splitted the code base into more components and implemented safety measures to Crypto.qml, also added missing themes and removed hardcoded values

config/config.qml

@@ -6,7 +6,7 @@ import "themes"
 QtObject {
     id: root
 
-    readonly property var theme: Tropicalnight
+    readonly property var theme: Goldencity
 
     // ────────────────────────────────────────────────────────────────────────
     // Widgets
@@ -49,7 +49,7 @@ QtObject {
 
     // ── Timezone (IANA name, e.g. "America/New_York", "Europe/London") ──────────
     // Leave empty to use the system timezone.
-    property string timezone: "America/New_York"
+    property string timezone: none
 
     // Date format used in the clock popup and background date widget.
     // "MDY" → month/day/year   (e.g. May 14, 2026)
@@ -76,7 +76,7 @@ QtObject {
     property int volumeSliderHeight: 2
     property int volumeHandleSize:   20
     property int volumePopupWidth:   280
-    property int volumeOutputMax:    100
+    property int volumeOutputMax:    140
     property int volumeInputMax:     200