feat(nosignal): NoSignal logo + V1 on About; fully square the UI

- About page: replace caelestia AnimatedLogo with the NoSignal logo
  (assets/nosignal-logo.png), title "NoSignal", version reads "V1".
- Square every remaining curved element to match the no-curves design:
  avatars, toggle/icon circles, power/media buttons, slider tracks+handles,
  NsSwitch track+knob, notification dot, calendar today, lock avatar -> radius 0.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

components/NsSwitch.qml

@@ -13,7 +13,7 @@ Rectangle {
 
     implicitWidth: 38
     implicitHeight: 22
-    radius: 11
+    radius: 0
     color: on ? Theme.accent : Theme.fillSubtle
 
     Behavior on color {
@@ -27,7 +27,7 @@ Rectangle {
         anchors.verticalCenter: parent.verticalCenter
         implicitWidth: 16
         implicitHeight: 16
-        radius: 8
+        radius: 0
         color: root.on ? Theme.onAccent : Theme.text
 
         Behavior on x {

modules/lock/LockSurface.qml

@@ -157,7 +157,7 @@ WlSessionLockSurface {
             Layout.topMargin: 64
             implicitWidth: 74
             implicitHeight: 74
-            radius: 37
+            radius: 0
             gradient: Gradient {
                 orientation: Gradient.Vertical
                 GradientStop {

modules/nexus/pages/AboutPage.qml

@@ -1,5 +1,6 @@
 import QtQuick
 import QtQuick.Layouts
+import Quickshell
 import Quickshell.Io
 import Caelestia
 import Caelestia.Config
@@ -61,22 +62,27 @@ PageBase {
                 width: parent.width - Tokens.padding.largeIncreased * 2
                 spacing: Tokens.spacing.small
 
-                AnimatedLogo {
+                Image {
                     Layout.alignment: Qt.AlignHCenter
-                    Layout.preferredWidth: implicitWidth
+                    Layout.preferredWidth: 104
-                    Layout.preferredHeight: implicitHeight
+                    Layout.preferredHeight: 104
+                    source: Quickshell.shellDir + "/assets/nosignal-logo.png"
+                    sourceSize.width: 208
+                    sourceSize.height: 208
+                    fillMode: Image.PreserveAspectFit
+                    smooth: true
                 }
 
                 StyledText {
                     Layout.alignment: Qt.AlignHCenter
                     Layout.topMargin: Tokens.spacing.small
-                    text: "Caelestia"
+                    text: "NoSignal"
                     font: Tokens.font.headline.builders.large.width(110).build()
                 }
 
                 StyledText {
                     Layout.alignment: Qt.AlignHCenter
-                    text: CUtils.version ? `v${CUtils.version}` : "…"
+                    text: "V1"
                     color: Colours.palette.m3onSurfaceVariant
                     font: Tokens.font.body.medium
                 }

modules/nsbar/NsBar.qml

@@ -164,7 +164,7 @@ Variants {
                         anchors.topMargin: 1
                         implicitWidth: 6
                         implicitHeight: 6
-                        radius: 3
+                        radius: 0
                         color: Theme.accent
                     }
                 }

modules/nsbar/panels/NsAudio.qml

@@ -122,13 +122,13 @@ NsPanel {
             Rectangle {
                 Layout.fillWidth: true
                 implicitHeight: 6
-                radius: 3
+                radius: 0
                 color: Theme.fillSubtle
 
                 Rectangle {
                     width: parent.width * Math.max(0, Math.min(1, s.value))
                     height: parent.height
-                    radius: 3
+                    radius: 0
                     color: Theme.accent
                 }
 
@@ -137,7 +137,7 @@ NsPanel {
                     anchors.verticalCenter: parent.verticalCenter
                     implicitWidth: 14
                     implicitHeight: 14
-                    radius: 7
+                    radius: 0
                     color: Theme.accent
                 }
 

modules/nsbar/panels/NsCalendar.qml

@@ -109,7 +109,7 @@ NsPanel {
                     visible: parent.modelData > 0
                     implicitWidth: 26
                     implicitHeight: 26
-                    radius: 13
+                    radius: 0
                     color: parent.today ? Theme.accent : "transparent"
 
                     StyledText {

modules/nsbar/panels/NsNotifications.qml

@@ -40,7 +40,7 @@ NsPanel {
         Rectangle {
             implicitWidth: 26
             implicitHeight: 26
-            radius: 13
+            radius: 0
             color: Notifs.dnd ? Theme.accentSoft : dndMa.containsMouse ? Theme.hover : "transparent"
 
             NsIcon {

modules/nsbar/panels/NsQuickSettings.qml

@@ -28,7 +28,7 @@ NsPanel {
         Rectangle {
             implicitWidth: 40
             implicitHeight: 40
-            radius: 20
+            radius: 0
             gradient: Gradient {
                 orientation: Gradient.Vertical
                 GradientStop {
@@ -75,7 +75,7 @@ NsPanel {
         Rectangle {
             implicitWidth: 34
             implicitHeight: 34
-            radius: 17
+            radius: 0
             color: pwrMa.containsMouse ? Theme.accentSoft : Theme.fillSubtle
 
             NsIcon {
@@ -264,7 +264,7 @@ NsPanel {
             Rectangle {
                 implicitWidth: 30
                 implicitHeight: 30
-                radius: 15
+                radius: 0
                 color: tile.on ? Theme.accent : Qt.rgba(1, 1, 1, 0.06)
 
                 NsIcon {
@@ -319,13 +319,13 @@ NsPanel {
 
             Layout.fillWidth: true
             implicitHeight: 6
-            radius: 3
+            radius: 0
             color: Theme.fillSubtle
 
             Rectangle {
                 width: parent.width * Math.max(0, Math.min(1, s.value))
                 height: parent.height
-                radius: 3
+                radius: 0
                 color: Theme.accent
             }
 
@@ -334,7 +334,7 @@ NsPanel {
                 anchors.verticalCenter: parent.verticalCenter
                 implicitWidth: 14
                 implicitHeight: 14
-                radius: 7
+                radius: 0
                 color: Theme.accent
             }
 
@@ -362,7 +362,7 @@ NsPanel {
 
         implicitWidth: 28
         implicitHeight: 28
-        radius: 14
+        radius: 0
         color: mbm.containsMouse ? Theme.hover : "transparent"
 
         NsIcon {