From c3f91fbd3b3c064e2ded78cf307d23a8d6deacc7 Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:24:20 +0700
Subject: [PATCH 01/21] fix(injector): ALWAYS send 4I+4V table snapshot
 atomically before each SV START

---
 apps/arstack_studio/qml/WorkflowBar.qml | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/apps/arstack_studio/qml/WorkflowBar.qml b/apps/arstack_studio/qml/WorkflowBar.qml
index e49593114..64f990e71 100644
--- a/apps/arstack_studio/qml/WorkflowBar.qml
+++ b/apps/arstack_studio/qml/WorkflowBar.qml
@@ -281,9 +281,12 @@ SurfacePanel {
             controller.showMessage(ribbon.startReason(), false)
             return
         }
-        const accepted = controller.pendingApply
-            ? smartSession.requestStartWithScenario(controller.startScenarioSnapshot())
-            : smartSession.requestStart()
+        // Every START uploads the current visible 4I+4V model. The board may
+        // still hold an older scenario after STOP, reconnect, PTP role change,
+        // or another session. Never take a bare START shortcut from a GUI
+        // that displays different phasor angles.
+        const accepted = smartSession.requestStartWithScenario(
+            controller.startScenarioSnapshot())
         if (!accepted) {
             controller.pendingApply = true
             controller.showMessage("Start rejected. Check device status.", true)

From 8843d9c8ca364a048b4e70a9c0cddc5779006eca Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:25:34 +0700
Subject: [PATCH 02/21] fix(studio): default verified PTP SOURCE, live-setpoint
 failure handling, stacked full-height voltage/current

---
 apps/arstack_studio/qml/Main.qml | 54 ++++++++++++++++++++++++++------
 1 file changed, 45 insertions(+), 9 deletions(-)

diff --git a/apps/arstack_studio/qml/Main.qml b/apps/arstack_studio/qml/Main.qml
index 66a0daf89..b5a5b87f1 100644
--- a/apps/arstack_studio/qml/Main.qml
+++ b/apps/arstack_studio/qml/Main.qml
@@ -119,6 +119,8 @@ ApplicationWindow {
     // an explicit PTP ON can be restored after a firmware reflash/reconnect
     // without introducing an uncontrolled power-on publisher.
     property bool ptpDesiredForSession: false
+    property bool ptpDefaultStartPending: true
+    property bool ptpExplicitOff: false
     property string ptpDesiredRole: "SOURCE"
     property bool ptpRestoreAfterFirmware: false
     property int ptpRestoreChecks: 0
@@ -198,6 +200,8 @@ ApplicationWindow {
         function onDeviceVerifiedChanged() {
             root.pendingApply = true
             root.offlinePreviewRunning = false
+            if (device.deviceVerified && !root.ptpExplicitOff)
+                root.ptpDefaultStartPending = true
         }
     }
 
@@ -215,6 +219,28 @@ ApplicationWindow {
         }
     }
 
+    // One automatic SOURCE start on verified connection. An explicit OFF
+    // cancels this for the remainder of the Studio session; never send PTP
+    // commands without a verified board or while firmware is updating.
+    Timer {
+        interval: 400
+        repeat: true
+        running: root.ptpDefaultStartPending && !root.ptpExplicitOff && device.deviceVerified
+        onTriggered: {
+            if (device.ptpRunning) {
+                root.ptpDefaultStartPending = false
+                return
+            }
+            const session = workflowBar.session
+            if (!session || !session.startReady || session.updatingFirmware ||
+                    device.ptpStarting || !device.ptpAvailable)
+                return
+            root.ptpDefaultStartPending = false
+            if (!root.startPtpRole("SOURCE"))
+                root.showMessage("PTP auto-start was not accepted. Use PTP On to retry.", true)
+        }
+    }
+
     Timer {
         interval: 300
         repeat: true
@@ -317,6 +343,8 @@ ApplicationWindow {
         const accepted = profilePanel.startPtpRole(role)
         if (accepted) {
             root.ptpDesiredForSession = true
+            root.ptpExplicitOff = false
+            root.ptpDefaultStartPending = false
             root.ptpDesiredRole = role
         }
         return accepted
@@ -324,6 +352,8 @@ ApplicationWindow {
 
     function requestStopPtp() {
         root.ptpDesiredForSession = false
+        root.ptpDefaultStartPending = false
+        root.ptpExplicitOff = true
         root.ptpRestoreAfterFirmware = false
         return workflowBar.session && workflowBar.session.requestStopPtp()
     }
@@ -468,8 +498,11 @@ ApplicationWindow {
         selectSignal(group, row)
         markScenarioDirty()
         if (workflowBar.session && workflowBar.session.liveControlReady && !pendingApply) {
-            if (phaseLink && row < 3) sendLinkedGroup(group)
-            else sendSignal(group, row)
+            const sent = phaseLink && row < 3 ? sendLinkedGroup(group) : sendSignal(group, row)
+            if (!sent) {
+                pendingApply = true
+                showMessage("Setpoint not queued. STOP and START to apply all displayed 4I+4V values.", true)
+            }
         }
         return true
     }
@@ -932,8 +965,8 @@ ApplicationWindow {
 
                     ColumnLayout {
                         anchors.fill: parent
-                        anchors.margins: root.compactLayout ? 11 : 13
-                        spacing: root.compactLayout ? 6 : 8
+                        anchors.margins: root.compactLayout ? 8 : 9
+                        spacing: root.compactLayout ? 4 : 5
 
                         RowLayout {
                             Layout.fillWidth: true
@@ -1049,11 +1082,15 @@ ApplicationWindow {
                             }
                         }
 
-                        RowLayout {
+                        // Stack voltage above current. Both tables share the
+                        // available height instead of leaving an empty lower
+                        // half; the inner rows stretch with the desktop.
+                        ColumnLayout {
                             Layout.fillWidth: true
-                            Layout.preferredHeight: root.compactLayout ? 214 : 224
-                            Layout.maximumHeight: root.compactLayout ? 214 : 224
-                            spacing: 9
+                            Layout.fillHeight: true
+                            Layout.minimumHeight: 408
+                            Layout.preferredHeight: 422
+                            spacing: 7
                             SignalMatrix {
                                 id: voltageMatrix
                                 enabled: !workflowBar.startQueued
@@ -1136,7 +1173,6 @@ ApplicationWindow {
                                 compact: root.compactLayout
                             }
                         }
-                        Item { Layout.fillHeight: true }
                     }
                 }
 

From a2d938cb18babd2cfe7b9803bcb0455b636d70e3 Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:26:23 +0700
Subject: [PATCH 03/21] fix(studio UX): improve full-height tables, ribbon
 brand/button centering and stable checkbox hover

---
 apps/arstack_studio/qml/SignalMatrix.qml | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/apps/arstack_studio/qml/SignalMatrix.qml b/apps/arstack_studio/qml/SignalMatrix.qml
index 1c84e2b43..7eb1f375f 100644
--- a/apps/arstack_studio/qml/SignalMatrix.qml
+++ b/apps/arstack_studio/qml/SignalMatrix.qml
@@ -196,7 +196,9 @@ Rectangle {
                 }
 
                 Layout.fillWidth: true
-                Layout.preferredHeight: matrix.compact ? 40 : 42
+                Layout.fillHeight: true
+                Layout.minimumHeight: 36
+                Layout.preferredHeight: matrix.compact ? 39 : 40
                 color: signalRow.selected ? "#101c27"
                     : (magnitudeField.activeFocus || phaseField.activeFocus) ? "#0f1922"
                     : rowHover.hovered ? "#0d161e" : "transparent"
@@ -407,6 +409,5 @@ Rectangle {
             }
         }
 
-        Item { Layout.fillHeight: true }
     }
 }

From 284e11497b0aa48ab29d3ee0801dbc077e558b0f Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:26:28 +0700
Subject: [PATCH 04/21] fix(studio UX): improve full-height tables, ribbon
 brand/button centering and stable checkbox hover

---
 apps/arstack_studio/qml/ModernRibbon.qml | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/apps/arstack_studio/qml/ModernRibbon.qml b/apps/arstack_studio/qml/ModernRibbon.qml
index aa995b10d..8c218bf92 100644
--- a/apps/arstack_studio/qml/ModernRibbon.qml
+++ b/apps/arstack_studio/qml/ModernRibbon.qml
@@ -47,24 +47,24 @@ Rectangle {
         spacing: 6
 
         RowLayout {
-            Layout.preferredWidth: bar.compact ? 105 : 124
+            Layout.preferredWidth: bar.compact ? 150 : 176
             Layout.alignment: Qt.AlignVCenter
             spacing: 8
 
             Rectangle {
-                width: 28
-                height: 28
-                radius: 7
+                width: 40
+                height: 40
+                radius: 9
                 color: "#0d151d"
                 border.width: 1
                 border.color: bar.theme.lineSoft
                 Image {
                     anchors.centerIn: parent
-                    width: 15
-                    height: 15
+                    width: 28
+                    height: 28
                     source: Qt.resolvedUrl("../assets/material/smv_injector.svg")
-                    sourceSize.width: 30
-                    sourceSize.height: 30
+                    sourceSize.width: 56
+                    sourceSize.height: 56
                 }
             }
 
@@ -73,7 +73,7 @@ Rectangle {
                 text: "SMV Injector"
                 color: bar.theme.text
                 font.family: bar.uiFont
-                font.pixelSize: 11
+                font.pixelSize: bar.compact ? 14 : 15
                 font.weight: Font.DemiBold
                 elide: Text.ElideRight
                 verticalAlignment: Text.AlignVCenter

From bc0be48cccdbe8937f76246165dcd1d395aa1fa3 Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:26:33 +0700
Subject: [PATCH 05/21] fix(studio UX): improve full-height tables, ribbon
 brand/button centering and stable checkbox hover

---
 apps/arstack_studio/qml/RibbonAction.qml | 49 +++++++++++++-----------
 1 file changed, 27 insertions(+), 22 deletions(-)

diff --git a/apps/arstack_studio/qml/RibbonAction.qml b/apps/arstack_studio/qml/RibbonAction.qml
index a882bb495..c55a83ea0 100644
--- a/apps/arstack_studio/qml/RibbonAction.qml
+++ b/apps/arstack_studio/qml/RibbonAction.qml
@@ -38,28 +38,33 @@ Button {
         : tone === "warning" ? "#f5daaa"
         : tone === "danger" ? "#ffe3e6"
         : tone === "accent" || checked ? "#e1f1ff" : theme.textSoft
-    contentItem: ColumnLayout {
-        spacing: 3
-        Image {
-            visible: control.iconSource.toString().length > 0
-            source: control.hovered && control.enabled ? control.hoverPath : control.iconSource
-            Layout.alignment: Qt.AlignHCenter
-            Layout.preferredWidth: 24
-            Layout.preferredHeight: 24
-            sourceSize.width: 48
-            sourceSize.height: 48
-            opacity: control.enabled ? 1 : 0.3
-        }
-        Text {
-            id: caption
-            visible: !control.iconOnly
-            text: control.text
-            color: control.textColor
-            font: control.font
-            Layout.alignment: Qt.AlignHCenter
-            horizontalAlignment: Text.AlignHCenter
-            verticalAlignment: Text.AlignVCenter
-            elide: Text.ElideRight
+    // The content box owns full button geometry; its visual group is
+    // centered in both axes (Windows / 100–175% DPI).
+    contentItem: Item {
+        Column {
+            anchors.centerIn: parent
+            spacing: 4
+            Image {
+                visible: control.iconSource.toString().length > 0
+                source: control.hovered && control.enabled ? control.hoverPath : control.iconSource
+                anchors.horizontalCenter: parent.horizontalCenter
+                width: 24
+                height: 24
+                sourceSize.width: 48
+                sourceSize.height: 48
+                opacity: control.enabled ? 1 : 0.3
+            }
+            Text {
+                id: caption
+                visible: !control.iconOnly
+                text: control.text
+                color: control.textColor
+                font: control.font
+                anchors.horizontalCenter: parent.horizontalCenter
+                horizontalAlignment: Text.AlignHCenter
+                verticalAlignment: Text.AlignVCenter
+                elide: Text.ElideRight
+            }
         }
     }
     background: Rectangle {

From e2fe937e3bd29f1e57393089ca16e3127b07ee6c Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:26:38 +0700
Subject: [PATCH 06/21] fix(studio UX): improve full-height tables, ribbon
 brand/button centering and stable checkbox hover

---
 apps/arstack_studio/qml/StudioDarkCheckBox.qml | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/apps/arstack_studio/qml/StudioDarkCheckBox.qml b/apps/arstack_studio/qml/StudioDarkCheckBox.qml
index eedfce586..5d0730d12 100644
--- a/apps/arstack_studio/qml/StudioDarkCheckBox.qml
+++ b/apps/arstack_studio/qml/StudioDarkCheckBox.qml
@@ -8,7 +8,11 @@ CheckBox {
     property var theme
     property string uiFont: "Inter"
     implicitHeight: 30
+    hoverEnabled: true
     spacing: 9
+    padding: 0
+    // Disable native Windows hover glyph: one consistent 18px indicator.
+    background: Item {}
     font.family: uiFont
     font.pixelSize: 11
     indicator: Rectangle {
@@ -20,7 +24,8 @@ CheckBox {
         color: control.checked ? control.theme.accent : control.theme.surface2
         border.width: 1
         border.color: control.checked ? control.theme.accent
-                                      : control.activeFocus ? control.theme.textSoft : control.theme.line
+                                      : control.hovered || control.activeFocus
+                                        ? control.theme.textSoft : control.theme.line
         Text {
             anchors.centerIn: parent
             visible: control.checked

From f50c376beeb9ed258fe7b7a6d7ea9a0adc787bf0 Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:27:42 +0700
Subject: [PATCH 07/21] fix(studio): readable light-hover/dark-caption and
 centered advanced controls

---
 apps/arstack_studio/qml/CalmButton.qml | 54 +++++++++++++++-----------
 1 file changed, 31 insertions(+), 23 deletions(-)

diff --git a/apps/arstack_studio/qml/CalmButton.qml b/apps/arstack_studio/qml/CalmButton.qml
index ddddca61c..98f74608f 100644
--- a/apps/arstack_studio/qml/CalmButton.qml
+++ b/apps/arstack_studio/qml/CalmButton.qml
@@ -22,39 +22,47 @@ Button {
     Behavior on scale { NumberAnimation { duration: 70; easing.type: Easing.OutCubic } }
 
     readonly property color activeFill: !enabled ? "#10161d" :
-                                        tone === "success" ? (hovered ? "#1e5c43" : "#194d38") :
-                                        tone === "danger" ? (hovered ? "#523039" : theme.redSoft) :
-                                        tone === "accent" ? (hovered ? "#1d3c5e" : theme.accentSoft) :
-                                        (down ? "#1a2530" : hovered ? theme.raisedHover : "#141c25")
+                                        hovered ? "#e9f2fd" :
+                                        tone === "success" ? "#194d38" :
+                                        tone === "danger" ? theme.redSoft :
+                                        tone === "accent" ? theme.accentSoft :
+                                        down ? "#1a2530" : "#141c25"
     readonly property color activeEdge: !enabled ? theme.lineSoft :
+                                        hovered ? "#a6c9f2" :
                                         tone === "success" ? "#347a59" :
                                         tone === "danger" ? "#86434b" :
                                         tone === "accent" ? "#315f8d" :
                                         (activeFocus ? theme.accent : hovered ? "#3a4a5b" : theme.line)
     readonly property color activeText: !enabled ? theme.muted2 :
+                                        hovered ? "#142334" :
                                         tone === "success" ? "#d6f4e6" :
                                         tone === "danger" ? "#ffdce0" :
                                         tone === "accent" ? "#dcebff" : theme.textSoft
 
-    contentItem: Row {
-        spacing: control.iconSource.toString().length > 0 ? 7 : 0
-        anchors.centerIn: parent
-        Image {
-            visible: control.iconSource.toString().length > 0
-            width: control.iconSize
-            height: control.iconSize
-            anchors.verticalCenter: parent.verticalCenter
-            source: control.iconSource
-            sourceSize.width: control.iconSize * 2
-            sourceSize.height: control.iconSize * 2
-            opacity: control.enabled ? 0.94 : 0.30
-        }
-        Text {
-            text: control.text
-            color: control.activeText
-            font: control.font
-            anchors.verticalCenter: parent.verticalCenter
-            Behavior on color { ColorAnimation { duration: 90 } }
+    contentItem: Item {
+        Row {
+            spacing: control.iconSource.toString().length > 0 ? 7 : 0
+            anchors.centerIn: parent
+            Image {
+                visible: control.iconSource.toString().length > 0
+                width: control.iconSize
+                height: control.iconSize
+                anchors.verticalCenter: parent.verticalCenter
+                source: control.hovered && control.enabled
+                    ? control.iconSource.toString().replace("/assets/material/", "/assets/material_dark/")
+                    : control.iconSource
+                sourceSize.width: control.iconSize * 2
+                sourceSize.height: control.iconSize * 2
+                opacity: control.enabled ? 0.94 : 0.30
+            }
+            Text {
+                text: control.text
+                color: control.activeText
+                font: control.font
+                anchors.verticalCenter: parent.verticalCenter
+                horizontalAlignment: Text.AlignHCenter
+                verticalAlignment: Text.AlignVCenter
+            }
         }
     }
 

From 72b5592a8b0f348ed39e28de3d3b9d443dbab626 Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:27:47 +0700
Subject: [PATCH 08/21] fix(studio): readable light-hover/dark-caption and
 centered advanced controls

---
 apps/arstack_studio/qml/ConfigurationHub.qml | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/apps/arstack_studio/qml/ConfigurationHub.qml b/apps/arstack_studio/qml/ConfigurationHub.qml
index fecaa51a3..708e23d28 100644
--- a/apps/arstack_studio/qml/ConfigurationHub.qml
+++ b/apps/arstack_studio/qml/ConfigurationHub.qml
@@ -34,16 +34,18 @@ Item {
         font.weight: checked ? Font.DemiBold : Font.Medium
         contentItem: Label {
             text: parent.text
-            color: parent.checked ? hub.theme.text : hub.theme.muted
+            color: parent.hovered && !parent.checked ? "#142334"
+                : parent.checked ? hub.theme.text : hub.theme.muted
             font: parent.font
             horizontalAlignment: Text.AlignHCenter
             verticalAlignment: Text.AlignVCenter
         }
         background: Rectangle {
-            color: parent.checked ? hub.theme.raised : "transparent"
+            color: parent.hovered && !parent.checked ? "#e9f2fd"
+                : parent.checked ? hub.theme.raised : "transparent"
             radius: 6
-            border.width: parent.checked ? 1 : 0
-            border.color: hub.theme.line
+            border.width: parent.checked || parent.hovered ? 1 : 0
+            border.color: parent.hovered && !parent.checked ? "#a6c9f2" : hub.theme.line
             Rectangle {
                 visible: parent.parent.checked
                 anchors.left: parent.left
@@ -59,7 +61,7 @@ Item {
 
     ColumnLayout {
         anchors.fill: parent
-        spacing: 16
+        spacing: 11
 
         RowLayout {
             Layout.fillWidth: true

From 7b96dad9bd1933e2095a2bc05d4320fbb637022c Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:27:52 +0700
Subject: [PATCH 09/21] fix(studio): readable light-hover/dark-caption and
 centered advanced controls

---
 apps/arstack_studio/qml/StudioDarkComboBox.qml | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/apps/arstack_studio/qml/StudioDarkComboBox.qml b/apps/arstack_studio/qml/StudioDarkComboBox.qml
index 60f7afb00..6ce33ad21 100644
--- a/apps/arstack_studio/qml/StudioDarkComboBox.qml
+++ b/apps/arstack_studio/qml/StudioDarkComboBox.qml
@@ -21,7 +21,7 @@ ComboBox {
 
     background: Rectangle {
         radius: 7
-        color: combo.enabled ? (combo.hovered ? combo.theme.raisedHover : combo.theme.surface2)
+        color: combo.enabled ? (combo.hovered ? "#e9f2fd" : combo.theme.surface2)
                              : combo.theme.surface2
         border.width: 1
         border.color: combo.activeFocus ? combo.theme.accent : combo.theme.line
@@ -29,7 +29,7 @@ ComboBox {
 
     contentItem: Text {
         text: combo.displayText
-        color: combo.enabled ? combo.theme.text : combo.theme.muted
+        color: combo.enabled ? (combo.hovered ? "#142334" : combo.theme.text) : combo.theme.muted
         font: combo.font
         verticalAlignment: Text.AlignVCenter
         leftPadding: 12
@@ -39,7 +39,7 @@ ComboBox {
 
     indicator: Text {
         text: "\u25be"
-        color: combo.enabled ? combo.theme.textSoft : combo.theme.muted
+        color: combo.enabled ? (combo.hovered ? "#142334" : combo.theme.textSoft) : combo.theme.muted
         font.pixelSize: 14
         anchors.right: parent.right
         anchors.rightMargin: 11
@@ -54,7 +54,7 @@ ComboBox {
         highlighted: combo.highlightedIndex === index
         contentItem: Text {
             text: combo.textAt(choice.index)
-            color: combo.theme.text
+            color: choice.highlighted ? "#142334" : combo.theme.text
             font: combo.font
             verticalAlignment: Text.AlignVCenter
             elide: Text.ElideRight
@@ -63,7 +63,7 @@ ComboBox {
         }
         background: Rectangle {
             radius: 5
-            color: parent.highlighted ? combo.theme.accentSoft : combo.theme.raised
+            color: parent.highlighted ? "#e9f2fd" : combo.theme.raised
         }
     }
 

From 25c7a1a974d7cc5f893178506241b66cbf1596b1 Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:28:43 +0700
Subject: [PATCH 10/21] fix(studio): unify Advanced and Main PTP user intent,
 with explicit OFF canceling auto restart

---
 apps/arstack_studio/qml/PtpExpertPanel.qml | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/apps/arstack_studio/qml/PtpExpertPanel.qml b/apps/arstack_studio/qml/PtpExpertPanel.qml
index 14fb81763..8060e4176 100644
--- a/apps/arstack_studio/qml/PtpExpertPanel.qml
+++ b/apps/arstack_studio/qml/PtpExpertPanel.qml
@@ -49,6 +49,13 @@ SurfacePanel {
                 || panel.device.ptpRunning || panel.startPending || panel.session.updatingFirmware)
             return false
         const accepted = panel.session.requestStartPtpConfigured(role, panel.ptpProfile())
+        if (accepted && panel.controller) {
+            // A start from Advanced has exactly the same owner as Main.
+            panel.controller.ptpDesiredForSession = true
+            panel.controller.ptpExplicitOff = false
+            panel.controller.ptpDefaultStartPending = false
+            panel.controller.ptpDesiredRole = role
+        }
         if (!accepted && panel.controller)
             panel.controller.showMessage("PTP start blocked. Check timing diagnostics.", true)
         return Boolean(accepted)
@@ -134,7 +141,7 @@ SurfacePanel {
                         const wantsRunning = checked
                         checked = Qt.binding(function() { return Boolean(panel.device.ptpRunning) })
                         if (wantsRunning) panel.startSelectedMode()
-                        else if (panel.session && !panel.session.requestStopPtp() && panel.controller)
+                        else if (panel.controller && !panel.controller.requestStopPtp())
                             panel.controller.showMessage("PTP stop was not accepted. Copy diagnostics.", true)
                     }
                 }
@@ -287,7 +294,7 @@ SurfacePanel {
                     text: panel.device.ptpStatus.indexOf("PTP STOP unverified") === 0 ? "Retry Stop PTP" : "Stop PTP"
                     enabled: panel.session && (panel.device.ptpRunning || panel.startPending) && !panel.session.updatingFirmware
                     onClicked: {
-                        panel.session.requestStopPtp()
+                        if (panel.controller) panel.controller.requestStopPtp()
                     }
                 }
                 CalmButton {

From c72cf68b53f18884ad6c580c781a291a20360490 Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:29:50 +0700
Subject: [PATCH 11/21] =?UTF-8?q?test(studio):=20enforce=20exact=20?=
 =?UTF-8?q?=E2=88=9230/=E2=88=92150/+90=20degree=20injected=20SET=20wire?=
 =?UTF-8?q?=20angles?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../src/DeterministicSessionHarness.cpp               | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/apps/arstack_studio/src/DeterministicSessionHarness.cpp b/apps/arstack_studio/src/DeterministicSessionHarness.cpp
index bd5fe2233..299e770a9 100644
--- a/apps/arstack_studio/src/DeterministicSessionHarness.cpp
+++ b/apps/arstack_studio/src/DeterministicSessionHarness.cpp
@@ -644,6 +644,14 @@ class DeterministicSessionHarness final {
             QStringLiteral("Ib"), 1.0, -120.0, 0U, 1000.0, 100.0, 50.0);
         const QString ic = DeviceController::formatSignalCommand(
             QStringLiteral("Ic"), 1.0, 120.0, 0U, 1000.0, 100.0, 50.0);
+        // The operator's non-zero phasor settings must survive milli-degree
+        // wire encoding; never substitute the balanced 0/-120/+120 preset.
+        const QString iaShifted = DeviceController::formatSignalCommand(
+            QStringLiteral("Ia"), 1.0, -30.0, 0U, 1000.0, 100.0, 50.0);
+        const QString ibShifted = DeviceController::formatSignalCommand(
+            QStringLiteral("Ib"), 1.0, -150.0, 0U, 1000.0, 100.0, 50.0);
+        const QString icShifted = DeviceController::formatSignalCommand(
+            QStringLiteral("Ic"), 1.0, 90.0, 0U, 1000.0, 100.0, 50.0);
         const QString badId = DeviceController::formatSignalCommand(
             QStringLiteral("IX"), 1.0, 0.0, 0U, 1000.0, 100.0, 50.0);
         const QString overflow = DeviceController::formatSignalCommand(
@@ -653,6 +661,9 @@ class DeterministicSessionHarness final {
         return ia == QStringLiteral("SET IA 1000 0 0") &&
                ib == QStringLiteral("SET IB 1000 -120000 0") &&
                ic == QStringLiteral("SET IC 1000 120000 0") &&
+               iaShifted == QStringLiteral("SET IA 1000 -30000 0") &&
+               ibShifted == QStringLiteral("SET IB 1000 -150000 0") &&
+               icShifted == QStringLiteral("SET IC 1000 90000 0") &&
                badId.isEmpty() && overflow.isEmpty() &&
                dcNegative == QStringLiteral("SET IA -1000 0 0");
     }

From cd85669afcffd1dc8da34a9703748e0ad83fecf5 Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:30:46 +0700
Subject: [PATCH 12/21] test(studio): lock snapshot-on-every-START, default
 PTP, 4I/4V stacked UX and high-contrast hover

---
 .../tests/check_operator_workspace.py         | 46 ++++++++++++++++++-
 1 file changed, 44 insertions(+), 2 deletions(-)

diff --git a/apps/arstack_studio/tests/check_operator_workspace.py b/apps/arstack_studio/tests/check_operator_workspace.py
index ecca26e80..94154f5d9 100644
--- a/apps/arstack_studio/tests/check_operator_workspace.py
+++ b/apps/arstack_studio/tests/check_operator_workspace.py
@@ -115,8 +115,12 @@ def main() -> None:
             and 'enabled: !workflowBar.startQueued; onActivated: root.balanced()' in main_qml
             and 'enabled: !workflowBar.startQueued; onActivated: root.zeroAll()' in main_qml,
             "scenario editors and shortcuts must be frozen during a pending START snapshot")
+    start_path = workflow.split("function requestStart() {", 1)[1].split(
+        "function requestStop()", 1)[0]
     require("controller.pendingApply = true" in workflow
-            and "requestStartWithScenario(controller.startScenarioSnapshot())" in workflow
+            and "smartSession.requestStartWithScenario(" in start_path
+            and "controller.startScenarioSnapshot()" in start_path
+            and "smartSession.requestStart()" not in start_path
             and "controller.applyAllSignals()" not in workflow
             and "startWatchdog" in workflow and "onRunningChanged()" in workflow,
             "reconnect must not auto-transmit, but one-click Start must stage a bounded scenario")
@@ -145,7 +149,8 @@ def main() -> None:
             and 'toolTipText: "Advanced"' not in ribbon
             and 'ToolTip.text: "smpSynch mode"' not in timing_ui,
             "captioned operator controls must not duplicate labels as tooltips")
-    require('requestStartWithScenario(controller.startScenarioSnapshot())' in workflow
+    require("smartSession.requestStartWithScenario(" in start_path
+            and "controller.startScenarioSnapshot()" in start_path
             and "Apply to board" not in main_qml,
             "Edit-to-Start must not regress to a manual Apply-to-board action")
     require("assets/material/smv_injector.svg" in cmake_icons
@@ -156,6 +161,43 @@ def main() -> None:
             and "Equal magnitudes A/B/C" in matrix
             and "Balance angles · 120°" in matrix,
             "context actions must stay compact, descriptive and grouped")
+    # Freeze operator control geometry, hover contrast and table layout.
+    ribbon_action = source("RibbonAction.qml")
+    calm = source("CalmButton.qml")
+    check_box = source("StudioDarkCheckBox.qml")
+    combo = source("StudioDarkComboBox.qml")
+    require("Layout.minimumHeight: 408" in main_qml
+            and "ColumnLayout {\n                            Layout.fillWidth: true\n                            Layout.fillHeight: true" in main_qml
+            and "Layout.fillHeight: true" in matrix
+            and "Item { Layout.fillHeight: true }" not in matrix,
+            "4I and 4V must stack and expand, not leave unused lower area")
+    require("width: 40" in ribbon and "height: 40" in ribbon
+            and 'font.pixelSize: bar.compact ? 14 : 15' in ribbon
+            and "anchors.centerIn: parent" in ribbon_action,
+            "Studio identity and ribbon content must be legible and centered")
+    require('hovered ? "#e9f2fd"' in calm
+            and 'hovered ? "#142334"' in calm
+            and 'hovered && !parent.checked ? "#142334"' in config
+            and 'choice.highlighted ? "#142334"' in combo,
+            "Advanced hover must use light background with dark text")
+    require("background: Item {}" in check_box
+            and "implicitWidth: 18" in check_box
+            and "implicitHeight: 18" in check_box,
+            "checkbox must not draw a second native hover glyph")
+    require("property bool ptpDefaultStartPending: true" in main_qml
+            and 'root.startPtpRole("SOURCE")' in main_qml
+            and "root.ptpExplicitOff = true" in main_qml
+            and "root.ptpDefaultStartPending = false" in main_qml
+            and "panel.controller.requestStopPtp()" in expert,
+            "PTP defaults ON after verified connection while explicit OFF cancels restarts")
+    require("property bool phasorDockVisible: true" in main_qml
+            and "property bool waveformDockVisible: true" in main_qml
+            and "tray.session.requestSmpSynch(" in tray,
+            "phasor and waveform must default visible and keep AUTO sync selection")
+    require("const sent = phaseLink && row < 3" in main_qml
+            and "if (!sent) {" in main_qml
+            and "pendingApply = true" in main_qml,
+            "live SET rejection must never silently claim displayed setpoints were sent")
     assert "implicitHeight: 65" in source("RibbonAction.qml")
     assert 'hovered ? "#142334"' in source("RibbonAction.qml")
     require('title: ""' in menu and 'property string contextLabel: ""' in menu

From 5d7e3dace96d36dc78e8e3f5db5bbc1b9cd7cd27 Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:32:04 +0700
Subject: [PATCH 13/21] docs: lock good SV/PTP AUTO-LOCAL 120s evidence and
 operator UI regression baseline

---
 ...SMV_PTP_OPERATOR_BASELINE_NO_REGRESSION.md | 46 +++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 docs/SMV_PTP_OPERATOR_BASELINE_NO_REGRESSION.md

diff --git a/docs/SMV_PTP_OPERATOR_BASELINE_NO_REGRESSION.md b/docs/SMV_PTP_OPERATOR_BASELINE_NO_REGRESSION.md
new file mode 100644
index 000000000..19875fab6
--- /dev/null
+++ b/docs/SMV_PTP_OPERATOR_BASELINE_NO_REGRESSION.md
@@ -0,0 +1,46 @@
+# ARStack Studio — SMV/PTP non-regression baseline
+
+Physical checkpoint (2026-10-17, 120s ASIX/Npcap): 480,294 canonical VLAN
+priority-tagged SV frames, APPID 0x4000, svID ARSTACK_SV01,
+4000 nominal FPS with 0 smpCnt gaps, duplicates or reordering, 120
+counter wraps; 8 quality words/channel GOOD and AUTO smpSynch=1 LOCAL in
+all captured SV frames. Diagnostic mirror OFF. Domain-0 two-step PTP
+had 120 Announce, 120 Sync, 120 matched Follow_Up; SOURCE local clock
+class 248. Host-arrival correlation placed smpCnt=0 near integer PTP
+seconds with median +49 microseconds and stable relation for 120 epochs.
+
+That +49us is *not a measurement of hardware sample phase*; Npcap,
+Windows and USB Ethernet add variable latency. A real PTP subscription,
+peer-delay exchange, independent PPS and IED acceptance have not been
+certified. Never replace measured AUTO=1 with an unconditional forced
+flag; never automatically advertise globally traceable smpSynch=2.
+
+Mandatory anti-regression gates for every Studio release:
+
+1. Preserve tested M3C.6 SOURCE local AUTO qualification, phase tracking,
+   timestamp evidence, failure revocation and canonical 4000-FPS stream.
+   GUI-only fixes must not change the firmware protocol engine or PTP.
+2. Every operator START must atomically enqueue the *current displayed*
+   FREQ, eight channel SET/ENABLE commands, CT shape and then START.
+   Do not use a bare START on the basis of a cached pendingApply flag.
+   Fail on queue exhaustion; never report a rejected live edit as applied.
+3. End-to-end angle encoding at 1 A, scale 1000:
+   Ia -30 degrees => SET IA 1000 -30000 0
+   Ib -150 degrees => SET IB 1000 -150000 0
+   Ic +90 degrees => SET IC 1000 90000 0.
+   Do not silently replace with default 0/-120/+120 degree pattern.
+4. Default PTP SOURCE ON only once a verified ESP32-P4 is ready;
+   smpSynch AUTO; user explicit OFF cancels any automatic restart.
+   Phasor and Wave docks visible by default.
+5. Voltage above Current, with both tables occupying the editor height.
+   Shared buttons have centered content, light hover with dark captions,
+   and a single unchanged-size checkbox indicator when hovered.
+6. Windows Native Preview must package firmware from the **same commit**
+   with phase servo ON, canonical hardware MAC TX timestamp evidence ON,
+   and diagnostic mirror OFF. Reject outdated firmware bundles.
+7. CI: PTP Core GCC/Clang/MSVC, ESP32-P4 SV+PTP SOURCE/RECEIVER,
+   Studio Qt/operator workspace contracts, Windows Lifecycle and Native
+   Preview must all pass before any public merge/release candidate.
+
+This baseline documents the best known functioning stream, not third-party
+subscriber certification or independent microsecond hardware accuracy.

From 7f4bd26c4d9d19f509146c15f5dbaf33e6aca8b5 Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:36:26 +0700
Subject: [PATCH 14/21] fix(studio): never hide unsent phasor/frequency/quality
 changes while injecting

---
 apps/arstack_studio/qml/Main.qml | 27 ++++++++++++++++-----------
 1 file changed, 16 insertions(+), 11 deletions(-)

diff --git a/apps/arstack_studio/qml/Main.qml b/apps/arstack_studio/qml/Main.qml
index b5a5b87f1..f29c7143c 100644
--- a/apps/arstack_studio/qml/Main.qml
+++ b/apps/arstack_studio/qml/Main.qml
@@ -54,7 +54,8 @@ ApplicationWindow {
         saveScenarioTimer.restart()
         // While STOPPED, a new edit belongs to the next supervised Start batch.
         // Only a genuinely RUNNING board receives incremental live SETs.
-        if (!workflowBar.injectionRunning)
+        if (!workflowBar.injectionRunning ||
+                !workflowBar.session || !workflowBar.session.liveControlReady)
             pendingApply = true
     }
     function restoreLocalScenario() {
@@ -536,8 +537,9 @@ ApplicationWindow {
         frequencyField.invalidInput = false
         refreshPreview()
         markScenarioDirty()
-        if (workflowBar.session && workflowBar.session.liveControlReady && !pendingApply)
-            workflowBar.session.requestSetFrequency(value)
+        if (workflowBar.session && workflowBar.session.liveControlReady && !pendingApply &&
+                !workflowBar.session.requestSetFrequency(value))
+            pendingApply = true
         return true
     }
 
@@ -643,8 +645,9 @@ ApplicationWindow {
         selectSignal(activeGroup, activeRow)
         refreshPreview()
         markScenarioDirty()
-        if (workflowBar.session && workflowBar.session.liveControlReady && !pendingApply)
-            workflowBar.session.requestZero()
+        if (workflowBar.session && workflowBar.session.liveControlReady && !pendingApply &&
+                !workflowBar.session.requestZero())
+            pendingApply = true
     }
 
     function setActiveQuality(value) {
@@ -652,8 +655,9 @@ ApplicationWindow {
         groupModel(activeGroup).setProperty(activeRow, "quality", unsignedValue)
         activeQuality = unsignedValue
         markScenarioDirty()
-        if (workflowBar.session && workflowBar.session.liveControlReady && !pendingApply)
-            workflowBar.session.requestSetQuality(activeSignal, unsignedValue)
+        if (workflowBar.session && workflowBar.session.liveControlReady && !pendingApply &&
+                !workflowBar.session.requestSetQuality(activeSignal, unsignedValue))
+            pendingApply = true
     }
 
     Shortcut { sequence: "Ctrl+B"; enabled: !workflowBar.startQueued; onActivated: root.balanced() }
@@ -731,11 +735,12 @@ ApplicationWindow {
             }
             Rectangle { width: 1; height: 12; color: studioTheme.lineSoft }
             Label {
-                text: root.pendingApply && !workflowBar.injectionRunning
-                    ? "4I + 4V · Changes sent on Start"
+                text: root.pendingApply
+                    ? (workflowBar.injectionRunning
+                        ? "4I + 4V · Changes pending · restart to apply"
+                        : "4I + 4V · Changes sent on Start")
                     : "4I + 4V · 4000 samples/s"
-                color: root.pendingApply && !workflowBar.injectionRunning
-                    ? studioTheme.amber : studioTheme.muted
+                color: root.pendingApply ? studioTheme.amber : studioTheme.muted
                 font.family: root.uiFont
                 font.pixelSize: 9
             }

From 620ff150840e2e362a7f57c791d08ca97557430a Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:36:44 +0700
Subject: [PATCH 15/21] test(studio): catch silent live-setpoint failures and
 show pending state during injection

---
 apps/arstack_studio/tests/check_operator_workspace.py | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/apps/arstack_studio/tests/check_operator_workspace.py b/apps/arstack_studio/tests/check_operator_workspace.py
index 94154f5d9..80163d780 100644
--- a/apps/arstack_studio/tests/check_operator_workspace.py
+++ b/apps/arstack_studio/tests/check_operator_workspace.py
@@ -34,8 +34,9 @@ def main() -> None:
             and "Signals, firmware, PTP and device settings" in config,
             "Advanced must not imply this is only a simulated lab tool")
     require("Changes sent on Start" in main_qml
-            and "root.pendingApply && !workflowBar.injectionRunning" in main_qml,
-            "STOPPED waveform edits must distinguish draft from sent setpoints")
+            and "Changes pending · restart to apply" in main_qml
+            and "root.pendingApply ? studioTheme.amber" in main_qml,
+            "show draft edits distinctly from sent setpoints, even while injecting")
     controller = (STUDIO / "src/DeviceController.cpp").read_text(encoding="utf-8")
     require("logUpdateTimer_.setInterval(100)" in controller
             and "if (!logUpdateTimer_.isActive()) logUpdateTimer_.start();" in controller,
@@ -194,6 +195,11 @@ def main() -> None:
             and "property bool waveformDockVisible: true" in main_qml
             and "tray.session.requestSmpSynch(" in tray,
             "phasor and waveform must default visible and keep AUTO sync selection")
+    require("!workflowBar.session.liveControlReady" in main_qml
+            and "!workflowBar.session.requestSetFrequency(value)" in main_qml
+            and "!workflowBar.session.requestZero()" in main_qml
+            and "!workflowBar.session.requestSetQuality(activeSignal, unsignedValue)" in main_qml,
+            "unavailable or rejected live updates must be marked pending")
     require("const sent = phaseLink && row < 3" in main_qml
             and "if (!sent) {" in main_qml
             and "pendingApply = true" in main_qml,

From 5c2b72e80d2adb908b73fe702fb0a93032711d64 Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:44:50 +0700
Subject: [PATCH 16/21] =?UTF-8?q?test(studio):=20enforce=20vertical=20Volt?=
 =?UTF-8?q?age=20over=20Current=20and=20no=20overlap=20at=20Windows=20100?=
 =?UTF-8?q?=E2=80=93175%=20DPI?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 apps/arstack_studio/src/main.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/apps/arstack_studio/src/main.cpp b/apps/arstack_studio/src/main.cpp
index 13518af84..595849292 100644
--- a/apps/arstack_studio/src/main.cpp
+++ b/apps/arstack_studio/src/main.cpp
@@ -82,8 +82,13 @@ struct UiBounds {
             return false;
         }
     }
-    if (!(voltage.area.right() <= current.area.left() + tolerance
-          && tray.area.top() >= voltage.area.bottom() - tolerance
+    // Voltage and Current intentionally stack vertically. The native
+    // geometry test must detect clipping/overlap in the NEW layout, rather
+    // than assert the obsolete side-by-side relationship.
+    if (!(voltage.area.bottom() <= current.area.top() + tolerance
+          && std::abs(voltage.area.left() - current.area.left()) <= tolerance
+          && std::abs(voltage.area.right() - current.area.right()) <= tolerance
+          && tray.area.top() >= current.area.bottom() - tolerance
           && quality.area.top() >= tray.area.bottom() - tolerance
           && quality.area.bottom() <= surface.area.bottom() + tolerance)) {
         qCritical().noquote() << "Studio UI panel order/overlap violation" << size

From 651076a6c059e32234131871bad6674f35175d2b Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:45:07 +0700
Subject: [PATCH 17/21] build(studio): explicitly include cmath for DPI-aligned
 geometric tolerance

---
 apps/arstack_studio/src/main.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/apps/arstack_studio/src/main.cpp b/apps/arstack_studio/src/main.cpp
index 595849292..02257db7d 100644
--- a/apps/arstack_studio/src/main.cpp
+++ b/apps/arstack_studio/src/main.cpp
@@ -30,6 +30,7 @@
 
 #include <algorithm>
 #include <array>
+#include <cmath>
 #include <memory>
 #include <string_view>
 

From b4337c64b58cb5d9de137c549bc999d74c57aeea Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:47:08 +0700
Subject: [PATCH 18/21] fix(studio): scroll vertically at minimum window size
 without clipping stacked 4I/4V controls

---
 apps/arstack_studio/qml/Main.qml | 28 +++++++++++++++++++++++++---
 1 file changed, 25 insertions(+), 3 deletions(-)

diff --git a/apps/arstack_studio/qml/Main.qml b/apps/arstack_studio/qml/Main.qml
index f29c7143c..098ad49d6 100644
--- a/apps/arstack_studio/qml/Main.qml
+++ b/apps/arstack_studio/qml/Main.qml
@@ -968,10 +968,31 @@ ApplicationWindow {
                     SplitView.preferredWidth: root.compactLayout ? 700 : 860
                     theme: studioTheme
 
-                    ColumnLayout {
+                    // A narrow Windows viewport cannot display two full
+                    // engineering tables plus timing/quality at once. Scroll
+                    // the injection editor as ONE surface at small heights;
+                    // normal desktop sizes fully expand the two matrices.
+                    ScrollView {
+                        id: injectionScroll
+                        objectName: "studioInjectionScroll"
                         anchors.fill: parent
-                        anchors.margins: root.compactLayout ? 8 : 9
-                        spacing: root.compactLayout ? 4 : 5
+                        clip: true
+                        ScrollBar.horizontal.policy: ScrollBar.AlwaysOff
+                        ScrollBar.vertical.policy: ScrollBar.AsNeeded
+                        contentWidth: availableWidth
+                        contentHeight: injectionEditor.y + injectionEditor.height
+                            + (root.compactLayout ? 8 : 9)
+
+                        ColumnLayout {
+                            id: injectionEditor
+                            x: root.compactLayout ? 8 : 9
+                            y: root.compactLayout ? 8 : 9
+                            width: Math.max(1, injectionScroll.availableWidth -
+                                2 * (root.compactLayout ? 8 : 9))
+                            height: Math.max(implicitHeight,
+                                injectionScroll.availableHeight -
+                                2 * (root.compactLayout ? 8 : 9))
+                            spacing: root.compactLayout ? 4 : 5
 
                         RowLayout {
                             Layout.fillWidth: true
@@ -1178,6 +1199,7 @@ ApplicationWindow {
                                 compact: root.compactLayout
                             }
                         }
+                        }
                     }
                 }
 

From 5dbc4995f77728370043b3e7245079fcc6da8d27 Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:47:33 +0700
Subject: [PATCH 19/21] test(studio): validate scrollable minimum viewport and
 full desktop vertical matrix geometry

---
 apps/arstack_studio/src/main.cpp | 24 +++++++++++++++++++++---
 1 file changed, 21 insertions(+), 3 deletions(-)

diff --git a/apps/arstack_studio/src/main.cpp b/apps/arstack_studio/src/main.cpp
index 02257db7d..09203b4b7 100644
--- a/apps/arstack_studio/src/main.cpp
+++ b/apps/arstack_studio/src/main.cpp
@@ -73,11 +73,21 @@ struct UiBounds {
         {"voltage matrix", voltage}, {"current matrix", current},
         {"PTP timing tray", tray}, {"quality editor", quality}
     }};
+    // At the supported 960x620 minimum viewport the editor uses a
+    // vertical ScrollView; offscreen lower controls must remain laid out
+    // correctly and reachable by scrolling, not be smashed to <30px rows.
+    // Full desktop views MUST still show all controls without clipping.
+    const bool compactScroll = size.height() < 700;
     for (const auto& [label, item] : areas) {
+        const bool mustBeInViewport = !compactScroll ||
+            std::string_view{label} == "toolbar" ||
+            std::string_view{label} == "injection workspace" ||
+            std::string_view{label} == "voltage matrix";
         if (!item.visible || item.area.width() < 25 || item.area.height() < 15 ||
-            !viewport.adjusted(-tolerance, -tolerance, tolerance, tolerance)
-                 .contains(item.area.adjusted(tolerance, tolerance,
-                                              -tolerance, -tolerance))) {
+            (mustBeInViewport &&
+             !viewport.adjusted(-tolerance, -tolerance, tolerance, tolerance)
+                  .contains(item.area.adjusted(tolerance, tolerance,
+                                               -tolerance, -tolerance)))) {
             qCritical().noquote() << "Studio UI viewport violation" << size << label
                                   << "bounds=" << item.area << "viewport=" << viewport;
             return false;
@@ -86,6 +96,14 @@ struct UiBounds {
     // Voltage and Current intentionally stack vertically. The native
     // geometry test must detect clipping/overlap in the NEW layout, rather
     // than assert the obsolete side-by-side relationship.
+    const auto scroll = findUiBounds(window, "studioInjectionScroll");
+    if (!scroll.visible ||
+        !surface.area.adjusted(-tolerance, -tolerance, tolerance, tolerance)
+             .contains(scroll.area.adjusted(tolerance, tolerance, -tolerance, -tolerance))) {
+        qCritical().noquote() << "Studio operator scrolling surface missing" << size
+                              << scroll.area << surface.area;
+        return false;
+    }
     if (!(voltage.area.bottom() <= current.area.top() + tolerance
           && std::abs(voltage.area.left() - current.area.left()) <= tolerance
           && std::abs(voltage.area.right() - current.area.right()) <= tolerance

From db7558d77fe29c639e6a2f3a68d837a3c7e6fee7 Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:48:15 +0700
Subject: [PATCH 20/21] test(studio): enforce vertical matrix scroll at
 supported 960x620 window

---
 apps/arstack_studio/tests/check_operator_workspace.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/apps/arstack_studio/tests/check_operator_workspace.py b/apps/arstack_studio/tests/check_operator_workspace.py
index 80163d780..49e9d235c 100644
--- a/apps/arstack_studio/tests/check_operator_workspace.py
+++ b/apps/arstack_studio/tests/check_operator_workspace.py
@@ -168,10 +168,12 @@ def main() -> None:
     check_box = source("StudioDarkCheckBox.qml")
     combo = source("StudioDarkComboBox.qml")
     require("Layout.minimumHeight: 408" in main_qml
-            and "ColumnLayout {\n                            Layout.fillWidth: true\n                            Layout.fillHeight: true" in main_qml
+            and 'objectName: "studioInjectionScroll"' in main_qml
+            and "id: injectionEditor" in main_qml
+            and "contentHeight: injectionEditor.y + injectionEditor.height" in main_qml
             and "Layout.fillHeight: true" in matrix
             and "Item { Layout.fillHeight: true }" not in matrix,
-            "4I and 4V must stack and expand, not leave unused lower area")
+            "4I and 4V must stack, expand, and scroll rather than clip at minimum size")
     require("width: 40" in ribbon and "height: 40" in ribbon
             and 'font.pixelSize: bar.compact ? 14 : 15' in ribbon
             and "anchors.centerIn: parent" in ribbon_action,

From d02bb037790942dbe2215ae7ca10eb0c9f8ee6aa Mon Sep 17 00:00:00 2001
From: Ari Sulistiono <ari.sulistiono@gmail.com>
Date: Sun, 18 Oct 2026 05:48:39 +0700
Subject: [PATCH 21/21] test(studio): allow quality editor below fold only when
 minimum-height viewport scrolls

---
 apps/arstack_studio/src/main.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/apps/arstack_studio/src/main.cpp b/apps/arstack_studio/src/main.cpp
index 09203b4b7..a605c19cd 100644
--- a/apps/arstack_studio/src/main.cpp
+++ b/apps/arstack_studio/src/main.cpp
@@ -109,7 +109,8 @@ struct UiBounds {
           && std::abs(voltage.area.right() - current.area.right()) <= tolerance
           && tray.area.top() >= current.area.bottom() - tolerance
           && quality.area.top() >= tray.area.bottom() - tolerance
-          && quality.area.bottom() <= surface.area.bottom() + tolerance)) {
+          && (compactScroll ||
+              quality.area.bottom() <= surface.area.bottom() + tolerance))) {
         qCritical().noquote() << "Studio UI panel order/overlap violation" << size
                               << voltage.area << current.area << tray.area << quality.area;
         return false;