fix: existing ui bugs fixed + polished

src/qml/Main.qml

@@ -20,7 +20,23 @@ Rectangle {
     property int histIndex: -1
 
     // --- Navigation API (pages call these via the injected `explorer`) ---
+    function sameDescriptor(a, b) {
+        if (!a || !b)
+            return false;
+        if (a.type !== b.type)
+            return false;
+        if (a.type === "home")
+            return true;
+        if (a.type === "search")
+            return a.query === b.query;
+        return a.param === b.param;
+    }
     function navigateTo(desc) {
+        // Navigating to the page we're already on is a no-op — don't grow the
+        // history (so e.g. Home-while-home doesn't wake the Back button).
+        var current = root.histIndex >= 0 ? root.history[root.histIndex] : null;
+        if (root.sameDescriptor(current, desc))
+            return;
         var h = root.history.slice(0, root.histIndex + 1);
         h.push(desc);
         root.history = h;

src/qml/components/CopyButton.qml

@@ -0,0 +1,55 @@
+import QtQuick
+import Logos.Theme
+
+// Tiny copy-to-clipboard button. Self-contained: writes `value` to the system
+// clipboard via a hidden TextEdit (which runs in the host GUI process, so it
+// reaches the real desktop clipboard), then flips to a check mark briefly as
+// confirmation.
+Item {
+    id: root
+
+    property string value: ""
+    property int size: 22
+    implicitWidth: size
+    implicitHeight: size
+
+    // Off-screen helper used purely to push text onto the clipboard.
+    TextEdit { id: clip; visible: false }
+
+    Rectangle {
+        anchors.fill: parent
+        radius: Theme.spacing.radiusSmall
+        color: hover.hovered ? Theme.palette.backgroundSecondary : "transparent"
+
+        HoverHandler { id: hover }
+        TapHandler {
+            onTapped: {
+                clip.text = root.value;
+                clip.selectAll();
+                clip.copy();
+                clip.text = "";
+                icon.source = icon.checkUrl;
+                resetTimer.restart();
+            }
+        }
+
+        Image {
+            id: icon
+            anchors.centerIn: parent
+            property url copyUrl: Qt.resolvedUrl("../icons/copy.svg")
+            property url checkUrl: Qt.resolvedUrl("../icons/check.svg")
+            source: copyUrl
+            sourceSize.width: Math.round(root.size * 0.72)
+            sourceSize.height: Math.round(root.size * 0.72)
+            width: Math.round(root.size * 0.72)
+            height: Math.round(root.size * 0.72)
+            fillMode: Image.PreserveAspectFit
+        }
+
+        Timer {
+            id: resetTimer
+            interval: 1200
+            onTriggered: icon.source = icon.copyUrl
+        }
+    }
+}

src/qml/components/InfoRow.qml

@@ -12,6 +12,7 @@ RowLayout {
     property string label: ""
     property string value: ""
     property bool mono: false
+    property bool copyable: false
     property color valueColor: Theme.palette.text
 
     spacing: Theme.spacing.medium
@@ -36,4 +37,10 @@ RowLayout {
         Layout.fillWidth: true
         Layout.alignment: Qt.AlignTop
     }
+
+    CopyButton {
+        visible: root.copyable && root.value.length > 0
+        value: root.value
+        Layout.alignment: Qt.AlignTop
+    }
 }

src/qml/icons/check.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="#a6e3a1" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round">
+  <polyline points="20 6 9 17 4 12"/>
+</svg>

src/qml/icons/copy.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="#cdd6f4" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+  <rect x="9" y="9" width="13" height="13" rx="2" ry="2"/>
+  <path d="M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1"/>
+</svg>

src/qml/pages/AccountPage.qml

@@ -49,13 +49,13 @@ Item {
                 Layout.fillWidth: true
                 visible: page.loaded && Object.keys(page.account).length > 1
 
-                InfoRow { label: "Account ID"; value: page.account.accountId || ""; mono: true }
+                InfoRow { label: "Account ID"; value: page.account.accountId || ""; mono: true; copyable: true }
                 InfoRow {
                     label: "Balance"
                     value: page.account.balance || "0"
                     valueColor: Theme.palette.success
                 }
-                InfoRow { label: "Program Owner"; value: page.account.programOwner || ""; mono: true }
+                InfoRow { label: "Program Owner"; value: page.account.programOwner || ""; mono: true; copyable: true }
                 InfoRow { label: "Nonce"; value: page.account.nonce || "0" }
                 InfoRow {
                     label: "Data Size"

src/qml/pages/BlockPage.qml

@@ -49,7 +49,7 @@ Item {
                 visible: page.loaded && Object.keys(page.block).length > 0
 
                 InfoRow { label: "Block ID"; value: String(page.block.blockId !== undefined ? page.block.blockId : "") }
-                InfoRow { label: "Hash"; value: page.block.hash || ""; mono: true }
+                InfoRow { label: "Hash"; value: page.block.hash || ""; mono: true; copyable: true }
 
                 // Previous hash — a clickable link to the previous block when not genesis.
                 RowLayout {
@@ -68,6 +68,11 @@ Item {
                             onTapped: page.explorer.navigateBlock(Number(page.blockId) - 1)
                         }
                     }
+                    CopyButton {
+                        visible: (page.block.prevBlockHash || "").length > 0
+                        value: page.block.prevBlockHash || ""
+                        Layout.alignment: Qt.AlignTop
+                    }
                 }
 
                 InfoRow { label: "Timestamp"; value: page.block.timestampText || "" }
@@ -80,7 +85,7 @@ Item {
                     Item { Layout.fillWidth: true }
                 }
 
-                InfoRow { label: "Signature"; value: page.block.signature || ""; mono: true }
+                InfoRow { label: "Signature"; value: page.block.signature || ""; mono: true; copyable: true }
                 InfoRow { label: "Transactions"; value: String(page.block.txCount !== undefined ? page.block.txCount : 0) }
             }
 

src/qml/pages/TransactionPage.qml

@@ -48,7 +48,7 @@ Item {
                 Layout.fillWidth: true
                 visible: page.loaded && Object.keys(page.tx).length > 0
 
-                InfoRow { label: "Hash"; value: page.tx.hash || ""; mono: true }
+                InfoRow { label: "Hash"; value: page.tx.hash || ""; mono: true; copyable: true }
                 RowLayout {
                     Layout.fillWidth: true
                     spacing: Theme.spacing.medium
@@ -60,7 +60,7 @@ Item {
                 // Public.
                 InfoRow {
                     visible: page.txType === "Public"
-                    label: "Program ID"; value: page.tx.programId || ""; mono: true
+                    label: "Program ID"; value: page.tx.programId || ""; mono: true; copyable: true
                 }
                 InfoRow {
                     visible: page.txType === "Public"