fix(#553): make the Build value part of the 7-tap target

The build stamp rendered as SelectableText, which ate taps for selection, so
only the plain 'Build' label triggered the unlock. When a row is tappable it
now uses a plain Text so the whole row (label + value) is one InkWell target;
copy stays on the button. Part of #509/#553.

Agent: QuietSnow (session 31eaba02)

lib/screens/settings_screen.dart

@@ -954,13 +954,25 @@ class _SettingsScreenState extends State<SettingsScreen> {
               crossAxisAlignment: CrossAxisAlignment.start,
               children: [
                 Expanded(
-                  child: SelectableText(
+                  // When the row is tappable, use a plain Text so the value is
-                    value,
+                  // part of the InkWell tap target (a SelectableText would eat
-                    style: theme.textTheme.bodyLarge?.copyWith(
+                  // the tap for selection). Copy is still available via the
-                      color: valueColor,
+                  // button. (#553)
-                      fontWeight: FontWeight.w500,
+                  child: onTap != null
-                    ),
+                      ? Text(
-                  ),
+                          value,
+                          style: theme.textTheme.bodyLarge?.copyWith(
+                            color: valueColor,
+                            fontWeight: FontWeight.w500,
+                          ),
+                        )
+                      : SelectableText(
+                          value,
+                          style: theme.textTheme.bodyLarge?.copyWith(
+                            color: valueColor,
+                            fontWeight: FontWeight.w500,
+                          ),
+                        ),
                 ),
                 IconButton(
                   icon: const Icon(Icons.copy, size: 18),