feat(wallet): humanize shared wallet experience

Consolidate wallet account decoding and portfolio handling around the shared Rust IDL decoder. Simplify AMM wallet integration, remove obsolete caches and network plumbing, and cover account selection and live flows.

apps/shared/wallet/qml/internal/CopyButton.qml

@@ -5,9 +5,11 @@ WalletIconButton {
 
     signal copyRequested
 
+    property string copyText: ""
+    property string copyLabel: qsTr("Copy")
     property bool copied: false
 
-    accessibleName: root.copied ? qsTr("Copied") : qsTr("Copy")
+    accessibleName: root.copied ? qsTr("Copied") : root.copyLabel
     iconSource: root.copied
         ? Qt.resolvedUrl("icons/checkmark.svg")
         : Qt.resolvedUrl("icons/copy.svg")
@@ -18,7 +20,24 @@ WalletIconButton {
         onTriggered: root.copied = false
     }
 
+    TextEdit {
+        id: clipboardProxy
+
+        visible: false
+    }
+
+    function copyToClipboard() {
+        if (root.copyText.length === 0)
+            return
+        clipboardProxy.text = root.copyText
+        clipboardProxy.selectAll()
+        clipboardProxy.copy()
+        clipboardProxy.deselect()
+        clipboardProxy.text = ""
+    }
+
     onClicked: {
+        root.copyToClipboard()
         root.copyRequested()
         root.copied = true
         resetTimer.restart()