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/presentation/electron/shared/IpcChannelDefinitions.spec.ts

@@ -1,10 +1,10 @@
 import { describe, it, expect } from 'vitest';
 import { IpcChannel } from '@/presentation/electron/shared/IpcBridging/IpcChannel';
-import { IpcChannelDefinitions } from '@/presentation/electron/shared/IpcBridging/IpcChannelDefinitions';
+import { ChannelDefinitionKey, IpcChannelDefinitions } from '@/presentation/electron/shared/IpcBridging/IpcChannelDefinitions';
 
 describe('IpcChannelDefinitions', () => {
   it('defines IPC channels correctly', () => {
-    const testScenarios: Record<keyof typeof IpcChannelDefinitions, {
+    const testScenarios: Record<ChannelDefinitionKey, {
       readonly expectedNamespace: string;
       readonly expectedAccessibleMembers: readonly string[];
     }> = {
@@ -12,6 +12,10 @@ describe('IpcChannelDefinitions', () => {
         expectedNamespace: 'code-run',
         expectedAccessibleMembers: ['runCode'],
       },
+      Dialog: {
+        expectedNamespace: 'dialogs',
+        expectedAccessibleMembers: ['saveFile'],
+      },
     };
     Object.entries(testScenarios).forEach((
       [definitionKey, { expectedNamespace, expectedAccessibleMembers }],
@@ -49,7 +53,7 @@ describe('IpcChannelDefinitions', () => {
     it('has unique accessible members within each channel', () => {
       Object.values(IpcChannelDefinitions).forEach((channel) => {
         // arrange
-        const { accessibleMembers: accessibleMembersOfChannel } = channel;
+        const accessibleMembersOfChannel = channel.accessibleMembers as string[];
         // act
         const repeatedAccessibleMembersInChannel = accessibleMembersOfChannel
           .filter((item, index) => accessibleMembersOfChannel.indexOf(item) !== index);