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.

components/book/settings/characters/CharacterDetail.tsx

@@ -29,6 +29,7 @@ import {Dispatch, SetStateAction, useContext, useEffect} from "react";
 import CharacterSectionElement from "@/components/book/settings/characters/CharacterSectionElement";
 import {useTranslations} from "next-intl";
 import {LangContext} from "@/context/LangContext";
+import OfflineContext, {OfflineContextType} from "@/context/OfflineContext";
 
 interface CharacterDetailProps {
     selectedCharacter: CharacterProps | null;
@@ -55,6 +56,7 @@ export default function CharacterDetail(
 ) {
     const t = useTranslations();
     const {lang} = useContext(LangContext);
+    const {isCurrentlyOffline} = useContext<OfflineContextType>(OfflineContext);
     const {session} = useContext(SessionContext);
     const {errorMessage} = useContext(AlertContext);
     
@@ -66,9 +68,16 @@ export default function CharacterDetail(
     
     async function getAttributes(): Promise<void> {
         try {
-            const response: CharacterAttribute = await System.authGetQueryToServer<CharacterAttribute>(`character/attribute`, session.accessToken, lang, {
-                characterId: selectedCharacter?.id,
-            });
+            let response: CharacterAttribute;
+            if (isCurrentlyOffline()) {
+                response = await window.electron.invoke<CharacterAttribute>('db:character:attributes', {
+                    characterId: selectedCharacter?.id,
+                });
+            } else {
+                response = await System.authGetQueryToServer<CharacterAttribute>(`character/attribute`, session.accessToken, lang, {
+                    characterId: selectedCharacter?.id,
+                });
+            }
             if (response) {
                 setSelectedCharacter({
                     id: selectedCharacter?.id ?? '',