diff --git a/electron/ipc/book.ipc.ts b/electron/ipc/book.ipc.ts
index 882e145..532689d 100644
--- a/electron/ipc/book.ipc.ts
+++ b/electron/ipc/book.ipc.ts
@@ -3,29 +3,6 @@ import { createHandler } from '../database/LocalSystem.js';
 import Book from '../database/models/Book.js';
 import type { BookProps, GuideLine, GuideLineAI, Act, Issue, WorldProps } from '../database/models/Book.js';
 
-// ============================================================
-// 1. GET /books - Get all books
-// ============================================================
-ipcMain.handle('db:book:books', createHandler<void, BookProps[]>(
-        async function(userId: string, _body: void, lang: 'fr' | 'en'):Promise<BookProps[]> {
-            return await Book.getBooks(userId, lang);
-        }
-    )
-);
-
-// ============================================================
-// 2. GET /book/:id - Get single book
-// ============================================================
-ipcMain.handle('db:book:bookBasicInformation', createHandler<string, BookProps>(
-        async function(userId: string, bookId: string, lang: 'fr' | 'en'):Promise<BookProps> {
-            return await Book.getBook(bookId, userId);
-        }
-    )
-);
-
-// ============================================================
-// 3. POST /book/basic-information - Update book basic info
-// ============================================================
 interface UpdateBookBasicData {
     title: string;
     subTitle: string;
@@ -35,41 +12,6 @@ interface UpdateBookBasicData {
     bookId: string;
 }
 
-ipcMain.handle(
-    'db:book:updateBasicInformation',
-    createHandler<UpdateBookBasicData, boolean>(
-        function(userId: string, data: UpdateBookBasicData, lang: 'fr' | 'en') {
-            return Book.updateBookBasicInformation(
-                userId,
-                data.title,
-                data.subTitle,
-                data.summary,
-                data.publicationDate,
-                data.wordCount,
-                data.bookId,
-                lang
-            );
-        }
-    )
-);
-// Frontend: invoke('db:book:updateBasicInformation', data)
-
-// ============================================================
-// 4. GET /book/guide-line - Get guideline
-// ============================================================
-ipcMain.handle(
-    'db:book:guideline:get',
-    createHandler<string, GuideLine | null>(
-        async function(userId: string, bookId: string, lang: 'fr' | 'en') {
-            return await Book.getGuideLine(userId, bookId, lang);
-        }
-    )
-);
-// Frontend: invoke('db:book:guideline:get', bookId)
-
-// ============================================================
-// 5. POST /book/guide-line - Update guideline
-// ============================================================
 interface UpdateGuideLineData {
     bookId: string;
     tone: string | null;
@@ -84,9 +26,94 @@ interface UpdateGuideLineData {
     intendedAudience: string | null;
 }
 
+interface StoryData {
+    acts: Act[];
+    issues: Issue[];
+}
+
+interface CreateBookData {
+    title: string;
+    subTitle: string | null;
+    summary: string | null;
+    type: string;
+    serieId: number | null;
+    desiredReleaseDate: string | null;
+    desiredWordCount: number | null;
+}
+
+interface AddIncidentData {
+    bookId: string;
+    name: string;
+}
+
+interface AddPlotPointData {
+    bookId: string;
+    name: string;
+    incidentId: string;
+}
+
+interface AddIssueData {
+    bookId: string;
+    name: string;
+}
+
+interface AddWorldData {
+    bookId: string;
+    worldName: string;
+}
+
+interface AddWorldElementData {
+    worldId: string;
+    elementName: string;
+    elementType: number;
+}
+
+interface SetAIGuideLineData {
+    bookId: string;
+    narrativeType: number;
+    dialogueType: number;
+    globalResume: string;
+    atmosphere: string;
+    verbeTense: number;
+    langue: number;
+    themes: string;
+}
+
+// GET /books - Get all books
+ipcMain.handle('db:book:books', createHandler<void, BookProps[]>(
+        async function(userId: string, _body: void, lang: 'fr' | 'en'):Promise<BookProps[]> {
+            return await Book.getBooks(userId, lang);
+        }
+    )
+);
+
+// GET /book/:id - Get single book
+ipcMain.handle('db:book:bookBasicInformation', createHandler<string, BookProps>(
+        async function(userId: string, bookId: string, lang: 'fr' | 'en'):Promise<BookProps> {
+            return await Book.getBook(bookId, userId);
+        }
+    )
+);
+
+// POST /book/basic-information - Update book basic info
+ipcMain.handle('db:book:updateBasicInformation', createHandler<UpdateBookBasicData, boolean>(
+        function(userId: string, data: UpdateBookBasicData, lang: 'fr' | 'en') {
+            return Book.updateBookBasicInformation(userId, data.title, data.subTitle, data.summary, data.publicationDate, data.wordCount, data.bookId, lang);
+        }
+    )
+);
+
+// GET /book/guide-line - Get guideline
 ipcMain.handle(
-    'db:book:guideline:update',
-    createHandler<UpdateGuideLineData, boolean>(
+    'db:book:guideline:get',
+    createHandler<string, GuideLine | null>(async function(userId: string, bookId: string, lang: 'fr' | 'en') {
+            return await Book.getGuideLine(userId, bookId, lang);
+        }
+    )
+);
+
+// POST /book/guide-line - Update guideline
+ipcMain.handle('db:book:guideline:update', createHandler<UpdateGuideLineData, boolean>(
         async function(userId: string, data: UpdateGuideLineData, lang: 'fr' | 'en') {
             return await Book.updateGuideLine(
                 userId,
@@ -106,22 +133,12 @@ ipcMain.handle(
         }
     )
 );
-// Frontend: invoke('db:book:guideline:update', data)
 
-// ============================================================
-// 6. GET /book/story - Get story data (acts + issues)
-// ============================================================
-interface StoryData {
-    acts: Act[];
-    issues: Issue[];
-}
-
-ipcMain.handle(
-    'db:book:story:get',
-    createHandler<string, StoryData>(
-        async function(userId: string, bookId: string, lang: 'fr' | 'en') {
-            const acts = await Book.getActsData(userId, bookId, lang);
-            const issues = await Book.getIssuesFromBook(userId, bookId, lang);
+// GET /book/story - Get story data (acts + issues)
+ipcMain.handle('db:book:story:get', createHandler<string, StoryData>(
+        async function(userId: string, bookId: string, lang: 'fr' | 'en'):Promise<StoryData> {
+            const acts:Act[] = await Book.getActsData(userId, bookId, lang);
+            const issues:Issue[] = await Book.getIssuesFromBook(userId, bookId, lang);
             return {
                 acts,
                 issues
@@ -129,44 +146,9 @@ ipcMain.handle(
         }
     )
 );
-// Frontend: invoke('db:book:story:get', bookId)
 
-// ============================================================
-// 7. POST /book/story - Update story
-// TODO: Implement updateStory in Book.ts
-// ============================================================
-// interface StoryUpdateData {
-//     bookId: string;
-//     acts: Act[];
-//     mainChapters: ChapterProps[];
-// }
-//
-// ipcMain.handle(
-//     'db:book:story:update',
-//     createHandler<StoryUpdateData, boolean>(
-//         function(userId: string, data: StoryUpdateData, lang: 'fr' | 'en') {
-//             return Book.updateStory(userId, data.bookId, data.acts, data.mainChapters, lang);
-//         }
-//     )
-// );
-// // Frontend: invoke('db:book:story:update', data)
-
-// ============================================================
-// 8. POST /book/add - Create new book
-// ============================================================
-interface CreateBookData {
-    title: string;
-    subTitle: string | null;
-    summary: string | null;
-    type: string;
-    serieId: number | null;
-    desiredReleaseDate: string | null;
-    desiredWordCount: number | null;
-}
-
-ipcMain.handle(
-    'db:book:create',
-    createHandler<CreateBookData, string>(
+// POST /book/add - Create new book
+ipcMain.handle('db:book:create', createHandler<CreateBookData, string>(
         function(userId: string, data: CreateBookData, lang: 'fr' | 'en') {
             return Book.addBook(
                 null,
@@ -183,35 +165,9 @@ ipcMain.handle(
         }
     )
 );
-// Frontend: invoke('db:book:create', data)
 
-// ============================================================
-// 9. POST /book/cover - Update book cover
-// TODO: Implement updateBookCover in Book.ts
-// ============================================================
-// interface UpdateCoverData {
-//     bookId: string;
-//     coverImageName: string;
-// }
-//
-// ipcMain.handle(
-//     'db:book:cover:update',
-//     createHandler<UpdateCoverData, boolean>(
-//         function(userId: string, data: UpdateCoverData, lang: 'fr' | 'en') {
-//             return Book.updateBookCover(userId, data.bookId, data.coverImageName, lang);
-//         }
-//     )
-// );
-// // Frontend: invoke('db:book:cover:update', { bookId, coverImageName })
-
-// ============================================================
-// 10. POST /book/incident/new - Add incident
-// ============================================================
-interface AddIncidentData {
-    bookId: string;
-    name: string;
-}
 
+// POST /book/incident/new - Add incident
 ipcMain.handle(
     'db:book:incident:add',
     createHandler<AddIncidentData, string>(
@@ -220,38 +176,22 @@ ipcMain.handle(
         }
     )
 );
-// Frontend: invoke('db:book:incident:add', { bookId, name })
 
-// ============================================================
-// 11. DELETE /book/incident/remove - Remove incident
-// ============================================================
+// DELETE /book/incident/remove - Remove incident
 interface RemoveIncidentData {
     bookId: string;
     incidentId: string;
 }
 
-ipcMain.handle(
-    'db:book:incident:remove',
-    createHandler<RemoveIncidentData, boolean>(
+ipcMain.handle('db:book:incident:remove', createHandler<RemoveIncidentData, boolean>(
         function(userId: string, data: RemoveIncidentData, lang: 'fr' | 'en') {
             return Book.removeIncident(userId, data.bookId, data.incidentId, lang);
         }
     )
 );
-// Frontend: invoke('db:book:incident:remove', { bookId, incidentId })
 
-// ============================================================
-// 12. POST /book/plot/new - Add plot point
-// ============================================================
-interface AddPlotPointData {
-    bookId: string;
-    name: string;
-    incidentId: string;
-}
-
-ipcMain.handle(
-    'db:book:plot:add',
-    createHandler<AddPlotPointData, string>(
+// POST /book/plot/new - Add plot point
+ipcMain.handle('db:book:plot:add', createHandler<AddPlotPointData, string>(
         function(userId: string, data: AddPlotPointData, lang: 'fr' | 'en') {
             return Book.addNewPlotPoint(
                 userId,
@@ -263,11 +203,8 @@ ipcMain.handle(
         }
     )
 );
-// Frontend: invoke('db:book:plot:add', { bookId, name, incidentId })
 
-// ============================================================
-// 13. DELETE /book/plot/remove - Remove plot point
-// ============================================================
+// DELETE /book/plot/remove - Remove plot point
 ipcMain.handle(
     'db:book:plot:remove',
     createHandler<string, boolean>(
@@ -276,82 +213,41 @@ ipcMain.handle(
         }
     )
 );
-// Frontend: invoke('db:book:plot:remove', plotPointId)
 
-// ============================================================
-// 14. POST /book/issue/add - Add issue
-// ============================================================
-interface AddIssueData {
-    bookId: string;
-    name: string;
-}
-
-ipcMain.handle(
-    'db:book:issue:add',
-    createHandler<AddIssueData, string>(
+// POST /book/issue/add - Add issue
+ipcMain.handle('db:book:issue:add', createHandler<AddIssueData, string>(
         function(userId: string, data: AddIssueData, lang: 'fr' | 'en') {
             return Book.addNewIssue(userId, data.bookId, data.name, lang);
         }
     )
 );
-// Frontend: invoke('db:book:issue:add', { bookId, name })
 
-// ============================================================
-// 15. DELETE /book/issue/remove - Remove issue
-// ============================================================
-ipcMain.handle(
-    'db:book:issue:remove',
-    createHandler<string, boolean>(
+// DELETE /book/issue/remove - Remove issue
+ipcMain.handle('db:book:issue:remove', createHandler<string, boolean>(
         function(userId: string, issueId: string, lang: 'fr' | 'en') {
             return Book.removeIssue(userId, issueId, lang);
         }
     )
 );
-// Frontend: invoke('db:book:issue:remove', issueId)
 
-// ============================================================
-// 16. GET /book/worlds - Get worlds for book
-// ============================================================
-ipcMain.handle(
-    'db:book:worlds:get',
-    createHandler<string, WorldProps[]>(
+// GET /book/worlds - Get worlds for book
+ipcMain.handle('db:book:worlds:get', createHandler<string, WorldProps[]>(
         function(userId: string, bookId: string, lang: 'fr' | 'en') {
             return Book.getWorlds(userId, bookId, lang);
         }
     )
 );
-// Frontend: invoke('db:book:worlds:get', bookId)
 
-// ============================================================
-// 17. POST /book/world/add - Add world
-// ============================================================
-interface AddWorldData {
-    bookId: string;
-    worldName: string;
-}
-
-ipcMain.handle(
-    'db:book:world:add',
-    createHandler<AddWorldData, string>(
+// POST /book/world/add - Add world
+ipcMain.handle('db:book:world:add', createHandler<AddWorldData, string>(
         function(userId: string, data: AddWorldData, lang: 'fr' | 'en') {
             return Book.addNewWorld(userId, data.bookId, data.worldName, lang);
         }
     )
 );
-// Frontend: invoke('db:book:world:add', { bookId, worldName })
 
-// ============================================================
-// 18. POST /book/world/element/add - Add element to world
-// ============================================================
-interface AddWorldElementData {
-    worldId: string;
-    elementName: string;
-    elementType: number;
-}
-
-ipcMain.handle(
-    'db:book:world:element:add',
-    createHandler<AddWorldElementData, string>(
+// POST /book/world/element/add - Add element to world
+ipcMain.handle('db:book:world:element:add', createHandler<AddWorldElementData, string>(
         function(userId: string, data: AddWorldElementData, lang: 'fr' | 'en') {
             return Book.addNewElementToWorld(
                 userId,
@@ -363,92 +259,32 @@ ipcMain.handle(
         }
     )
 );
-// Frontend: invoke('db:book:world:element:add', { worldId, elementName, elementType })
-
-// ============================================================
-// 19. DELETE /book/world/element/delete - Remove element from world
-// ============================================================
-ipcMain.handle(
-    'db:book:world:element:remove',
-    createHandler<string, boolean>(
+// DELETE /book/world/element/delete - Remove element from world
+ipcMain.handle('db:book:world:element:remove', createHandler<string, boolean>(
         function(userId: string, elementId: string, lang: 'fr' | 'en') {
             return Book.removeElementFromWorld(userId, elementId, lang);
         }
     )
 );
-// Frontend: invoke('db:book:world:element:remove', elementId)
 
-// ============================================================
-// 20. PUT /book/world/update - Update world
-// TODO: Implement updateWorld in Book.ts
-// ============================================================
-// ipcMain.handle(
-//     'db:book:world:update',
-//     createHandler<WorldProps, boolean>(
-//         function(userId: string, world: WorldProps, lang: 'fr' | 'en') {
-//             return Book.updateWorld(userId, world, lang);
-//         }
-//     )
-// );
-// // Frontend: invoke('db:book:world:update', worldData)
-
-// ============================================================
-// 21. DELETE /book/cover/delete - Delete book cover
-// TODO: Implement deleteCoverPicture in Book.ts
-// ============================================================
-// ipcMain.handle(
-//     'db:book:cover:delete',
-//     createHandler<string, boolean>(
-//         function(userId: string, bookId: string, lang: 'fr' | 'en') {
-//             return Book.deleteCoverPicture(userId, bookId, lang);
-//         }
-//     )
-// );
-// // Frontend: invoke('db:book:cover:delete', bookId)
-
-// ============================================================
-// 22. DELETE /book/delete - Delete book
-// ============================================================
-ipcMain.handle(
-    'db:book:delete',
-    createHandler<string, boolean>(
+// DELETE /book/delete - Delete book
+ipcMain.handle('db:book:delete', createHandler<string, boolean>(
         function(userId: string, bookId: string, lang: 'fr' | 'en') {
             return Book.removeBook(userId, bookId, lang);
         }
     )
 );
-// Frontend: invoke('db:book:delete', bookId)
 
-// ============================================================
-// 23. GET /book/ai/guideline - Get AI guideline
-// ============================================================
-ipcMain.handle(
-    'db:book:guideline:ai:get',
-    createHandler<string, GuideLineAI>(
+// GET /book/ai/guideline - Get AI guideline
+ipcMain.handle('db:book:guideline:ai:get', createHandler<string, GuideLineAI>(
         function(userId: string, bookId: string, lang: 'fr' | 'en') {
             return Book.getGuideLineAI(bookId, userId, lang);
         }
     )
 );
-// Frontend: invoke('db:book:guideline:ai:get', bookId)
 
-// ============================================================
-// 24. POST /book/ai/guideline (set) - Set AI guideline
-// ============================================================
-interface SetAIGuideLineData {
-    bookId: string;
-    narrativeType: number;
-    dialogueType: number;
-    globalResume: string;
-    atmosphere: string;
-    verbeTense: number;
-    langue: number;
-    themes: string;
-}
-
-ipcMain.handle(
-    'db:book:guideline:ai:set',
-    createHandler<SetAIGuideLineData, boolean>(
+// POST /book/ai/guideline (set) - Set AI guideline
+ipcMain.handle('db:book:guideline:ai:set', createHandler<SetAIGuideLineData, boolean>(
         function(userId: string, data: SetAIGuideLineData, lang: 'fr' | 'en') {
             return Book.setAIGuideLine(
                 data.bookId,
@@ -465,69 +301,3 @@ ipcMain.handle(
         }
     )
 );
-// Frontend: invoke('db:book:guideline:ai:set', data)
-
-// ============================================================
-// 25. GET /book/transform/epub - Export to EPUB
-// TODO: Implement transformToEpub in Book.ts
-// ============================================================
-// ipcMain.handle(
-//     'db:book:export:epub',
-//     createHandler<string, ExportData>(
-//         function(userId: string, bookId: string, lang: 'fr' | 'en') {
-//             return Book.transformToEpub(userId, bookId, lang);
-//         }
-//     )
-// );
-// // Frontend: invoke('db:book:export:epub', bookId)
-
-// ============================================================
-// 26. GET /book/transform/pdf - Export to PDF
-// TODO: Implement transformToPDF in Book.ts
-// ============================================================
-// ipcMain.handle(
-//     'db:book:export:pdf',
-//     createHandler<string, ExportData>(
-//         function(userId: string, bookId: string, lang: 'fr' | 'en') {
-//             return Book.transformToPDF(userId, bookId, lang);
-//         }
-//     )
-// );
-// // Frontend: invoke('db:book:export:pdf', bookId)
-
-// ============================================================
-// 27. GET /book/transform/docx - Export to DOCX
-// TODO: Implement transformToDOCX in Book.ts
-// ============================================================
-// ipcMain.handle(
-//     'db:book:export:docx',
-//     createHandler<string, ExportData>(
-//         function(userId: string, bookId: string, lang: 'fr' | 'en') {
-//             return Book.transformToDOCX(userId, bookId, lang);
-//         }
-//     )
-// );
-// // Frontend: invoke('db:book:export:docx', bookId)
-
-// ============================================================
-// 28. GET /book/tags - Get tags from book
-// TODO: Implement getTagsFromBook in Book.ts
-// ============================================================
-// interface BookTags {
-//     characters: Tag[];
-//     locations: Tag[];
-//     objects: Tag[];
-//     worldElements: Tag[];
-// }
-//
-// ipcMain.handle(
-//     'db:book:tags:get',
-//     createHandler<string, BookTags>(
-//         function(userId: string, bookId: string, lang: 'fr' | 'en') {
-//             return Book.getTagsFromBook(userId, bookId, lang);
-//         }
-//     )
-// );
-// // Frontend: invoke('db:book:tags:get', bookId)
-
-console.log('[IPC] Book handlers registered');