feat(ui): unify brand accents and polish shared controls

Standardize highlighted buttons, selected controls, and loading
indicators on coollabs accent colors; improve light-mode log toolbar
styling; enhance small popups with compact/icon modes; and align
navbars, helpers, and related layouts with matching tests.

resources/views/components/loading.blade.php

@@ -2,7 +2,7 @@
 
 <div {{ $attributes->merge(['class' => 'inline-flex items-center justify-center gap-2 text-[13px] text-neutral-500 dark:text-fg-dim']) }}
     role="status" aria-live="polite">
-    <svg @class(['shrink-0 animate-spin', 'size-3' => $compact, 'size-4' => ! $compact]) viewBox="0 0 24 24"
+    <svg @class(['loading-indicator shrink-0 animate-spin', 'size-3' => $compact, 'size-4' => ! $compact]) viewBox="0 0 24 24"
         fill="none" aria-hidden="true">
         <circle class="opacity-20" cx="12" cy="12" r="9" stroke="currentColor" stroke-width="2" />
         <path class="opacity-80" d="M21 12a9 9 0 0 0-9-9" stroke="currentColor" stroke-width="2"