App 2.27.2: Terminal in the accent colour; Original as a colour choice

Retro and Terminal are one entry each; the accent colour drop-down
offers "Original" first for them, remembered per style. The old
"Retro (accent colour)" entry is folded in and its stored value
migrated. Emulator only.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LhzAVaUyqcw5PkGjz4mWW6

app/build.gradle

@@ -34,8 +34,8 @@ android {
         applicationId "com.stinnesbeck.nilsmg4"
         minSdk 27
         targetSdk 36
-        versionCode 122
-        versionName "2.27.1"
+        versionCode 123
+        versionName "2.27.2"
 
         // Nothing about the server ships in the APK: its URL and ingest token are entered in
         // the app's Server tab (ServerConfig), and the database is only reachable by the server.