feat(app): Add Create Seed tab and enhance Seed Blender workflow

This major update introduces a new "Create" tab for generating fresh BIP39 mnemonic seeds and significantly improves the entire application workflow, particularly the interaction with the Seed Blender.

**✨ New Features & Enhancements**

*   **Create Seed Tab**:
    *   Add a new "Create" tab as the default view for generating 12 or 24-word BIP39 seeds.
    *   Implement a destination selector, allowing users to send the newly generated seed directly to the "Backup" tab for encryption or to the "Seed Blender" for advanced operations.
    *   The UI automatically switches to the chosen destination tab after generation for a seamless workflow.

*   **Seed Blender Integration**:
    *   Generated seeds sent to the Seed Blender are now automatically added to the list of inputs.
    *   The Seed Blender's state is now preserved when switching between tabs, preventing data loss and allowing users to accumulate seeds from the Create tab.

*   **Global Reset Functionality**:
    *   A "Reset All" button has been added to the main header for a global application reset.
    *   This action clears all component states (including the Seed Blender's internal state), passwords, generated data, and the in-memory session key, returning the app to a fresh initial state.

*   **UI/UX Polish**:
    *   The "Use This Seed for Backup" button in the Seed Blender has been restyled to match the application's cyberpunk aesthetic and its text clarified.
    *   The "Create" tab UI is cleared automatically after a seed is generated and the user is navigated away, ensuring a clean slate for the next use.

**🔒 Security Fixes**

*   **Auto-Clear Passwords**: Password and passphrase fields in both the "Backup" and "Restore" tabs are now automatically cleared from the UI and state after a successful encryption or decryption operation. This prevents sensitive data from lingering in the application.
*   **Robust Seed Generation**: The seed generation process now uses the secure `crypto.getRandomValues` Web API to generate entropy before converting it to a mnemonic.

**🐛 Bug Fixes**

*   **Seed Blender State**:
    *   Fixed a critical bug where the Seed Blender's internal state was lost when switching tabs. The component is now kept mounted but hidden via CSS.
    *   Resolved an issue where a seed sent from the "Create" tab could be added multiple times to the blender. A `useRef` guard now prevents duplicates.
    *   Corrected a race condition where transferring a blended seed to the "Backup" tab would clear the blender's state before the data could be used. The auto-clear has been removed in favor of the manual "Reset All" button.

package.json

@@ -1,7 +1,7 @@
 {
   "name": "seedpgp-web",
   "private": true,
-  "version": "1.4.4",
+  "version": "1.4.5",
   "type": "module",
   "scripts": {
     "dev": "vite",