refactor: migrate from shell-based sync to mise dotfiles management

- Replace sync-config/sync-script with mise.toml [dotfiles] directives
- Convert installer scripts to mise tasks (shells, desktop, theme, webapps)
- Remove config/nvim-old (deprecated neovim config)
- Add omarchy theme system with multi-app configs (btop, hyprland, kitty, foot, tmux, etc.)
- Move SSH hosts to config.d/* include pattern
- Add Tera templates for dynamic config generation (git-local, dofiles.conf)
- Update pi agent settings (0.80.10, packages list)
- Add mise tasks for pi plugin setup and nvim tooling

config/omarchy/default/rofi.rasi

@@ -0,0 +1,26 @@
+* {
+    background: #1a1b26;
+    foreground: #a9b1d6;
+    active-background: #9ece6a;
+    urgent-background: #f7768e;
+
+    normal-foreground: #e0af68;
+    normal-background: #1a1b26;
+
+    selected-foreground: #c0caf5;
+    selected-background: #7aa2f7;
+
+    seperator-color: #1a1b26;
+    border-color: #32344a;
+
+    prompt-color: #7aa2f7;
+    prompt-background-color: #32344a;
+
+    window-border-size: 1px;
+    window-border-radius: 8px;
+
+    background-color: @background;
+    text-color: @foreground;
+}
+
+