Initial commit: Omeron modular Hyprland setup framework

- Modular installer with gum-based TUI
- Fresh-install detection with auto GPU driver selection
- Preflight module for system detection (Intel/AMD/NVIDIA)
- Core modules: packages, dotfiles, services, SDDM
- Optional software installer (Obsidian, Neovim, VS Code, etc.)
- Homelab config module with dynamic AGS integration
- Two complete themes: Forest Neon and Rose Night
- 19 Hyprland control scripts + 4 AGS widgets
- Idempotent dotfile deployment with automatic backup
- YAML-based configuration, extensible module system
- Full logging to ~/.local/share/omeron/

modules/post/apply-theme.sh

@@ -0,0 +1,60 @@
+#!/usr/bin/env bash
+
+module_description() {
+  printf "Apply Theme - set default Hyprland theme and restart services\n"
+}
+
+module_required() { return 1; }
+module_should_skip() { return 1; }
+
+module_prereqs() {
+  if ! have hyprctl && ! have notify-send; then
+    log_warn "Neither hyprctl nor notify-send found. Theme can still be applied later."
+    return 0
+  fi
+}
+
+module_main() {
+  log_section "Theme Application"
+
+  local theme_script="$HOME/.config/hypr/Scripts/theme-menu.sh"
+  local themes_dir="$HOME/.config/hypr/Themes"
+
+  if [[ ! -f "$theme_script" ]]; then
+    log_warn "Theme script not found (dotfiles may not be deployed yet)"
+    return 1
+  fi
+
+  local default_theme="${OMERON_DEFAULT_THEME:-forest-neon}"
+
+  local theme_file=""
+  if [[ -f "$themes_dir/$default_theme.theme" ]]; then
+    theme_file="$themes_dir/$default_theme.theme"
+  elif [[ -f "$themes_dir/forest-neon.theme" ]]; then
+    theme_file="$themes_dir/forest-neon.theme"
+  elif [[ -f "$themes_dir/rose-night.theme" ]]; then
+    theme_file="$themes_dir/rose-night.theme"
+  else
+    local available
+    available="$(find "$themes_dir" -name '*.theme' -type f | head -1)"
+    if [[ -n "$available" ]]; then
+      theme_file="$available"
+    fi
+  fi
+
+  if [[ -z "$theme_file" ]]; then
+    log_warn "No theme files found in $themes_dir"
+    return 1
+  fi
+
+  if tui_confirm "Apply theme: $(basename "$theme_file" .theme).theme?"; then
+    log_info "Applying theme: $(basename "$theme_file")"
+    tui_spin "Applying theme..." bash "$theme_script" --apply "$theme_file"
+
+    if have notify-send; then
+      notify-send "Omeron" "Theme applied: $(basename "$theme_file" .theme)" >/dev/null 2>&1 || true
+    fi
+
+    log_success "Theme applied: $(basename "$theme_file" .theme)"
+  fi
+}