Minamp 1.5: Galician interface

- Interface in Galician by default regardless of the phone's language, with
  English selectable under Axustes -> Idioma; switching rebuilds the screens
- All text in tools/strings.py (key -> English, Galician), generating
  res/values/strings.xml (gl) and res/values-en/strings.xml; layouts now use
  string resources
- util/Tr.java: translations for the network and Plex layers, which can't
  read Android resources (falls back to English in desktop tests)
- net/RefusedException: distinguish "server answered but refused" from
  connection failures
- The connection log stays in English for troubleshooting

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

README.md

@@ -3,6 +3,13 @@
 A small Plexamp-style music player for Plex, built for the Samsung Galaxy Mini (GT-S5570:
 Android 2.2/2.3, 240×320 ldpi screen, 600 MHz ARMv6, 384 MB RAM). Runs on any Android 2.2+ phone.
 
+## Language
+
+The interface is in **Galician** by default, whatever language the phone is set to. English is
+available under *Axustes → Idioma*. All text lives in `tools/strings.py` (key → English, Galician),
+which generates `res/values/strings.xml` (Galician) and `res/values-en/strings.xml`; the connection
+log stays in English since it's meant for troubleshooting.
+
 ## Install
 
 1. On the phone: **Settings → Applications → Unknown sources** (tick it).