feat(display): Bible Verse screensaver + longer idle timeouts

- ScreensaverType::BibleVerse launches one.tactility.bibleverse on
  idle (falls back to black when not installed); tap stops the app
  and returns to launcher; 30-minute backlight auto-off stops it too
- Timeout options extended to 15/30 minutes; auto-off 5m -> 30m
- Screensaver dropdown lists Bible Verse

Tactility/Source/settings/DisplaySettings.cpp

@@ -121,6 +121,8 @@ static std::string toString(ScreensaverType type) {
             return "StackChan";
         case McpScreen:
             return "McpScreen";
+        case BibleVerse:
+            return "BibleVerse";
         default:
             std::unreachable();
     }
@@ -145,6 +147,9 @@ static bool fromString(const std::string& str, ScreensaverType& type) {
     } else if (str == "McpScreen") {
         type = ScreensaverType::McpScreen;
         return true;
+    } else if (str == "BibleVerse") {
+        type = ScreensaverType::BibleVerse;
+        return true;
     } else {
         return false;
     }