chore(version): bump 03.09.13 → 03.09.14, CSS padding variables, Gitea URLs

- Replace hardcoded padding with CSS variables in footer and header
- Bump version to 03.09.14 across all manifest files
- Switch update server and download URLs from GitHub to Gitea

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": "03.09.02",
+			"version": "03.09.14",
 			"brief": "Joomla asset registry for MokoCassiopeia"
 		}
 	},