Issue #7: Replace cheap title-bar play/view icons with aligned LED indicators

Forgejo: http://100.120.38.37:3001/from-admin/riptide/issues/7

Summary

The current play/view/title-bar icons look cheap/simple and are positioned too far left, outside the highlighted/focused region. This makes the focused state look sloppy. Replace them with a cleaner indicator treatment, starting with a simple LED/orb-style lit indicator.

Desired Behavior

• Replace the current simple play/view icon treatment with a clean LED/orb indicator.
• Indicator sits inside the focused/highlighted row/title region.
• Active, selected, and current-playing states are readable without clutter.
• Visual language stays consistent with RipTide’s cyber-aqua/GITS style.