fix: interval IME, URL truncation, remove OK button

- Replace setSingleLine(true) with setMaxLines(1) for interval EditText
     (setSingleLine breaks IME_ACTION_DONE on numeric keyboards / Android TV)
   - URL field: setMaxLines(1) to show only beginning (~20 chars)
   - Remove explicit OK button from interval row

Author: ystinia

app/build.gradle

@@ -18,8 +18,8 @@ android {
         applicationId "com.openipc.decoder"
         minSdk 21
         targetSdk 36
-        versionCode 18
-        versionName "1.18"
+        versionCode 19
+        versionName "1.19"
     }
 
     // Signing credentials from environment variables; null when absent.