feat: v0.2.0 — UI rebuilt to WordPress admin standards

v0.1.0 worked but felt like a third-party React widget bolted on
top of WordPress. v0.2.0 makes the player visually native to the
WP admin: postbox container, standard Play/Pause button with text
label, admin-colour-scheme aware accents, dashboard widget no
longer renders a card inside a card.

CHANGES
- inc/admin-page.php: main page now wraps the player in a
  .postbox > .postbox-header (with h2.hndle) > .inside structure.
  Custom rounded card / shadow stripped.
- inc/dashboard-widget.php: bare .radio-player content; WP already
  wraps dashboard widgets in a postbox, was double-card before.
- inc/about.php: version-history card promotes v0.2.0 to latest,
  demotes v0.1.0.
- assets/css/radio.css: rewrite. Strip custom shadows + oversized
  typography. Adopt WP body-text defaults. Use
  var(--wp-admin-theme-color, #2271b1) for volume-slider accent +
  link colours so the plugin picks up whichever admin colour
  scheme the user has chosen. About-page cards now use the
  postbox-style gray header + 1px border pattern.
- assets/js/radio.js: setPlayIcon() also flips the visible text
  label ("Play" ↔ "Pause"), not just the icon class. mirrorSelection()
  also updates the [data-radio-genre] element so the genre label
  stays in sync across surfaces.
- radio.php: Version: 0.1.0 -> 0.2.0; BUDDY_VERSION constant
  bumped likewise.
- CHANGELOG.md: new [0.2.0] entry explaining the visual overhaul.

NET EFFECT
- Same 44 stations, same audio path, same persistence, same
  updater, same AJAX endpoint. Pure visual change.
- The plugin now looks like part of WordPress admin instead of a
  guest widget.
- Closer to WP.org submission criteria — plugin reviewers look
  for native-styled plugins.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -9,6 +9,31 @@ Format: [Keep a Changelog 1.1.0](https://keepachangelog.com/en/1.1.0/) — versi
 
 ---
 
+## [0.2.0] — 2026-05-26
+
+### Changed — UI rebuilt to WordPress admin standards
+v0.1.0 worked but looked like a third-party React widget sitting on top of WordPress rather than part of it. v0.2.0 rebuilds the player UI to use WP-native patterns end-to-end.
+
+- **Main page** now uses the standard **`.postbox` container** (gray header bar + `.inside` body) instead of a custom rounded-shadow card.
+- **Play button** is now a standard **`.button .button-primary`** with both icon AND text label (Play / Pause), matching every other admin button. Replaces the giant blue circular icon-only button.
+- **Now Playing** uses left-aligned default body text with `.description` muted-gray for the station tagline. Replaces the centered large-typography card.
+- **Genre badge** moved to a small `.radio-player__station-genre` text label aligned right of the station name. Replaces the custom pill.
+- **Volume slider** now uses `accent-color: var(--wp-admin-theme-color)` — adapts to whichever admin colour scheme the user has chosen (Default / Light / Modern / Blue / Coffee / Ectoplasm / Midnight / Ocean / Sunrise).
+- **All link colours** likewise adapt to the user's admin theme via `var(--wp-admin-theme-color, #2271b1)`.
+- **Dashboard widget** content sits bare inside its `.inside` — WordPress already wraps it in a postbox. v0.1.0 was rendering a card inside a card.
+- **About page** cards now use postbox-style gray header bars + WP-standard 1px border + subtle shadow. Replaces the custom rounded grid.
+- **Credit footer** uses `.description` class, smaller and more native.
+
+### Net effect
+The plugin feels like part of WordPress now, not bolted onto it. Picks up your admin colour scheme automatically. Closer to WP.org submission criteria — they look for native-styled plugins during plugin review.
+
+### Not changed
+- Functionality identical to v0.1.0 — same 44 stations, same audio path, same user_meta persistence, same updater, same AJAX endpoint.
+- No behaviour change for end users; this is purely visual.
+- About page version-history card promotes v0.2.0 to "latest", demotes v0.1.0.
+
+---
+
 ## [0.1.0] — 2026-05-26
 
 **Radio is born.** First release of a new standalone WordPress plugin extracted-and-rebuilt from the radio feature that lives inside RangerPlex. Radio stands on its own as a focused, friendly companion plugin for the WordPress dashboard — a tab of background music while you work.