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/packages.sh

@@ -10,7 +10,7 @@ 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
   }
 }
@@ -22,7 +22,7 @@ module_main() {
   local all_packages=()
 
   if ((OMERON_FRESH_INSTALL)); then
-    tui_format "#{bold}Fresh install mode — installing everything#{normal}"
+    tui_bold "Fresh install mode — installing everything"
     groups=(
       "hyprland"
       "gpu"
@@ -34,7 +34,7 @@ module_main() {
       "development"
     )
   else
-    tui_format "#{bold}Existing system — checking for missing packages#{normal}"
+    tui_bold "Existing system — checking for missing packages"
     groups=(
       "hyprland"
       "audio"
@@ -64,37 +64,38 @@ module_main() {
     fi
   done
 
-  tui_format ""
-  tui_format "#{bold}Package Summary:#{normal}"
-  tui_format "  Total packages:  ${total}"
-  tui_format "  Already installed: ${existing}"
-  tui_format "  To install:        ${missing}"
-  tui_format ""
+  tui_separator
+  tui_bold "Package Summary"
+  tui_info "Total packages:  $(tui_bold "$total")"
+  tui_success "Already installed: $(tui_bold "$existing")"
+  if ((missing > 0)); then
+    tui_warn "To install:        $(tui_bold "$missing")"
+  fi
+  printf '\n'
 
   if ((missing == 0)); then
-    log_success "All packages already installed"
+    tui_success "All packages already installed"
     return 0
   fi
 
   if ! tui_confirm "Install ${missing} missing packages?"; then
-    log_info "Package installation skipped by user"
+    tui_info "Package installation skipped by user"
     return 0
   fi
 
   if ((OMERON_FRESH_INSTALL)); then
-    log_info "Running system update first..."
+    tui_info "Running system update first..."
     sudo_run pacman -Syu --noconfirm 2>&1 | tail -3 || true
   fi
 
   local pacman_pkgs=()
   local aur_pkgs=()
-  local gpu_pkgs=()
+  local pkg
 
   for pkg in "${all_packages[@]}"; do
     if is_package_installed "$pkg"; then
       continue
     fi
-
     if pacman -Si "$pkg" >/dev/null 2>&1; then
       pacman_pkgs+=("$pkg")
     else
@@ -103,22 +104,22 @@ module_main() {
   done
 
   if ((${#pacman_pkgs[@]})); then
-    log_info "Installing ${#pacman_pkgs[@]} pacman packages..."
+    tui_info "Installing ${#pacman_pkgs[@]} pacman packages..."
     tui_spin "Installing core packages..." sudo_run pacman -S --needed --noconfirm "${pacman_pkgs[@]}"
-    log_success "Core packages installed"
+    tui_success "Core packages installed"
   fi
 
   if ((${#aur_pkgs[@]})); then
     if have paru || have yay; then
-      log_info "Installing ${#aur_pkgs[@]} AUR packages..."
-      install_aur "${aur_pkgs[@]}" || log_warn "Some AUR packages may not have been installed"
+      tui_info "Installing ${#aur_pkgs[@]} AUR packages..."
+      install_aur "${aur_pkgs[@]}" || tui_warn "Some AUR packages may not have been installed"
     else
-      log_warn "No AUR helper found. Install manually: ${aur_pkgs[*]}"
+      tui_warn "No AUR helper found. Install manually: ${aur_pkgs[*]}"
     fi
   fi
 
-  log_success "Package installation complete"
-  log_info "Installed: $((missing - ${#aur_pkgs[@]}))  |  AUR/optional: ${#aur_pkgs[@]}"
+  tui_success "Package installation complete"
+  tui_info "Installed: $((missing - ${#aur_pkgs[@]}))  |  AUR/optional: ${#aur_pkgs[@]}"
 }
 
 get_group_packages() {