Add foundational components and logic for migration, UI design, and input handling

- Introduced foundational UI components (`Badge`, `LockCard`, `SectionHeader`, `AvatarIcon`, etc.) for flexible layouts and consistent design.
- Added migration support with the `MigrationModal` component and backend integration for exporting/importing data between Electron and Tauri.
- Extended form components with `TextAreaInput`, `OrderInput`, `ToggleField`, and `ToolbarSelect` for improved input handling.
- Updated `ScribeShell` with migration popup logic to prompt users for data migration.
- Integrated `AlertStack` for better alert handling and notification management.
- Enhanced Rust/Tauri services with migration command implementations.
- Added translations and styles for new components.

lib/locales/en.json

@@ -187,9 +187,38 @@
         "title": "Discord",
         "description": "Join our community on Discord.",
         "badge": "DISCORD"
+      },
+      "migration": {
+        "title": "Import from Electron",
+        "description": "Migrate your data from the old version."
       }
     }
   },
+  "migration": {
+    "title": "Migration from Electron",
+    "introText": "We detected this is your first launch. If you were using the old version of ERitors Scribe (Electron), you can import your local data (books, characters, chapters, etc.).",
+    "steps": "How to proceed:",
+    "step1": "In the old Electron app, go to the menu and click \"Export for migration\".",
+    "step2": "A .json file and a copy of your database will be created on your Desktop.",
+    "step3": "Come back here and enter the path to the exported .json file.",
+    "later": "Later",
+    "haveFile": "I have the file",
+    "selectText": "Paste the full path to the migration file exported from Electron.",
+    "filePath": "Migration file path",
+    "back": "Back",
+    "import": "Import",
+    "importing": "Migrating...",
+    "successTitle": "Migration successful!",
+    "successText": "Your data has been imported successfully. Log in again to access it.",
+    "deleteReminder": "Remember to delete the migration file and the database copy from your Desktop.",
+    "done": "Done",
+    "errorTitle": "Migration error",
+    "close": "Close",
+    "retry": "Retry",
+    "fileNotFound": "The migration file was not found at this path.",
+    "dbNotFound": "The database was not found next to the migration file.",
+    "importFailed": "Import failed. Please check that the files are valid."
+  },
   "quillSense": {
     "needSubscription": "Please subscribe to QuillSense or bring your keys to access this feature.",
     "subscriptionDescription": "Unlock powerful writing tools to enrich your prose.",