Refactor character, chapter, and story components to support offline mode

- Add `OfflineContext` and `BookContext` to components for offline state management.
- Introduce conditional logic to toggle between server API requests and offline IPC handlers for CRUD operations.
- Refine `TextEditor`, `DraftCompanion`, and other components to disable actions or features unavailable in offline mode.
- Improve error handling and user feedback in both online and offline scenarios.

components/book/settings/story/Issue.tsx

@@ -42,10 +42,17 @@ export default function Issues({issues, setIssues}: IssuesProps) {
                     name: newIssueName,
                 });
             } else {
-                issueId = await System.authPostToServer<string>('book/issue/add', {
-                    bookId,
-                    name: newIssueName,
-                }, token, lang);
+                if (book?.localBook) {
+                    issueId = await window.electron.invoke<string>('db:book:issue:add', {
+                        bookId,
+                        name: newIssueName,
+                    });
+                } else {
+                    issueId = await System.authPostToServer<string>('book/issue/add', {
+                        bookId,
+                        name: newIssueName,
+                    }, token, lang);
+                }
             }
             if (!issueId) {
                 errorMessage(t("issues.errorAdd"));
@@ -81,15 +88,22 @@ export default function Issues({issues, setIssues}: IssuesProps) {
                     issueId,
                 });
             } else {
-                response = await System.authDeleteToServer<boolean>(
-                    'book/issue/remove',
-                    {
+                if (book?.localBook) {
+                    response = await window.electron.invoke<boolean>('db:book:issue:remove', {
                         bookId,
                         issueId,
-                    },
-                    token,
-                    lang
-                );
+                    });
+                } else {
+                    response = await System.authDeleteToServer<boolean>(
+                        'book/issue/remove',
+                        {
+                            bookId,
+                            issueId,
+                        },
+                        token,
+                        lang
+                    );
+                }
             }
             if (response) {
                 const updatedIssues: Issue[] = issues.filter((issue: Issue): boolean => issue.id !== issueId,);