style: use moon emoji for system theme command

README.md

@@ -126,7 +126,7 @@ The picker works offline with 1,870 emoji from [gemoji v4.1.0](https://github.co
 
 ## System theme
 
-Search for **Toggle System Theme** (try `theme` or `system`) and press Return to switch macOS from light to dark appearance or back. Selecting it in the launcher dismisses Conjure on success. Its global shortcut runs in the background without presenting a window or changing the current launcher view. You can favorite it or assign a shortcut in Settings; existing theme keybindings and favorites survive the rename.
+Search for **Toggle System Theme**, identified by its centered 🌗 icon (try `theme` or `system`), and press Return to switch macOS from light to dark appearance or back. Selecting it in the launcher dismisses Conjure on success. Its global shortcut runs in the background without presenting a window or changing the current launcher view. You can favorite it or assign a shortcut in Settings; existing theme keybindings and favorites survive the rename.
 
 The first use may ask permission to control **System Events**. Allow it under **System Settings → Privacy & Security → Automation → Conjure**. If permission is denied or macOS reports an error, Conjure shows the failure in the visible launcher or a standalone alert when the launcher is hidden. Conjure's own launcher keeps its existing dark styling.
 

Sources/Conjure/LauncherWindowController.swift

@@ -45,6 +45,7 @@ final class LauncherWindowController: NSWindowController, NSWindowDelegate, NSSe
     private static let emojiIcon = makeEmojiIcon("🤔")
     private static let notesIcon = makeEmojiIcon("📔")
     private static let translateIcon = makeEmojiIcon("🌏")
+    private static let themeIcon = makeEmojiIcon("🌗")
 
     private static func makeEmojiIcon(_ emoji: String) -> NSImage {
         let text = NSAttributedString(string: emoji, attributes: [.font: NSFont.systemFont(ofSize: 28)])
@@ -566,13 +567,13 @@ final class LauncherWindowController: NSWindowController, NSWindowDelegate, NSSe
                 cell.imageView?.image = Self.notesIcon
                 cell.toolTip = "Write notes with Markdown and images"
             case .toggleTheme:
-                cell.imageView?.image = NSImage(systemSymbolName: "circle.lefthalf.filled", accessibilityDescription: nil)
+                cell.imageView?.image = Self.themeIcon
                 cell.toolTip = "Switch macOS between light and dark appearance"
             default:
                 cell.imageView?.image = Self.translateIcon
                 cell.toolTip = "Translate English to Japanese"
             }
-            cell.imageView?.contentTintColor = entry.command == .toggleTheme ? SunsetPalette.accent : nil
+            cell.imageView?.contentTintColor = nil
         } else {
             let application = results[row]
             cell.textField?.stringValue = application.name

Tests/ConjureKitTests/EmojiIconTests.swift

@@ -2,7 +2,7 @@ import AppKit
 import Testing
 @testable import Conjure
 
-@Test(arguments: ["emoji", "notes", "translate"])
+@Test(arguments: ["emoji", "notes", "translate", "theme"])
 @MainActor func commandArtworkHasBalancedVisiblePadding(query: String) throws {
     _ = NSApplication.shared
     let launcher = LauncherWindowController()