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>

res/layout/activity_now_playing.xml

@@ -17,7 +17,7 @@
             android:layout_width="0dp" android:layout_height="wrap_content"
             android:layout_weight="1" android:orientation="vertical" android:gravity="center">
             <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
-                android:text="PLAYING FROM" android:textSize="9sp" android:textStyle="bold"
+                android:text="@string/playing_from" android:textSize="9sp" android:textStyle="bold"
                 android:textColor="@color/text2" />
             <TextView android:id="@+id/np_from" style="@style/Sub"
                 android:layout_width="wrap_content" android:layout_height="wrap_content"
@@ -133,13 +133,13 @@
             <TextView android:id="@+id/np_sleep_text"
                 android:layout_width="wrap_content" android:layout_height="wrap_content"
                 android:textSize="11sp" android:textColor="#B3FFFFFF" android:paddingLeft="5dp"
-                android:text="Sleep" />
+                android:text="@string/sleep" />
         </LinearLayout>
         <View android:layout_width="0dp" android:layout_height="1dp" android:layout_weight="1" />
         <TextView android:id="@+id/np_artist_link"
             android:layout_width="wrap_content" android:layout_height="match_parent"
             android:gravity="center_vertical" android:background="@drawable/bg_pressable"
             android:paddingLeft="8dp" android:paddingRight="8dp"
-            android:textSize="11sp" android:textColor="#B3FFFFFF" android:text="Album ›" />
+            android:textSize="11sp" android:textColor="#B3FFFFFF" android:text="@string/album_link" />
     </LinearLayout>
 </LinearLayout>