Redesign shell theme from Material Design to Neovim TUI style (#60)

Transform the Quickshell desktop shell from a GNOME-like Material Design
3
interface to a Neovim/LazyVim-inspired TUI aesthetic:

- Replace MD3 surface layer tinting with flat Tokyo Night colors
- Change from rounded corners to sharp/minimal TUI-style borders
- Add lualine-inspired status bar with mode indicator and segmented
sections
- Create TuiPanel component for vim-style floating windows with title
bars
- Add which-key style keyboard hint bars to sidebars and switcher
- Redesign ApplicationView with vim-style line numbers, command-line
search
- Update OSD to minimal TUI style with mode badges
- Restyle notifications with vim-style bracketed labels
- Add vim keybindings (j/k/h/l) to app switcher
- Use monospace font throughout for consistent TUI look

---------

Co-authored-by: Claude <noreply@anthropic.com>

Author: binarypie

dot_files/quickshell/modules/bar/StatusBar.qml

@@ -0,0 +1,134 @@
+import QtQuick
+import QtQuick.Layouts
+
+// Vim-style floating panel with TUI borders and title bar
+Rectangle {
+    id: root
+
+    // Panel title (displayed in title bar, vim-style)
+    property string title: ""
+
+    // Keyboard hints shown at bottom
+    property var keyHints: []  // Array of {key: "Esc", action: "close"}
+
+    // Content item
+    default property alias content: contentContainer.data
+
+    // Colors
+    color: Qt.rgba(
+        Appearance.colors.bg.r,
+        Appearance.colors.bg.g,
+        Appearance.colors.bg.b,
+        Appearance.panelOpacity
+    )
+
+    // TUI-style border
+    border.width: Appearance.borderWidth.thin
+    border.color: Appearance.colors.border
+
+    // Match Hyprland window rounding
+    radius: Appearance.rounding.window
+
+    // Layout
+    ColumnLayout {
+        anchors.fill: parent
+        spacing: 0
+
+        // Title bar (vim-style)
+        Rectangle {
+            Layout.fillWidth: true
+            Layout.preferredHeight: root.title !== "" ? 24 : 0
+            visible: root.title !== ""
+            color: Appearance.colors.bgHighlight
+
+            // Bottom border
+            Rectangle {
+                anchors.left: parent.left
+                anchors.right: parent.right
+                anchors.bottom: parent.bottom
+                height: 1
+                color: Appearance.colors.border
+            }
+
+            // Title text (centered, vim-style)
+            Text {
+                anchors.centerIn: parent
+                text: root.title
+                font.family: Appearance.fonts.mono
+                font.pixelSize: Appearance.fontSize.small
+                font.bold: true
+                color: Appearance.colors.fg
+            }
+        }
+
+        // Content area
+        Item {
+            id: contentContainer
+            Layout.fillWidth: true
+            Layout.fillHeight: true
+            Layout.margins: Appearance.spacing.medium
+        }
+
+        // Keyboard hints bar (like which-key)
+        Rectangle {
+            Layout.fillWidth: true
+            Layout.preferredHeight: root.keyHints.length > 0 ? 22 : 0
+            visible: root.keyHints.length > 0
+            color: Appearance.colors.bgDark
+
+            // Top border
+            Rectangle {
+                anchors.left: parent.left
+                anchors.right: parent.right
+                anchors.top: parent.top
+                height: 1
+                color: Appearance.colors.border
+            }
+
+            RowLayout {
+                anchors.fill: parent
+                anchors.leftMargin: Appearance.spacing.medium
+                anchors.rightMargin: Appearance.spacing.medium
+                spacing: Appearance.spacing.large
+
+                Repeater {
+                    model: root.keyHints
+
+                    Row {
+                        spacing: Appearance.spacing.tiny
+
+                        // Key badge
+                        Rectangle {
+                            width: keyText.implicitWidth + Appearance.spacing.small * 2
+                            height: 16
+                            radius: Appearance.rounding.tiny
+                            color: Appearance.colors.bgVisual
+                            anchors.verticalCenter: parent.verticalCenter
+
+                            Text {
+                                id: keyText
+                                anchors.centerIn: parent
+                                text: modelData.key
+                                font.family: Appearance.fonts.mono
+                                font.pixelSize: Appearance.fontSize.tiny
+                                font.bold: true
+                                color: Appearance.colors.cyan
+                            }
+                        }
+
+                        // Action text
+                        Text {
+                            anchors.verticalCenter: parent.verticalCenter
+                            text: modelData.action
+                            font.family: Appearance.fonts.mono
+                            font.pixelSize: Appearance.fontSize.tiny
+                            color: Appearance.colors.fgDark
+                        }
+                    }
+                }
+
+                Item { Layout.fillWidth: true }
+            }
+        }
+    }
+}

dot_files/quickshell/modules/common/Appearance.qml

@@ -6,3 +6,4 @@ singleton Directories 1.0 Directories.qml
 singleton Icons 1.0 Icons.qml
 ClickCatcher 1.0 ClickCatcher.qml
 Icon 1.0 Icon.qml
+TuiPanel 1.0 TuiPanel.qml