style: correct translation header and footer layout

Sources/Conjure/LauncherWindowController.swift

@@ -4,6 +4,8 @@ import ConjureKit
 @MainActor
 final class LauncherWindowController: NSWindowController, NSWindowDelegate, NSSearchFieldDelegate, NSTableViewDataSource, NSTableViewDelegate {
     private let searchField = NSSearchField()
+    private let searchSymbol = IconView(font: .systemFont(ofSize: 20))
+    private let translationBack = NSButton(title: "", target: nil, action: nil)
     private let tableView = ApplicationTableView()
     private let statusLabel = NSTextField(labelWithString: "Finding applications…")
     private let emptyLabel = NSTextField(labelWithString: "Finding applications…")
@@ -226,10 +228,20 @@ final class LauncherWindowController: NSWindowController, NSWindowDelegate, NSSe
         searchField.delegate = self
         searchField.setAccessibilityLabel("Search applications, calculate, or convert units and currencies")
 
-        let symbol = IconView(font: searchFont)
-        symbol.image = NSImage(systemSymbolName: "sparkles", accessibilityDescription: nil)
-        symbol.contentTintColor = SunsetPalette.accent
-        let header = NSStackView(views: [symbol, searchField])
+        searchSymbol.image = NSImage(systemSymbolName: "sparkles", accessibilityDescription: nil)
+        searchSymbol.contentTintColor = SunsetPalette.accent
+        translationBack.image = IconStyle.symbol("chevron.left", for: searchFont)
+        translationBack.imageScaling = .scaleProportionallyDown
+        translationBack.isBordered = false
+        translationBack.contentTintColor = SunsetPalette.secondaryText
+        translationBack.setAccessibilityLabel("Back to applications")
+        translationBack.toolTip = "Back to applications (Escape)"
+        translationBack.isHidden = true
+        NSLayoutConstraint.activate([
+            translationBack.widthAnchor.constraint(equalToConstant: IconStyle.applicationSize(for: searchFont)),
+            translationBack.heightAnchor.constraint(equalToConstant: IconStyle.applicationSize(for: searchFont)),
+        ])
+        let header = NSStackView(views: [searchSymbol, translationBack, searchField])
         header.orientation = .horizontal
         header.alignment = .centerY
         header.spacing = 12
@@ -780,6 +792,9 @@ final class LauncherWindowController: NSWindowController, NSWindowDelegate, NSSe
             guard let self, let controller else { return }
             controller.view.removeFromSuperview()
             self.translation = nil
+            self.translationBack.isHidden = true
+            self.translationBack.target = nil
+            self.searchSymbol.isHidden = false
             for view in self.launcherViews.dropFirst() {
                 view.isHidden = false
                 view.setAccessibilityHidden(false)
@@ -795,6 +810,10 @@ final class LauncherWindowController: NSWindowController, NSWindowDelegate, NSSe
         actions.close()
         (window as? LauncherPanel)?.resetNumberHints()
         openButton.keyEquivalent = ""
+        searchSymbol.isHidden = true
+        translationBack.target = controller
+        translationBack.action = #selector(TranslationController.goBack)
+        translationBack.isHidden = false
         searchField.stringValue = ""
         searchField.placeholderAttributedString = NSAttributedString(
             string: "Enter English text to translate…",