feat: macOS hotkey fix, UI improvements, PKG packaging, test coverage

- Fix CGKeyboardEventKeycode constant (6→9) that prevented hotkey matching
- Rename LiveLingo.App→LiveLingo.Desktop to avoid macOS .app bundle misidentification
- Add macOS text injection with target window activation and proper timing
- Beautify About dialog and permission check dialog with dark theme
- Suppress llama.cpp native log output, reduce model log noise to Debug level
- Add full-chain logging: hotkey trigger → overlay show → translation
- Enable "Check Updates" tray menu item regardless of update URL config
- Add PackMac Nuke target for .pkg installer generation
- Fix Smoke tests by loading AppTheme.axaml in TestAppBuilder
- Expand test coverage: all key mappings, parser edge cases, VM commands
- 524 tests passing (235 Core + 289 Desktop)

Made-with: Cursor

Author: AGIBuild

.gitignore

@@ -425,3 +425,4 @@ coverage-report/
 
 # Nuke temp
 .nuke/temp/
+.DS_Store

LiveLingo.slnx

@@ -1,10 +1,10 @@
 <Solution>
   <Folder Name="/src/">
-    <Project Path="src/LiveLingo.App/LiveLingo.App.csproj" />
+    <Project Path="src/LiveLingo.Desktop/LiveLingo.Desktop.csproj" />
     <Project Path="src/LiveLingo.Core/LiveLingo.Core.csproj" />
   </Folder>
   <Folder Name="/tests/">
-    <Project Path="tests/LiveLingo.App.Tests/LiveLingo.App.Tests.csproj" />
+    <Project Path="tests/LiveLingo.Desktop.Tests/LiveLingo.Desktop.Tests.csproj" />
     <Project Path="tests/LiveLingo.Core.Tests/LiveLingo.Core.Tests.csproj" />
   </Folder>
 </Solution>

build/BuildTask.cs

@@ -43,7 +43,7 @@ class BuildTask : NukeBuild
     AbsolutePath ReleasesDir => RootDirectory / "releases";
     AbsolutePath RunSettingsFile => RootDirectory / "test.runsettings";
 
-    AbsolutePath AppProject => SourceDir / "LiveLingo.App" / "LiveLingo.App.csproj";
+    AbsolutePath AppProject => SourceDir / "LiveLingo.Desktop" / "LiveLingo.Desktop.csproj";
 
     Target Clean => _ => _
         .Before(Restore)
@@ -241,7 +241,7 @@ double RunMutationTesting()
         {
             DotNetToolRestore();
 
-            var mainExe = Runtime.StartsWith("win") ? "LiveLingo.App.exe" : "LiveLingo.App";
+            var mainExe = Runtime.StartsWith("win") ? "LiveLingo.Desktop.exe" : "LiveLingo.Desktop";
 
             var tempDir = RootDirectory / ".nuke" / "temp" / "vpk";
             tempDir.CreateDirectory();
@@ -262,4 +262,83 @@ double RunMutationTesting()
                 $"--outputDir {ReleasesDir}",
                 environmentVariables: vpkEnv);
         });
+
+    Target PackMac => _ => _
+        .DependsOn(Publish)
+        .Requires(() => Runtime.StartsWith("osx"))
+        .Executes(() =>
+        {
+            var macosDir = RootDirectory / "build" / "macos";
+            var appBundle = PublishDir / "LiveLingo.app";
+            var contentsDir = appBundle / "Contents";
+            var macOsDir = contentsDir / "MacOS";
+            var resourcesDir = contentsDir / "Resources";
+
+            appBundle.DeleteDirectory();
+            macOsDir.CreateDirectory();
+            resourcesDir.CreateDirectory();
+
+            var infoPlist = File.ReadAllText(macosDir / "Info.plist");
+            infoPlist = infoPlist.Replace("__VERSION__", Version);
+            File.WriteAllText(contentsDir / "Info.plist", infoPlist);
+
+            File.Copy(macosDir / "entitlements.plist", contentsDir / "entitlements.plist", overwrite: true);
+
+            var publishedFiles = PublishDir / Runtime;
+            foreach (var file in Directory.GetFiles(publishedFiles, "*", SearchOption.AllDirectories))
+            {
+                var relative = Path.GetRelativePath(publishedFiles, file);
+                var dest = macOsDir / relative;
+                Directory.CreateDirectory(Path.GetDirectoryName(dest)!);
+                File.Copy(file, dest, overwrite: true);
+            }
+
+            var mainExe = macOsDir / "LiveLingo.Desktop";
+            if (File.Exists(mainExe))
+                Chmod(mainExe, "755");
+
+            var svgIcon = RootDirectory / "src" / "LiveLingo.Desktop" / "Assets" / "app-icon.svg";
+            if (File.Exists(svgIcon))
+                File.Copy(svgIcon, resourcesDir / "app-icon.svg", overwrite: true);
+
+            ReleasesDir.CreateDirectory();
+
+            var componentPkg = PublishDir / "LiveLingo-component.pkg";
+            RunProcess("pkgbuild",
+                $"--root \"{appBundle}\" " +
+                $"--identifier com.livelingo.app " +
+                $"--version {Version} " +
+                $"--install-location /Applications/LiveLingo.app " +
+                $"\"{componentPkg}\"");
+
+            var finalPkg = ReleasesDir / $"LiveLingo-{Version}-{Runtime}.pkg";
+            RunProcess("productbuild",
+                $"--package \"{componentPkg}\" " +
+                $"\"{finalPkg}\"");
+
+            componentPkg.DeleteFile();
+            Log.Information("macOS PKG created: {Path}", finalPkg);
+        });
+
+    static void Chmod(string path, string mode)
+    {
+        RunProcess("chmod", $"{mode} \"{path}\"");
+    }
+
+    static void RunProcess(string tool, string arguments)
+    {
+        var psi = new System.Diagnostics.ProcessStartInfo(tool, arguments)
+        {
+            RedirectStandardOutput = true,
+            RedirectStandardError = true,
+            UseShellExecute = false
+        };
+        using var proc = System.Diagnostics.Process.Start(psi)!;
+        proc.WaitForExit();
+        if (proc.ExitCode != 0)
+        {
+            var stderr = proc.StandardError.ReadToEnd();
+            throw new Exception($"{tool} failed (exit {proc.ExitCode}): {stderr}");
+        }
+    }
 }

build/macos/Info.plist

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>CFBundleName</key>
+    <string>LiveLingo</string>
+    <key>CFBundleDisplayName</key>
+    <string>LiveLingo</string>
+    <key>CFBundleIdentifier</key>
+    <string>com.livelingo.app</string>
+    <key>CFBundleVersion</key>
+    <string>__VERSION__</string>
+    <key>CFBundleShortVersionString</key>
+    <string>__VERSION__</string>
+    <key>CFBundlePackageType</key>
+    <string>APPL</string>
+    <key>CFBundleExecutable</key>
+    <string>LiveLingo.Desktop</string>
+    <key>LSMinimumSystemVersion</key>
+    <string>12.0</string>
+    <key>NSHighResolutionCapable</key>
+    <true/>
+    <key>LSUIElement</key>
+    <true/>
+    <key>NSPrincipalClass</key>
+    <string>NSApplication</string>
+</dict>
+</plist>

build/macos/entitlements.plist

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>com.apple.security.automation.apple-events</key>
+    <true/>
+    <key>com.apple.security.device.audio-input</key>
+    <false/>
+    <key>com.apple.security.personal-information.addressbook</key>
+    <false/>
+</dict>
+</plist>