feat: 8 AI providers, rich text editor, agent notifications, UI contrast & font settings

- Add DeepSeek, OpenRouter, Mistral, Z.AI, LM Studio as AI providers
  with editable model names via Combobox in admin settings
- Fix OpenRouter broken by normalizeProvider bug in config.ts
- Convert agent-created notes from Markdown to HTML (TipTap rich text)
- Add Notification model + in-app notifications for agent results
- Agent notification click opens the created note directly
- Add note count display on notebook and inbox headers
- Fix checklist toggle in card view (persist state via localCheckItems)
- Add checklist creation option in tabs/list view (dropdown on + button)
- Fix image description ENOENT error with HTTP fallback
- Improve UI contrast across all themes (input, border, checkbox visibility)
- Add font family setting (Inter vs System Default) in Appearance settings
- Fix CSS font-sans variable conflict (removed dead Geist references)
- Update README with new features and 8 providers

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

memento-note/locales/ar.json

@@ -837,6 +837,11 @@
       "providerOllamaOption": "🦙 Ollama (Local & Free)",
       "providerOpenAIOption": "🤖 OpenAI (GPT-5, GPT-4)",
       "providerCustomOption": "🔧 Custom OpenAI-Compatible",
+      "providerDeepSeekOption": "🔍 DeepSeek",
+      "providerOpenRouterOption": "🌐 OpenRouter",
+      "providerMistralOption": "🌀 Mistral AI",
+      "providerZAIOption": "✨ Z.AI",
+      "providerLMStudioOption": "🖥️ LM Studio (محلي)",
       "bestValue": "أفضل قيمة",
       "bestQuality": "أفضل جودة",
       "saved": "(تم الحفظ)",
@@ -1175,7 +1180,11 @@
     "notesViewLabel": "عرض الملاحظات",
     "notesViewTabs": "علامات تبويب (نمط OneNote)",
     "notesViewMasonry": "بطاقات (شبكة)",
-    "selectTheme": "Select theme"
+    "selectTheme": "Select theme",
+    "fontFamilyLabel": "عائلة الخطوط",
+    "fontFamilyDescription": "اختر الخط المستخدم في جميع أنحاء التطبيق",
+    "selectFontFamily": "Inter مُحسّن لسهولة القراءة، النظام يستخدم الخط الأصلي لنظام التشغيل",
+    "fontSystem": "الخط الافتراضي للنظام"
   },
   "generalSettings": {
     "title": "الإعدادات العامة",

memento-note/locales/de.json

@@ -837,6 +837,11 @@
       "providerOllamaOption": "🦙 Ollama (Local & Free)",
       "providerOpenAIOption": "🤖 OpenAI (GPT-5, GPT-4)",
       "providerCustomOption": "🔧 Custom OpenAI-Compatible",
+      "providerDeepSeekOption": "🔍 DeepSeek",
+      "providerOpenRouterOption": "🌐 OpenRouter",
+      "providerMistralOption": "🌀 Mistral AI",
+      "providerZAIOption": "✨ Z.AI",
+      "providerLMStudioOption": "🖥️ LM Studio (Lokal)",
       "bestValue": "Bestes Preis-Leistungs-Verhältnis",
       "bestQuality": "Beste Qualität",
       "saved": "(Gespeichert)",
@@ -1175,7 +1180,11 @@
     "notesViewLabel": "Notizen-Ansicht",
     "notesViewTabs": "Tabs (OneNote-Stil)",
     "notesViewMasonry": "Karten (Raster)",
-    "selectTheme": "Select theme"
+    "selectTheme": "Select theme",
+    "fontFamilyLabel": "Schriftfamilie",
+    "fontFamilyDescription": "Wählen Sie die im gesamten Programm verwendete Schriftart",
+    "selectFontFamily": "Inter ist für Lesbarkeit optimiert, System verwendet die native Schriftart Ihres Betriebssystems",
+    "fontSystem": "Standardsystemschriftart"
   },
   "generalSettings": {
     "title": "Allgemeine Einstellungen",

memento-note/locales/en.json

@@ -841,6 +841,11 @@
       "providerOllamaOption": "🦙 Ollama (Local & Free)",
       "providerOpenAIOption": "🤖 OpenAI (GPT-5, GPT-4)",
       "providerCustomOption": "🔧 Custom OpenAI-Compatible",
+      "providerDeepSeekOption": "🔍 DeepSeek",
+      "providerOpenRouterOption": "🌐 OpenRouter",
+      "providerMistralOption": "🌀 Mistral AI",
+      "providerZAIOption": "✨ Z.AI",
+      "providerLMStudioOption": "🖥️ LM Studio (Local)",
       "bestValue": "Best value",
       "bestQuality": "Best quality",
       "saved": "(Saved)",
@@ -1179,7 +1184,11 @@
     "notesViewLabel": "Notes layout",
     "notesViewTabs": "Tabs (OneNote-style)",
     "notesViewMasonry": "Cards (grid)",
-    "selectTheme": "Select theme"
+    "selectTheme": "Select theme",
+    "fontFamilyLabel": "Font Family",
+    "fontFamilyDescription": "Choose the font used throughout the app",
+    "selectFontFamily": "Inter is optimized for readability, System uses your OS native font",
+    "fontSystem": "System Default"
   },
   "generalSettings": {
     "title": "General Settings",

memento-note/locales/es.json

@@ -837,6 +837,11 @@
       "providerOllamaOption": "🦙 Ollama (Local & Free)",
       "providerOpenAIOption": "🤖 OpenAI (GPT-5, GPT-4)",
       "providerCustomOption": "🔧 Custom OpenAI-Compatible",
+      "providerDeepSeekOption": "🔍 DeepSeek",
+      "providerOpenRouterOption": "🌐 OpenRouter",
+      "providerMistralOption": "🌀 Mistral AI",
+      "providerZAIOption": "✨ Z.AI",
+      "providerLMStudioOption": "🖥️ LM Studio (Local)",
       "bestValue": "Mejor relación calidad/precio",
       "bestQuality": "Mejor calidad",
       "saved": "(Guardado)",
@@ -1175,7 +1180,11 @@
     "notesViewLabel": "Vista de notas",
     "notesViewTabs": "Pestañas (estilo OneNote)",
     "notesViewMasonry": "Tarjetas (cuadrícula)",
-    "selectTheme": "Select theme"
+    "selectTheme": "Select theme",
+    "fontFamilyLabel": "Familia de fuentes",
+    "fontFamilyDescription": "Elige la fuente utilizada en toda la aplicación",
+    "selectFontFamily": "Inter está optimizado para la legibilidad, Sistema usa la fuente nativa de tu sistema operativo",
+    "fontSystem": "Fuente del sistema predeterminada"
   },
   "generalSettings": {
     "title": "Configuración general",

memento-note/locales/fa.json

@@ -837,6 +837,11 @@
       "providerOllamaOption": "🦙 Ollama (محلی و رایگان)",
       "providerOpenAIOption": "🤖 OpenAI (GPT-5, GPT-4)",
       "providerCustomOption": "🔧 سفارشی سازگار با OpenAI",
+      "providerDeepSeekOption": "🔍 DeepSeek",
+      "providerOpenRouterOption": "🌐 OpenRouter",
+      "providerMistralOption": "🌀 Mistral AI",
+      "providerZAIOption": "✨ Z.AI",
+      "providerLMStudioOption": "🖥️ LM Studio (محلی)",
       "bestValue": "بهترین ارزش",
       "bestQuality": "بهترین کیفیت",
       "saved": "(ذخیره شد)",
@@ -1175,7 +1180,11 @@
     "notesViewLabel": "چیدمان یادداشت‌ها",
     "notesViewTabs": "زبانه‌ها (سبک OneNote)",
     "notesViewMasonry": "کارت‌ها (شبکه‌ای)",
-    "selectTheme": "Select theme"
+    "selectTheme": "Select theme",
+    "fontFamilyLabel": "خانواده فونت",
+    "fontFamilyDescription": "فونت استفاده شده در سراسر برنامه را انتخاب کنید",
+    "selectFontFamily": "Inter برای خوانایی بهینه شده است، سیستم از فونت بومی سیستم‌عامل شما استفاده می‌کند",
+    "fontSystem": "فونت پیش‌فرض سیستم"
   },
   "generalSettings": {
     "title": "تنظیمات عمومی",

memento-note/locales/fr.json

@@ -841,6 +841,11 @@
       "providerOllamaOption": "🦙 Ollama (Local & Gratuit)",
       "providerOpenAIOption": "🤖 OpenAI (GPT-5, GPT-4)",
       "providerCustomOption": "🔧 Custom Compatible OpenAI",
+      "providerDeepSeekOption": "🔍 DeepSeek",
+      "providerOpenRouterOption": "🌐 OpenRouter",
+      "providerMistralOption": "🌀 Mistral AI",
+      "providerZAIOption": "✨ Z.AI",
+      "providerLMStudioOption": "🖥️ LM Studio (Local)",
       "bestValue": "Meilleur rapport qualité/prix",
       "bestQuality": "Meilleure qualité",
       "saved": "(Enregistré)",
@@ -1179,7 +1184,11 @@
     "notesViewLabel": "Affichage des notes",
     "notesViewTabs": "Onglets (type OneNote)",
     "notesViewMasonry": "Cartes (grille)",
-    "selectTheme": "Sélectionner le thème"
+    "selectTheme": "Sélectionner le thème",
+    "fontFamilyLabel": "Famille de polices",
+    "fontFamilyDescription": "Choisissez la police utilisée dans toute l'application",
+    "selectFontFamily": "Inter est optimisé pour la lisibilité, Système utilise la police native de votre système d'exploitation",
+    "fontSystem": "Police système par défaut"
   },
   "generalSettings": {
     "title": "Paramètres généraux",

memento-note/locales/hi.json

@@ -837,6 +837,11 @@
       "providerOllamaOption": "🦙 Ollama (Local & Free)",
       "providerOpenAIOption": "🤖 OpenAI (GPT-5, GPT-4)",
       "providerCustomOption": "🔧 Custom OpenAI-Compatible",
+      "providerDeepSeekOption": "🔍 DeepSeek",
+      "providerOpenRouterOption": "🌐 OpenRouter",
+      "providerMistralOption": "🌀 Mistral AI",
+      "providerZAIOption": "✨ Z.AI",
+      "providerLMStudioOption": "🖥️ LM Studio (स्थानीय)",
       "bestValue": "सर्वोत्तम मूल्य",
       "bestQuality": "सर्वोत्तम गुणवत्ता",
       "saved": "(सहेजा गया)",
@@ -1175,7 +1180,11 @@
     "notesViewLabel": "नोट्स दृश्य",
     "notesViewTabs": "टैब (OneNote-शैली)",
     "notesViewMasonry": "कार्ड (ग्रिड)",
-    "selectTheme": "Select theme"
+    "selectTheme": "Select theme",
+    "fontFamilyLabel": "फ़ॉन्ट परिवार",
+    "fontFamilyDescription": "पूरे ऐप में उपयोग किए जाने वाले फ़ॉन्ट का चयन करें",
+    "selectFontFamily": "Inter पठनीयता के लिए अनुकूलित है, सिस्टम आपके OS के मूल फ़ॉन्ट का उपयोग करता है",
+    "fontSystem": "सिस्टम डिफ़ॉल्ट"
   },
   "generalSettings": {
     "title": "सामान्य सेटिंग्स",

memento-note/locales/it.json

@@ -837,6 +837,11 @@
       "providerOllamaOption": "🦙 Ollama (Local & Free)",
       "providerOpenAIOption": "🤖 OpenAI (GPT-5, GPT-4)",
       "providerCustomOption": "🔧 Custom OpenAI-Compatible",
+      "providerDeepSeekOption": "🔍 DeepSeek",
+      "providerOpenRouterOption": "🌐 OpenRouter",
+      "providerMistralOption": "🌀 Mistral AI",
+      "providerZAIOption": "✨ Z.AI",
+      "providerLMStudioOption": "🖥️ LM Studio (Locale)",
       "bestValue": "Miglior rapporto qualità/prezzo",
       "bestQuality": "Miglior qualità",
       "saved": "(Salvato)",
@@ -1175,7 +1180,11 @@
     "notesViewLabel": "Vista note",
     "notesViewTabs": "Schede (stile OneNote)",
     "notesViewMasonry": "Schede (griglia)",
-    "selectTheme": "Select theme"
+    "selectTheme": "Select theme",
+    "fontFamilyLabel": "Famiglia di caratteri",
+    "fontFamilyDescription": "Scegli il carattere utilizzato in tutta l'app",
+    "selectFontFamily": "Inter è ottimizzato per la leggibilità, Sistema usa il carattere nativo del tuo sistema operativo",
+    "fontSystem": "Carattere predefinito di sistema"
   },
   "generalSettings": {
     "title": "Impostazioni generali",

memento-note/locales/ja.json

@@ -837,6 +837,11 @@
       "providerOllamaOption": "🦙 Ollama (Local & Free)",
       "providerOpenAIOption": "🤖 OpenAI (GPT-5, GPT-4)",
       "providerCustomOption": "🔧 Custom OpenAI-Compatible",
+      "providerDeepSeekOption": "🔍 DeepSeek",
+      "providerOpenRouterOption": "🌐 OpenRouter",
+      "providerMistralOption": "🌀 Mistral AI",
+      "providerZAIOption": "✨ Z.AI",
+      "providerLMStudioOption": "🖥️ LM Studio (ローカル)",
       "bestValue": "最もコスパが良い",
       "bestQuality": "最高品質",
       "saved": "(保存済み)",
@@ -1175,7 +1180,11 @@
     "notesViewLabel": "ノートのレイアウト",
     "notesViewTabs": "タブ（OneNote風）",
     "notesViewMasonry": "カード（グリッド）",
-    "selectTheme": "Select theme"
+    "selectTheme": "Select theme",
+    "fontFamilyLabel": "フォントファミリー",
+    "fontFamilyDescription": "アプリ全体で使用するフォントを選択してください",
+    "selectFontFamily": "Inter は読みやすさに最適化されています。システムはOSのネイティブフォントを使用します",
+    "fontSystem": "システムデフォルト"
   },
   "generalSettings": {
     "title": "一般設定",

memento-note/locales/ko.json

@@ -837,6 +837,11 @@
       "providerOllamaOption": "🦙 Ollama (로컬 및 무료)",
       "providerOpenAIOption": "🤖 OpenAI (GPT-5, GPT-4)",
       "providerCustomOption": "🔧 사용자 정의 OpenAI 호환",
+      "providerDeepSeekOption": "🔍 DeepSeek",
+      "providerOpenRouterOption": "🌐 OpenRouter",
+      "providerMistralOption": "🌀 Mistral AI",
+      "providerZAIOption": "✨ Z.AI",
+      "providerLMStudioOption": "🖥️ LM Studio (로컬)",
       "bestValue": "최고 가성비",
       "bestQuality": "최고 품질",
       "saved": "(저장됨)",
@@ -1175,7 +1180,11 @@
     "notesViewLabel": "메모 레이아웃",
     "notesViewTabs": "탭 (OneNote 스타일)",
     "notesViewMasonry": "카드 (그리드)",
-    "selectTheme": "Select theme"
+    "selectTheme": "Select theme",
+    "fontFamilyLabel": "글꼴 패밀리",
+    "fontFamilyDescription": "앱 전체에서 사용할 글꼴을 선택하세요",
+    "selectFontFamily": "Inter는 가독성에 최적화되어 있으며, 시스템은 OS 기본 글꼴을 사용합니다",
+    "fontSystem": "시스템 기본 글꼴"
   },
   "generalSettings": {
     "title": "일반 설정",

memento-note/locales/nl.json

@@ -837,6 +837,11 @@
       "providerOllamaOption": "🦙 Ollama (Local & Free)",
       "providerOpenAIOption": "🤖 OpenAI (GPT-5, GPT-4)",
       "providerCustomOption": "🔧 Custom OpenAI-Compatible",
+      "providerDeepSeekOption": "🔍 DeepSeek",
+      "providerOpenRouterOption": "🌐 OpenRouter",
+      "providerMistralOption": "🌀 Mistral AI",
+      "providerZAIOption": "✨ Z.AI",
+      "providerLMStudioOption": "🖥️ LM Studio (Lokaal)",
       "bestValue": "Beste prijs-kwaliteit",
       "bestQuality": "Beste kwaliteit",
       "saved": "(Opgeslagen)",
@@ -1175,7 +1180,11 @@
     "notesViewLabel": "Notities weergave",
     "notesViewTabs": "Tabbladen (OneNote-stijl)",
     "notesViewMasonry": "Kaarten (raster)",
-    "selectTheme": "Select theme"
+    "selectTheme": "Select theme",
+    "fontFamilyLabel": "Lettertypefamilie",
+    "fontFamilyDescription": "Kies het lettertype dat in de hele app wordt gebruikt",
+    "selectFontFamily": "Inter is geoptimaliseerd voor leesbaarheid, Systeem gebruikt het native lettertype van uw besturingssysteem",
+    "fontSystem": "Standaard systeemlettertype"
   },
   "generalSettings": {
     "title": "Algemene instellingen",

memento-note/locales/pl.json

@@ -837,6 +837,11 @@
       "providerOllamaOption": "🦙 Ollama (lokalny i darmowy)",
       "providerOpenAIOption": "🤖 OpenAI (GPT-5, GPT-4)",
       "providerCustomOption": "🔧 Niestandardowy (kompatybilny z OpenAI)",
+      "providerDeepSeekOption": "🔍 DeepSeek",
+      "providerOpenRouterOption": "🌐 OpenRouter",
+      "providerMistralOption": "🌀 Mistral AI",
+      "providerZAIOption": "✨ Z.AI",
+      "providerLMStudioOption": "🖥️ LM Studio (Lokalny)",
       "bestValue": "Najlepszy stosunek jakości do ceny",
       "bestQuality": "Najwyższa jakość",
       "saved": "(Zapisano)",
@@ -1175,7 +1180,11 @@
     "notesViewLabel": "Układ notatek",
     "notesViewTabs": "Karty (styl OneNote)",
     "notesViewMasonry": "Karty (siatka)",
-    "selectTheme": "Select theme"
+    "selectTheme": "Select theme",
+    "fontFamilyLabel": "Rodzina czcionek",
+    "fontFamilyDescription": "Wybierz czcionkę używaną w całej aplikacji",
+    "selectFontFamily": "Inter jest zoptymalizowany pod kątem czytelności, Systemowa używa natywnej czcionki systemu operacyjnego",
+    "fontSystem": "Domyślna czcionka systemowa"
   },
   "generalSettings": {
     "title": "Ustawienia ogólne",

memento-note/locales/pt.json

@@ -837,6 +837,11 @@
       "providerOllamaOption": "🦙 Ollama (Local e Gratuito)",
       "providerOpenAIOption": "🤖 OpenAI (GPT-5, GPT-4)",
       "providerCustomOption": "🔧 Compatível com OpenAI (Personalizado)",
+      "providerDeepSeekOption": "🔍 DeepSeek",
+      "providerOpenRouterOption": "🌐 OpenRouter",
+      "providerMistralOption": "🌀 Mistral AI",
+      "providerZAIOption": "✨ Z.AI",
+      "providerLMStudioOption": "🖥️ LM Studio (Local)",
       "bestValue": "Melhor custo-benefício",
       "bestQuality": "Melhor qualidade",
       "saved": "(Salvo)",
@@ -1175,7 +1180,11 @@
     "notesViewLabel": "Layout das notas",
     "notesViewTabs": "Abas (estilo OneNote)",
     "notesViewMasonry": "Cartões (grade)",
-    "selectTheme": "Select theme"
+    "selectTheme": "Select theme",
+    "fontFamilyLabel": "Família de fontes",
+    "fontFamilyDescription": "Escolha a fonte usada em todo o aplicativo",
+    "selectFontFamily": "Inter é otimizado para legibilidade, Sistema usa a fonte nativa do seu sistema operacional",
+    "fontSystem": "Fonte padrão do sistema"
   },
   "generalSettings": {
     "title": "Configurações gerais",

memento-note/locales/ru.json

@@ -837,6 +837,11 @@
       "providerOllamaOption": "🦙 Ollama (Локальный и бесплатный)",
       "providerOpenAIOption": "🤖 OpenAI (GPT-5, GPT-4)",
       "providerCustomOption": "🔧 Пользовательский (совместимый с OpenAI)",
+      "providerDeepSeekOption": "🔍 DeepSeek",
+      "providerOpenRouterOption": "🌐 OpenRouter",
+      "providerMistralOption": "🌀 Mistral AI",
+      "providerZAIOption": "✨ Z.AI",
+      "providerLMStudioOption": "🖥️ LM Studio (Локальный)",
       "bestValue": "Лучшее соотношение цена/качество",
       "bestQuality": "Лучшее качество",
       "saved": "(Сохранено)",
@@ -1175,7 +1180,11 @@
     "notesViewLabel": "Макет заметок",
     "notesViewTabs": "Вкладки (в стиле OneNote)",
     "notesViewMasonry": "Карточки (сетка)",
-    "selectTheme": "Select theme"
+    "selectTheme": "Select theme",
+    "fontFamilyLabel": "Семейство шрифтов",
+    "fontFamilyDescription": "Выберите шрифт, используемый во всём приложении",
+    "selectFontFamily": "Inter оптимизирован для читаемости, Системный использует нативный шрифт вашей ОС",
+    "fontSystem": "Системный шрифт по умолчанию"
   },
   "generalSettings": {
     "title": "Общие настройки",

memento-note/locales/zh.json

@@ -837,6 +837,11 @@
       "providerOllamaOption": "🦙 Ollama (Local & Free)",
       "providerOpenAIOption": "🤖 OpenAI (GPT-5, GPT-4)",
       "providerCustomOption": "🔧 Custom OpenAI-Compatible",
+      "providerDeepSeekOption": "🔍 DeepSeek",
+      "providerOpenRouterOption": "🌐 OpenRouter",
+      "providerMistralOption": "🌀 Mistral AI",
+      "providerZAIOption": "✨ Z.AI",
+      "providerLMStudioOption": "🖥️ LM Studio (本地)",
       "bestValue": "最佳性价比",
       "bestQuality": "最佳质量",
       "saved": "(已保存)",
@@ -1175,7 +1180,11 @@
     "notesViewLabel": "笔记布局",
     "notesViewTabs": "标签页（OneNote 风格）",
     "notesViewMasonry": "卡片（网格）",
-    "selectTheme": "Select theme"
+    "selectTheme": "Select theme",
+    "fontFamilyLabel": "字体系列",
+    "fontFamilyDescription": "选择应用程序中使用的字体",
+    "selectFontFamily": "Inter 针对可读性进行了优化，系统使用您操作系统的原生字体",
+    "fontSystem": "系统默认字体"
   },
   "generalSettings": {
     "title": "常规设置",