refactor: migrate to template-based theme system, clean up old per-theme configs

- Remove per-theme app configs (alacritty, foot, ghostty, hyprland,
  hyprlock, mako, rofi, swayosd, tmux, walker, waybar, etc.) now
  handled by default/themed/ templates
- Update omarchy scripts (bg-next, list, set) for new template flow
- Update configs: bootstrap, nvim, rofi, tmux, mako
- Tweak installers (02-install-base.sh, btop, desktop, goose, nvim,
  obsidian, theme, tmux)
- Remove obsolete hyprland-rofi-* and hyprland-walker-* scripts
- Update neovim.lua across remaining themes

config/rofi/config.rasi

@@ -1,8 +1,16 @@
-configuration{
+@theme "theme"
+
+* {
+  border: 1;
+  margin: 0;
+  padding: 0;
+  spacing: 0;
+}
+
+configuration {
     combi-modes: [window,drun];
     icon-theme: "Oranchelo";
     show-icons: true;
-    terminal: "foot";
     drun-display-format: "{icon} {name}";
     location: 0;
     disable-history: false;
@@ -12,11 +20,98 @@ configuration{
     display-window: "  Window";
     display-Network: " 󰤨  Network";
     sidebar-mode: true;
-}
+    font: "MonaspiceRn Nerd Font 15";
 
-@theme "theme"
+    drun {
+        display-name: "";
+    }
+
+    run {
+        display-name: "";
+    }
+
+    window {
+        display-name: "";
+    }
+
+    timeout {
+        delay: 10;
+        action: "kb-cancel";
+    }
+}
 
 listview {
     columns: 1;
     lines: 10;
 }
+
+window {
+  transparency: "real";
+  border-color: @border-color;
+  border-radius: @window-border-radius;
+  border: @window-border-size;
+}
+
+message {
+  border-color: @seperator-color;
+  border: 1px dash 0px 0px;
+  padding: 1px;
+}
+
+mainbox {
+  children: [inputbar, listview];
+}
+
+textbox-prompt-colon {
+    str: ":";
+    expand: false;
+    text-color: @prompt-color;
+}
+
+inputbar {
+  border: 0px;
+  children: [prompt, entry];
+}
+
+entry {
+  border: 0px;
+  background-color: @prompt-background-color;
+  padding: 12px 3px;
+}
+
+prompt {
+  padding: 12px 16px 12px 12px;
+  text-color: @prompt-color;
+  background-color: @prompt-background-color;
+  border: 0px;
+}
+
+listview {
+  lines: 8;
+  border: 0px;
+}
+
+element {
+  border: 0px;
+//  children: [element-text];
+}
+
+element-text, element-icon, mode-switcher {
+  border: 0px;
+    background-color: inherit;
+    text-color: inherit;
+    padding: 10px;
+}
+
+element selected {
+    background-color: @selected-background;
+    text-color: @selected-foreground;
+}
+
+button {
+    padding: 10px;
+    background-color: @normal-background;
+    text-color: @normal-foreground;
+    vertical-align: 0.5;
+    horizontal-align: 0.5;
+}