Theme switcher: larger, bordered, stronger shadow for visibility. Bump 03.09.33

- Bigger padding, 36px icon button, 1.25rem icon size
- 2px border (--theme-fab-border): white on dark bg, subtle on light
- Stronger box-shadow with double layer
- Hover scale + glow effect

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/joomla.asset.json

@@ -17,7 +17,7 @@
 			"defgroup": "Joomla.Template.Site",
 			"ingroup": "MokoCassiopeia.Template.Assets",
 			"path": "./media/templates/site/mokocassiopeia/joomla.asset.json",
-			"version": "03.09.32",
+			"version": "03.09.33",
 			"brief": "Joomla asset registry for MokoCassiopeia"
 		}
 	},