fix: optically center shortcut glyphs and tighten badge gaps

Sources/Conjure/LauncherWindowController.swift

@@ -1,5 +1,6 @@
 import AppKit
 import ConjureKit
+import CoreText
 
 @MainActor
 final class LauncherWindowController: NSWindowController, NSWindowDelegate, NSSearchFieldDelegate, NSTableViewDataSource, NSTableViewDelegate {
@@ -321,7 +322,7 @@ final class LauncherWindowController: NSWindowController, NSWindowDelegate, NSSe
             actionsButton.leadingAnchor.constraint(equalTo: returnKey.trailingAnchor, constant: 14),
             commandKey.leadingAnchor.constraint(equalTo: actionsButton.trailingAnchor, constant: 8),
             commandKey.centerYAnchor.constraint(equalTo: actionPill.centerYAnchor),
-            kKey.leadingAnchor.constraint(equalTo: commandKey.trailingAnchor, constant: 8),
+            kKey.leadingAnchor.constraint(equalTo: commandKey.trailingAnchor, constant: 4),
             kKey.centerYAnchor.constraint(equalTo: actionPill.centerYAnchor),
             kKey.trailingAnchor.constraint(equalTo: actionPill.trailingAnchor, constant: -12),
             actionsButton.centerYAnchor.constraint(equalTo: actionPill.centerYAnchor),
@@ -724,22 +725,20 @@ func shortcutBadge(_ title: String) -> NSTextField {
 
 @MainActor
 private final class ShortcutBadge: NSTextField {
-    override class var cellClass: AnyClass? {
-        get { ShortcutBadgeCell.self }
-        set { super.cellClass = newValue }
-    }
-
     // NSTextField's horizontal alignment insets otherwise make an 18-point badge 22 points wide.
     override var alignmentRectInsets: NSEdgeInsets { NSEdgeInsets(top: 0, left: 0, bottom: 0, right: 0) }
-}
 
-@MainActor
-private final class ShortcutBadgeCell: NSTextFieldCell {
-    override func drawingRect(forBounds rect: NSRect) -> NSRect {
-        var textRect = super.drawingRect(forBounds: rect)
-        let textHeight = cellSize(forBounds: rect).height
-        textRect.origin.y += (textRect.height - textHeight) / 2
-        textRect.size.height = textHeight
-        return textRect
+    override func draw(_ dirtyRect: NSRect) {
+        guard let context = NSGraphicsContext.current?.cgContext else { return }
+        let line = CTLineCreateWithAttributedString(attributedStringValue)
+        let ink = CTLineGetBoundsWithOptions(line, .useGlyphPathBounds)
+        context.saveGState()
+        context.textMatrix = .identity
+        // Center visible ink, not the font's asymmetric ascender/descender line box.
+        context.translateBy(x: bounds.midX - ink.midX, y: bounds.midY + ink.midY)
+        context.scaleBy(x: 1, y: -1)
+        context.textPosition = .zero
+        CTLineDraw(line, context)
+        context.restoreGState()
     }
 }