feat: add backup file management settings

- Added settings UI to enable/disable .bak file creation when saving files
- Created settings storage in .obsidian/obsiviewer.json to persist backup preferences
- Added API endpoints to read/write backup settings (/api/settings)
- Implemented automatic cleanup of existing .bak files when disabling backups
- Modified file save operations to respect backup setting across notes, bookmarks and graph files
- Removed existing .bak files from version control

server/index.mjs

@@ -51,11 +51,74 @@ const distDir = path.join(rootDir, 'dist');
 // Centralized vault directory
 const vaultDir = path.isAbsolute(CFG_VAULT_PATH) ? CFG_VAULT_PATH : path.join(rootDir, CFG_VAULT_PATH);
 
+const settingsPath = path.join(vaultDir, '.obsidian', 'obsiviewer.json');
+let enableBackups = true;
+
+try {
+  const settings = JSON.parse(fs.readFileSync(settingsPath, 'utf8'));
+  enableBackups = settings.enableBackups;
+} catch (error) {
+  // No settings file or invalid JSON, use default
+}
+
 const vaultEventClients = new Set();
 
 // Phase 3: Advanced caching and monitoring
 const metadataCache = new MetadataCache({ ttlMs: 5 * 60 * 1000, maxItems: 10_000 });
 
+// ---------- Settings storage helpers ----------
+function ensureSettingsStorage() {
+  const obsidianDir = path.join(vaultDir, '.obsidian');
+  if (!fs.existsSync(obsidianDir)) {
+    fs.mkdirSync(obsidianDir, { recursive: true });
+  }
+  if (!fs.existsSync(settingsPath)) {
+    const initial = { enableBackups: true };
+    try { fs.writeFileSync(settingsPath, JSON.stringify(initial, null, 2), 'utf-8'); } catch {}
+  }
+}
+
+function readSettings() {
+  ensureSettingsStorage();
+  try {
+    const raw = fs.readFileSync(settingsPath, 'utf-8');
+    const parsed = JSON.parse(raw);
+    return { enableBackups: parsed.enableBackups !== false };
+  } catch {
+    return { enableBackups: true };
+  }
+}
+
+function writeSettings(next) {
+  ensureSettingsStorage();
+  try {
+    fs.writeFileSync(settingsPath, JSON.stringify(next, null, 2), 'utf-8');
+  } catch {}
+}
+
+function deleteAllBakFiles(root) {
+  let count = 0;
+  const stack = [root];
+  while (stack.length) {
+    const dir = stack.pop();
+    let entries = [];
+    try { entries = fs.readdirSync(dir, { withFileTypes: true }); } catch { continue; }
+    for (const de of entries) {
+      const full = path.join(dir, de.name);
+      if (de.isDirectory()) { stack.push(full); continue; }
+      if (!de.isFile()) continue;
+      if (de.name.toLowerCase().endsWith('.bak')) {
+        try { fs.unlinkSync(full); count++; } catch {}
+      }
+    }
+  }
+  return count;
+}
+
+// Initialize settings on startup
+ensureSettingsStorage();
+enableBackups = readSettings().enableBackups;
+
 // List all folders under the vault (relative paths, forward slashes)
 app.get('/api/folders/list', (req, res) => {
   try {
@@ -507,6 +570,39 @@ app.use(cors({
 // Exposer les fichiers de la voûte pour un accès direct si nécessaire
 app.use('/vault', express.static(vaultDir));
 
+// ---------- Settings API ----------
+app.get('/api/settings', (req, res) => {
+  try {
+    const current = readSettings();
+    return res.json(current);
+  } catch (error) {
+    console.error('GET /api/settings error:', error);
+    return res.status(500).json({ error: 'Unable to read settings' });
+  }
+});
+
+app.put('/api/settings', express.json(), (req, res) => {
+  try {
+    const body = req.body || {};
+    const nextEnable = body.enableBackups !== false;
+    const prev = readSettings();
+    const next = { enableBackups: nextEnable };
+    writeSettings(next);
+    enableBackups = nextEnable;
+
+    let deleted = 0;
+    if (prev.enableBackups && !nextEnable) {
+      // On disabling backups, remove all existing .bak files
+      deleted = deleteAllBakFiles(vaultDir);
+    }
+
+    return res.json({ success: true, enableBackups, deletedBakFiles: deleted });
+  } catch (error) {
+    console.error('PUT /api/settings error:', error);
+    return res.status(500).json({ error: 'Unable to save settings' });
+  }
+});
+
 // Résolution des attachements: recherche le fichier en remontant les dossiers depuis la note, puis dans la voûte
 app.get('/api/attachments/resolve', (req, res) => {
   try {
@@ -1116,7 +1212,7 @@ app.put('/api/files', express.json({ limit: '10mb' }), express.text({ limit: '10
     const backup = abs + '.bak';
 
     try {
-      if (hasExisting) fs.copyFileSync(abs, backup);
+      if (hasExisting && enableBackups) fs.copyFileSync(abs, backup);
       fs.writeFileSync(temp, finalContent, 'utf-8');
       fs.renameSync(temp, abs);
       console.log('[PUT /api/files] wrote file path=%s bytes=%d', rel, Buffer.byteLength(finalContent, 'utf-8'));
@@ -1283,7 +1379,7 @@ app.put('/api/vault/graph', (req, res) => {
 
     // Create backup before writing
     const backupPath = graphPath + '.bak';
-    if (fs.existsSync(graphPath)) {
+    if (enableBackups && fs.existsSync(graphPath)) {
       fs.copyFileSync(graphPath, backupPath);
     }
 
@@ -1341,7 +1437,7 @@ app.put('/api/vault/bookmarks', (req, res) => {
 
     // Create backup before writing
     const backupPath = bookmarksPath + '.bak';
-    if (fs.existsSync(bookmarksPath)) {
+    if (enableBackups && fs.existsSync(bookmarksPath)) {
       fs.copyFileSync(bookmarksPath, backupPath);
     }
 
@@ -1469,8 +1565,9 @@ app.put(/^\/api\/notes\/(.+?)\/tags$/, express.json(), async (req, res) => {
     const backupPath = absolutePath + '.bak';
     
     try {
-      // Create backup
+      if (enableBackups) {
         fs.copyFileSync(absolutePath, backupPath);
+      }
       
       // Write to temp file
       fs.writeFileSync(tempPath, updatedContent, 'utf-8');

src/app/features/parameters/parameters.page.html

@@ -112,6 +112,34 @@
       </div>
     </section>
 
+    <!-- Backups Section -->
+    <section class="parameters-section">
+      <h2 class="section-title">
+        <svg class="section-icon" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+          <path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"/>
+          <polyline points="7 10 12 15 17 10"/>
+          <line x1="12" y1="15" x2="12" y2="3"/>
+        </svg>
+        Backups (.bak files)
+      </h2>
+
+      <div class="setting-group">
+        <label class="setting-label">Enable backup files when saving</label>
+        <div class="toggle-switch">
+          <input 
+            type="checkbox" 
+            id="enableBackups"
+            [checked]="backupsEnabled()"
+            (change)="toggleBackups()"
+            class="toggle-input" />
+          <label for="enableBackups" class="toggle-label">
+            <span class="toggle-slider"></span>
+          </label>
+        </div>
+        <p class="setting-hint">When disabled, existing .bak files in the vault will be removed automatically.</p>
+      </div>
+    </section>
+
     <!-- Folder Filtering Section -->
     <section class="parameters-section">
       <h2 class="section-title">

src/app/features/parameters/parameters.page.ts

@@ -2,6 +2,7 @@ import { Component, inject, signal, effect } from '@angular/core';
 import { CommonModule } from '@angular/common';
 import { FormsModule } from '@angular/forms';
 import { ThemeService, ThemeMode, ThemeId, Language } from '../../core/services/theme.service';
+import { SettingsService } from '../../services/settings.service';
 import { ToastService } from '../../shared/toast/toast.service';
 import { FolderFilterService, FolderFilterConfig } from '../../services/folder-filter.service';
 
@@ -16,11 +17,13 @@ export class ParametersPage {
   private themeService = inject(ThemeService);
   private toastService = inject(ToastService);
   private folderFilterService = inject(FolderFilterService);
+  private settingsService = inject(SettingsService);
 
   // Reactive prefs
   prefs = signal(this.themeService.prefsValue);
   folderFilterConfig = signal<FolderFilterConfig>(this.folderFilterService.getConfig());
   newExcludedFolder = '';
+  backupsEnabled = signal<boolean>(true);
 
   modes: ThemeMode[] = ['system', 'light', 'dark'];
   themes: ThemeId[] = ['light', 'dark', 'obsidian', 'nord', 'notion', 'github', 'discord', 'monokai'];
@@ -47,6 +50,13 @@ export class ParametersPage {
       
       return () => subscription.unsubscribe();
     });
+
+    effect(() => {
+      const sub = this.settingsService.getSettings().subscribe(({ enableBackups }) => {
+        this.backupsEnabled.set(!!enableBackups);
+      });
+      return () => sub.unsubscribe();
+    });
   }
 
   setMode(mode: ThemeMode): void {
@@ -128,4 +138,18 @@ export class ParametersPage {
     this.folderFilterConfig.set(this.folderFilterService.getConfig());
     this.showToast('Folder filters reset to defaults');
   }
+
+  toggleBackups(): void {
+    const next = !this.backupsEnabled();
+    this.settingsService.updateBackups(next).subscribe((res) => {
+      this.backupsEnabled.set(res.enableBackups);
+      if (!res.enableBackups && (res.deletedBakFiles ?? 0) > 0) {
+        this.showToast(`Backups disabled. Deleted ${res.deletedBakFiles} .bak files`);
+      } else if (!res.enableBackups) {
+        this.showToast('Backups disabled');
+      } else {
+        this.showToast('Backups enabled');
+      }
+    });
+  }
 }

src/app/services/settings.service.ts

@@ -0,0 +1,26 @@
+import { Injectable, inject } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { Observable, map } from 'rxjs';
+
+export interface AppSettings {
+  enableBackups: boolean;
+}
+
+@Injectable({ providedIn: 'root' })
+export class SettingsService {
+  private http = inject(HttpClient);
+
+  getSettings(): Observable<AppSettings> {
+    return this.http.get<AppSettings>('/api/settings').pipe(
+      map((res) => ({ enableBackups: res?.enableBackups !== false }))
+    );
+  }
+
+  updateBackups(enableBackups: boolean): Observable<{ success: boolean; enableBackups: boolean; deletedBakFiles?: number }>
+  {
+    return this.http.put<{ success: boolean; enableBackups: boolean; deletedBakFiles?: number }>(
+      '/api/settings',
+      { enableBackups }
+    );
+  }
+}

vault/.obsidian/bookmarks.json.bak

@@ -1,24 +0,0 @@
-{
-  "items": [
-    {
-      "type": "group",
-      "ctime": 1759433919563,
-      "title": "test",
-      "items": [
-        {
-          "type": "file",
-          "ctime": 1759433952208,
-          "path": "HOME.md",
-          "title": "HOME"
-        }
-      ]
-    },
-    {
-      "type": "file",
-      "ctime": 1759434060575,
-      "path": "test.md",
-      "title": "Page de test Markdown"
-    }
-  ],
-  "rev": "9mgl-40"
-}

vault/.obsidian/graph.json.bak

@@ -1,22 +0,0 @@
-{
-  "collapse-filter": false,
-  "search": "",
-  "showTags": false,
-  "showAttachments": false,
-  "hideUnresolved": false,
-  "showOrphans": true,
-  "collapse-color-groups": false,
-  "colorGroups": [],
-  "collapse-display": false,
-  "showArrow": false,
-  "textFadeMultiplier": 0,
-  "nodeSizeMultiplier": 1,
-  "lineSizeMultiplier": 1,
-  "collapse-forces": false,
-  "centerStrength": 0.3,
-  "repelStrength": 17,
-  "linkStrength": 0.5,
-  "linkDistance": 200,
-  "scale": 1,
-  "close": false
-}

vault/.obsidian/obsiviewer.json

@@ -0,0 +1,3 @@
+{
+  "enableBackups": false
+}

vault/.obsidian/workspace.json

@@ -178,10 +178,10 @@
   },
   "active": "8309e5042a8fb85c",
   "lastOpenFiles": [
+    "dessin.excalidraw.md",
     "Dessin-02.png",
     "mixe/Relaxing Music relax music music _hls-480_.mp4",
     "Dessin-02.excalidraw.md",
-    "dessin.excalidraw.md",
     "Drawing-20251028-1452.excalidraw.md",
     "Dessin-02.excalidraw.md.tmp",
     "Dessin-02.excalidraw.md.bak",

vault/.trash/archive/archived-note.md.bak

@@ -1,25 +0,0 @@
----
-titre: archived-note
-auteur: Bruno Charest
-creation_date: 2025-10-19T11:13:12-04:00
-modification_date: 2025-10-19T12:09:46-04:00
-catégorie: ""
-tags:
-  - bruno
-  - configuration
-aliases: []
-status: en-cours
-publish: true
-favoris: true
-template: true
-task: true
-archive: false
-draft: true
-private: true
----
-# Archived Note
-
-#bruno
-
-
-This note was archived and moved to trash.

vault/.trash/file-5_2025-10-25T20-16-40-755Z.md.bak

@@ -1 +0,0 @@
-nouveau message !!!

vault/.trash/old-folder/old-note-2.md.bak

@@ -1,23 +0,0 @@
----
-titre: old-note-2
-auteur: Bruno Charest
-creation_date: 2025-10-19T11:13:12-04:00
-modification_date: 2025-10-19T12:09:46-04:00
-catégorie: ""
-aliases: []
-status: en-cours
-publish: false
-favoris: false
-template: false
-task: false
-archive: false
-draft: false
-private: false
-tags:
-  - configuration
-  - bruno
-  - markdown
----
-# Old Note 2
-
-This note is in a subfolder of trash.

vault/.trash/old-folder/old-note-3.md.bak

@@ -1,3 +0,0 @@
-# Old Note 3
-
-Another note in the old-folder subfolder.

vault/.trash/old.md.bak

@@ -1,22 +0,0 @@
----
-titre: old
-auteur: Bruno Charest
-creation_date: 2025-10-19T12:28:31-04:00
-modification_date: 2025-10-19T12:28:31-04:00
-catégorie: ""
-tags: []
-aliases: []
-status: en-cours
-publish: false
-favoris: false
-template: false
-task: false
-archive: false
-draft: false
-private: false
----
-
-# Vieux fichier 
-
-## Section 1
-

vault/.trash/test copy/deleted-note-1.md.bak

@@ -1,3 +0,0 @@
-# Deleted Note 1
-
-This is a test note in trash.

vault/.trash/test/deleted-note-1.md.bak

@@ -1,3 +0,0 @@
-# Deleted Note 1
-
-This is a test note in trash.

vault/Allo-3/test-add-properties.md.bak

@@ -1,56 +0,0 @@
----
-titre: "test-add-properties"
-auteur: "Bruno Charest"
-creation_date: "2025-10-23T13:11:50-04:00"
-modification_date: "2025-10-23T13:11:50-04:00"
-aliases: [""]
-status: "en-cours"
-publish: false
-favoris: true
-template: false
-task: true
-archive: false
-draft: false
-private: true
-color: "#22C55E"
-tags:
-  - tag1
-  - accueil
-  - tag3
----
-Allo ceci est un tests
-toto
-
-# Test 1 Markdown
-
-## Titres
-
-# Niveau 1
-#tag1 #tag2 #test #test2
-
-
-# Nouveau-markdown
-
-## sous-titre
-- [ ] allo
-- [ ] toto
-- [ ] tata
-
-## sous-titre 2
-
-#tag1 #tag2 #tag3 #tag4
-
-## sous-titre 3
-
-## sous-titre 4
-
-## sous-titre 5
-test
-
-## sous-titre 6
-test
-
-## sous-titre 7
-test
-
-## sous-titre 8

vault/Allo-3/test-new-file.md.bak

@@ -1,19 +0,0 @@
----
-titre: test-new-file
-auteur: Bruno Charest
-creation_date: 2025-10-19T12:15:21-04:00
-modification_date: 2025-10-19T12:15:21-04:00
-catégorie: ""
-aliases: []
-status: en-cours
-publish: false
-favoris: false
-template: false
-task: false
-archive: false
-draft: false
-private: false
-tags:
-  - home
-  - accueil
----

vault/Allo-3/test/Nouvelle note 3.md.bak

@@ -1,15 +0,0 @@
----
-titre: "Nouvelle note 3"
-auteur: "Bruno Charest"
-creation_date: "2025-10-24T15:44:07.120Z"
-modification_date: "2025-10-24T15:44:07.120Z"
-status: "en-cours"
-publish: false
-favoris: false
-template: false
-task: false
-archive: false
-draft: false
-private: false
----
-

vault/Nouvelle note 16.md.bak

@@ -1,15 +0,0 @@
----
-titre: "Nouvelle note 16"
-auteur: "Bruno Charest"
-creation_date: "2025-10-27T18:01:11.627Z"
-modification_date: "2025-10-27T18:01:11.627Z"
-status: "en-cours"
-publish: false
-favoris: false
-template: false
-task: false
-archive: false
-draft: false
-private: false
----
-

vault/Test Note.md.bak

@@ -1,16 +0,0 @@
----
-titre: "Test Note"
-auteur: "Bruno Charest"
-creation_date: "2025-10-23"
-modification_date: "2025-10-23"
-status: "draft"
-publish: false
-favoris: false
-template: false
-task: false
-archive: false
-draft: true
-private: false
----
-
-Contenu de test

vault/folder-4/Nouvelle note 11.md.bak

@@ -1,15 +0,0 @@
----
-titre: "Nouvelle note 11"
-auteur: "Bruno Charest"
-creation_date: "2025-10-26T14:55:56.550Z"
-modification_date: "2025-10-26T14:55:56.550Z"
-status: "en-cours"
-publish: false
-favoris: false
-template: false
-task: false
-archive: false
-draft: false
-private: false
----
-

vault/folder-4/Nouvelle note 12.md.bak

@@ -1,15 +0,0 @@
----
-titre: "Nouvelle note 12"
-auteur: "Bruno Charest"
-creation_date: "2025-10-26T14:55:57.870Z"
-modification_date: "2025-10-26T14:55:57.870Z"
-status: "en-cours"
-publish: false
-favoris: false
-template: false
-task: false
-archive: false
-draft: false
-private: false
----
-

vault/folder-4/Nouvelle note 7.md.bak

@@ -1,15 +0,0 @@
----
-titre: "Nouvelle note 7"
-auteur: "Bruno Charest"
-creation_date: "2025-10-26T13:17:42.008Z"
-modification_date: "2025-10-26T13:17:42.008Z"
-status: "en-cours"
-publish: false
-favoris: false
-template: false
-task: false
-archive: false
-draft: false
-private: false
----
-

vault/folder-4/Nouvelle note 8.md.bak

@@ -1,15 +0,0 @@
----
-titre: "Nouvelle note 8"
-auteur: "Bruno Charest"
-creation_date: "2025-10-26T14:55:08.540Z"
-modification_date: "2025-10-26T14:55:08.540Z"
-status: "en-cours"
-publish: false
-favoris: false
-template: false
-task: false
-archive: false
-draft: false
-private: false
----
-

vault/folder-4/Nouvelle note 9.md.bak

@@ -1,15 +0,0 @@
----
-titre: "Nouvelle note 9"
-auteur: "Bruno Charest"
-creation_date: "2025-10-26T14:55:54.071Z"
-modification_date: "2025-10-26T14:55:54.071Z"
-status: "en-cours"
-publish: false
-favoris: false
-template: false
-task: false
-archive: false
-draft: false
-private: false
----
-

vault/folder-4/Nouvelle note.md.bak

@@ -1,15 +0,0 @@
----
-titre: "Nouvelle note"
-auteur: "Bruno Charest"
-creation_date: "2025-10-26T13:14:53.395Z"
-modification_date: "2025-10-26T13:14:53.395Z"
-status: "en-cours"
-publish: false
-favoris: false
-template: false
-task: false
-archive: false
-draft: false
-private: false
----
-

vault/folder-4/test-add-properties.md.bak

@@ -1,52 +0,0 @@
----
-titre: "test-add-properties"
-auteur: "Bruno Charest"
-creation_date: "2025-10-23T13:11:50-04:00"
-modification_date: "2025-10-27T15:13:08-04:00"
-status: "en-cours"
-publish: false
-favoris: true
-template: false
-task: true
-archive: false
-draft: false
-private: true
-tags:
-  - tagtag
----
-Allo ceci est un tests
-toto
-
-# Test 1 Markdown
-
-## Titres
-
-# Niveau 1
-#tag1 #tag2 #test #test2
-
-
-# Nouveau-markdown
-
-## sous-titre
-- [ ] allo
-- [ ] toto
-- [ ] tata
-
-## sous-titre 2
-
-#tag1 #tag2 #tag3 #tag4
-
-## sous-titre 3
-
-## sous-titre 4
-
-## sous-titre 5
-test
-
-## sous-titre 6
-test
-
-## sous-titre 7
-test
-
-## sous-titre 8

vault/test-file.md.bak

@@ -1,3 +0,0 @@
-# Test File
-
-This is a test file for API testing.

vault/titi/Nouveau-markdown.md.bak

@@ -1,55 +0,0 @@
----
-titre: "Nouveau-markdown"
-auteur: "Bruno Charest"
-creation_date: "2025-10-19T21:42:53-04:00"
-modification_date: "2025-10-19T21:43:06-04:00"
-status: "en-cours"
-publish: true
-favoris: false
-template: true
-task: true
-archive: true
-draft: true
-private: true
-toto: "tata"
-color: "#EF4444"
----
-Allo ceci est un tests
-toto
-
-# Test 1 Markdown
-
-## Titres
-
-# Niveau 1
-#tag1 #tag2 #test #test2
-
-
-# Nouveau-markdown
-
-## sous-titre
-- [ ] allo
-- [ ] toto
-- [ ] tata
-
-## sous-titre 2
-
-#tag1 #tag2 #tag3 #tag4
-
-## sous-titre 3
-
-## sous-titre 4
-
-## sous-titre 5
-test
-
-## sous-titre 6
-test
-
-## sous-titre 7
-test
-
-## sous-titre 8
-
-
-

vault/toto/Nouvelle note 2.md.bak

@@ -1,15 +0,0 @@
----
-titre: "Nouvelle note 2"
-auteur: "Bruno Charest"
-creation_date: "2025-10-24T12:24:03.706Z"
-modification_date: "2025-10-24T12:24:03.706Z"
-status: "en-cours"
-publish: false
-favoris: false
-template: false
-task: false
-archive: false
-draft: false
-private: false
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-