feat(config): configure umbriel package and ignore runtime theme files

.chezmoiignore.tmpl

@@ -37,6 +37,8 @@ dist
 .config/niri/**
 .config/hypr
 .config/hypr/**
+.config/umbriel
+.config/umbriel/**
 .config/uwsm
 .config/uwsm/**
 .config/noctalia
@@ -52,11 +54,15 @@ dist
 .config/systemd/**
 .local/bin/kitty-day-save
 .local/bin/niri-launch
+.local/bin/umbriel-launch
 .config/fish/auto-Niri.fish
 .local/bin/cp-appid
 .local/bin/projects-sync
 {{ end }}
 
+# Noctalia's umbriel theme template output, rewritten on every theme change
+.config/umbriel/noctalia.toml
+
 # Runtime plugin state with embedded tokens — never managed
 .config/noctalia/plugins
 .config/noctalia/plugins/**