feat: copy and paste selected emoji

Sources/Conjure/LauncherWindowController.swift

@@ -1,6 +1,7 @@
 import AppKit
 import ConjureKit
 import CoreText
+import ApplicationServices
 
 @MainActor
 final class LauncherWindowController: NSWindowController, NSWindowDelegate, NSSearchFieldDelegate, NSTableViewDataSource, NSTableViewDelegate {
@@ -760,6 +761,32 @@ final class LauncherWindowController: NSWindowController, NSWindowDelegate, NSSe
         }
     }
 
+    private func pasteEmoji() {
+        let target = previousApplication
+        let changeCount = NSPasteboard.general.changeCount
+        dismiss()
+        guard let target, !target.isTerminated,
+              target.processIdentifier != ProcessInfo.processInfo.processIdentifier,
+              AXIsProcessTrustedWithOptions(["AXTrustedCheckOptionPrompt": true] as CFDictionary)
+        else { return }
+        Task { [weak self] in
+            // Wait for focus restoration; never paste into a different app or a reopened launcher.
+            for _ in 0..<20 {
+                try? await Task.sleep(for: .milliseconds(25))
+                guard let self, self.window?.isVisible == false, !target.isTerminated,
+                      NSPasteboard.general.changeCount == changeCount else { return }
+                guard NSWorkspace.shared.frontmostApplication?.processIdentifier == target.processIdentifier else { continue }
+                guard let down = CGEvent(keyboardEventSource: nil, virtualKey: 9, keyDown: true),
+                      let up = CGEvent(keyboardEventSource: nil, virtualKey: 9, keyDown: false) else { return }
+                down.flags = .maskCommand
+                up.flags = .maskCommand
+                down.postToPid(target.processIdentifier)
+                up.postToPid(target.processIdentifier)
+                return
+            }
+        }
+    }
+
     @objc private func goBackCommand() {
         translation?.goBack()
         emojiPicker?.goBack()
@@ -790,6 +817,7 @@ final class LauncherWindowController: NSWindowController, NSWindowDelegate, NSSe
             tool.input = { [weak self] in self?.searchField.stringValue ?? "" }
             tool.focusSearch = { [weak self] in self?.window?.makeFirstResponder(self?.searchField) }
             tool.copied = { [weak self] in self?.dismiss() }
+            tool.pasteRequested = { [weak self] in self?.pasteEmoji() }
             controller = tool
             placeholder = "Search emoji by name or :shortcode:…"
             accessibilityLabel = "Search emoji"