Minamp 1.2

- Transcoding: send client identities Plex has a profile for (unknown ones get
  400 "unable to find a matching profile"), with a fresh session id per variant
- Stream proxy: fetch transcodes once into a temp file and serve every player
  request from it, so reconnects no longer restart the transcode (503s, tracks
  cut short); original files still pass Range requests through
- Sign-in: remember the pending link code so it survives Minamp being closed
  while the code is entered elsewhere; add "I've entered it - check now"
- Diagnostics: in-app connection log (DiagLog) with a streaming test and save
  to SD card; tokens are never logged

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

AndroidManifest.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.minamp"
-    android:versionCode="2"
-    android:versionName="1.1"
+    android:versionCode="3"
+    android:versionName="1.2"
     android:installLocation="auto">
 
     <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="10" />