Fix file retention after updates on macOS #417

This fixes issue #417 where autoupdate installer files were not deleted
on macOS, leading to accumulation of old installers.

Key changes:

- Store update files in application-specific directory
- Clear update files directory on every app launch

Other supporting changes:

- Refactor file system operations to be more testable and reusable
- Improve separation of concerns in directory management
- Enhance dependency injection for auto-update logic
- Fix async completion to support `await` operations
- Add additional logging and revise some log messages during updates

src/infrastructure/CodeRunner/System/NodeElectronSystemOperations.ts

@@ -1,57 +1,13 @@
-import { join } from 'node:path';
-import { chmod, mkdir } from 'node:fs/promises';
 import { exec } from 'node:child_process';
-import { app } from 'electron/main';
-import type {
-  CommandOps, FileSystemOps, LocationOps, OperatingSystemOps, SystemOperations,
-} from './SystemOperations';
+import { NodeElectronFileSystemOperations } from '@/infrastructure/FileSystem/NodeElectronFileSystemOperations';
+import type { SystemOperations } from './SystemOperations';
 
 /**
  * Thin wrapper for Node and Electron APIs.
  */
-export class NodeElectronSystemOperations implements SystemOperations {
-  public readonly operatingSystem: OperatingSystemOps = {
-    /*
-      This method returns the directory for storing app's configuration files.
-      It appends your app's name to the default appData directory.
-      Conventionally, you should store user data files in this directory.
-      However, avoid writing large files here as some environments might back up this directory
-      to cloud storage, potentially causing issues with file size.
-
-      Based on tests it returns:
-
-      - Windows: `%APPDATA%\privacy.sexy`
-      - Linux: `$HOME/.config/privacy.sexy/runs`
-      - macOS: `$HOME/Library/Application Support/privacy.sexy/runs`
-
-      For more details, refer to the Electron documentation: https://web.archive.org/web/20240104154857/https://www.electronjs.org/docs/latest/api/app#appgetpathname
-    */
-    getUserDataDirectory: () => {
-      return app.getPath('userData');
-    },
-  };
-
-  public readonly location: LocationOps = {
-    combinePaths: (...pathSegments) => join(...pathSegments),
-  };
-
-  public readonly fileSystem: FileSystemOps = {
-    setFilePermissions: (
-      filePath: string,
-      mode: string | number,
-    ) => chmod(filePath, mode),
-    createDirectory: async (
-      directoryPath: string,
-      isRecursive?: boolean,
-    ) => {
-      await mkdir(directoryPath, { recursive: isRecursive });
-      // Ignoring the return value from `mkdir`, which is the first directory created
-      // when `recursive` is true, or empty return value.
-      // See https://github.com/nodejs/node/pull/31530
-    },
-  };
-
-  public readonly command: CommandOps = {
+export const NodeElectronSystemOperations: SystemOperations = {
+  fileSystem: NodeElectronFileSystemOperations,
+  command: {
     exec,
-  };
-}
+  },
+};