Add offline mode logic for book, story, and world operations

- Integrate `OfflineContext` into book, story settings, and related components.
- Add conditional logic to toggle between server API requests and offline IPC handlers (`db:book:delete`, `db:book:story:get`, `db:location:all`, etc.).
- Refactor and update IPC handlers to accept structured data arguments for improved consistency (`data: object`).
- Ensure stricter typings in IPC handlers and frontend functions.
- Improve error handling and user feedback in both online and offline modes.

electron/ipc/location.ipc.ts

@@ -28,9 +28,12 @@ interface UpdateLocationData {
 }
 
 // GET /location/all - Get all locations
-ipcMain.handle('db:location:all', createHandler<string, LocationProps[]>(
-        function(userId: string, bookId: string, lang: 'fr' | 'en'): LocationProps[] {
-            return Location.getAllLocations(userId, bookId, lang);
+interface GetAllLocationsData {
+    bookid: string;
+}
+ipcMain.handle('db:location:all', createHandler<GetAllLocationsData, LocationProps[]>(
+        function(userId: string, data: GetAllLocationsData, lang: 'fr' | 'en'): LocationProps[] {
+            return Location.getAllLocations(userId, data.bookid, lang);
         }
     )
 );
@@ -68,25 +71,34 @@ ipcMain.handle('db:location:update', createHandler<UpdateLocationData, UpdateLoc
 );
 
 // DELETE /location/delete - Delete location section
-ipcMain.handle('db:location:delete', createHandler<string, boolean>(
-        function(userId: string, locationId: string, lang: 'fr' | 'en'): boolean {
-            return Location.deleteLocationSection(userId, locationId, lang);
+interface DeleteLocationData {
+    locationId: string;
+}
+ipcMain.handle('db:location:delete', createHandler<DeleteLocationData, boolean>(
+        function(userId: string, data: DeleteLocationData, lang: 'fr' | 'en'): boolean {
+            return Location.deleteLocationSection(userId, data.locationId, lang);
         }
     )
 );
 
 // DELETE /location/element/delete - Delete location element
-ipcMain.handle('db:location:element:delete', createHandler<string, boolean>(
-        function(userId: string, elementId: string, lang: 'fr' | 'en'): boolean {
-            return Location.deleteLocationElement(userId, elementId, lang);
+interface DeleteLocationElementData {
+    elementId: string;
+}
+ipcMain.handle('db:location:element:delete', createHandler<DeleteLocationElementData, boolean>(
+        function(userId: string, data: DeleteLocationElementData, lang: 'fr' | 'en'): boolean {
+            return Location.deleteLocationElement(userId, data.elementId, lang);
         }
     )
 );
 
 // DELETE /location/sub-element/delete - Delete location sub-element
-ipcMain.handle('db:location:subelement:delete', createHandler<string, boolean>(
-        function(userId: string, subElementId: string, lang: 'fr' | 'en'): boolean {
-            return Location.deleteLocationSubElement(userId, subElementId, lang);
+interface DeleteLocationSubElementData {
+    subElementId: string;
+}
+ipcMain.handle('db:location:subelement:delete', createHandler<DeleteLocationSubElementData, boolean>(
+        function(userId: string, data: DeleteLocationSubElementData, lang: 'fr' | 'en'): boolean {
+            return Location.deleteLocationSubElement(userId, data.subElementId, lang);
         }
     )
 );