Show native save dialogs in desktop app #50, #264

This commit introduces native operating system file dialogs in the
desktop application replacing the existing web-based dialogs.

It lays the foundation for future enhancements such as:

- Providing error messages when saving or executing files, addressing
  #264.
- Creating system restore points, addressing #50.

Documentation updates:

- Update `desktop-vs-web-features.md` with added functionality.
- Update `README.md` with security feature highlights.
- Update home page documentation to emphasize security features.

Other supporting changes include:

- Integrate IPC communication channels for secure Electron dialog API
  interactions.
- Refactor `IpcRegistration` for more type-safety and simplicity.
- Introduce a Vue hook to encapsulate dialog functionality.
- Improve errors during IPC registration for easier troubleshooting.
- Move `ClientLoggerFactory` for consistency in hooks organization and
  remove `LoggerFactory` interface for simplicity.
- Add tests for the save file dialog in the browser context.
- Add `Blob` polyfill in tests to compensate for the missing
  `blob.text()` function in `jsdom` (see jsdom/jsdom#2555).

Improve environment detection logic:

- Treat test environment as browser environments to correctly activate
  features based on the environment. This resolves issues where the
  environment is misidentified as desktop, but Electron preloader APIs
  are missing.
- Rename `isDesktop` environment identification variable to
  `isRunningAsDesktopApplication` for better clarity and to avoid
  confusion with desktop environments in web/browser/test environments.
- Simplify `BrowserRuntimeEnvironment` to consistently detect
  non-desktop application environments.
- Improve environment detection for Electron main process
  (electron/electron#2288).

tests/unit/infrastructure/Dialog/Electron/NodeFileOperationsStub.ts

@@ -0,0 +1,29 @@
+import { NodeFileOperations } from '@/infrastructure/Dialog/Electron/NodeElectronSaveFileDialog';
+import { StubWithObservableMethodCalls } from '@tests/unit/shared/Stubs/StubWithObservableMethodCalls';
+
+export class NodeFileOperationsStub
+  extends StubWithObservableMethodCalls<NodeFileOperations>
+  implements NodeFileOperations {
+  private pathSegmentSeparator = `[${NodeFileOperationsStub.name} path segment separator]`;
+
+  public join(...paths: string[]): string {
+    this.registerMethodCall({
+      methodName: 'join',
+      args: [...paths],
+    });
+    return paths.join(this.pathSegmentSeparator);
+  }
+
+  public writeFile(file: string, data: string): Promise<void> {
+    this.registerMethodCall({
+      methodName: 'writeFile',
+      args: [file, data],
+    });
+    return Promise.resolve();
+  }
+
+  public withPathSegmentSeparator(pathSegmentSeparator: string): this {
+    this.pathSegmentSeparator = pathSegmentSeparator;
+    return this;
+  }
+}