
+          tui_warn "yay build failed too. Install manually: paru -S paru-bin"
         }
       fi
     }