fix(audit): nettoyage accès, garde-fous build, unification quotas

Semaine 1 — fuites et accès :
- /archive rendu accessible via sidebar (était invisible)
- Suppression pages orphelines : /chat, /graph, /support, test-title-suggestions
- Fixes i18n : search-modal (clé non interpolée), sidebar tooltips, export PDF
- 15 locales mises à jour

Semaine 2 — garde-fous :
- 8 erreurs TS fixees → ignoreBuildErrors: false (build type-safe)
- reactStrictMode: true (dev-only, zero impact prod)
- reserveUsageOrThrow → wrapper deprecie vers reserveAiUsageOrThrow
- auth-guard.ts : requireAuthOrResponse() + requireAdminOrResponse()

Tests 212/212 | Lint 0 erreur | Build OK | tsc 0 erreur

memento-note/locales/ar.json

@@ -3318,10 +3318,8 @@
         "title": "الحساب",
         "link0": "تسجيل الدخول",
         "link1": "إنشاء حساب",
-        "link2": "الدعم",
         "link0Href": "/login",
-        "link1Href": "/register",
-        "link2Href": "/support"
+        "link1Href": "/register"
       },
       "legal": {
         "title": "قانوني",
@@ -3685,7 +3683,8 @@
     "typeForResults": "اكتب للحصول على نتائج فورية.",
     "hintNavigate": "تنقل",
     "hintOpen": "فتح",
-    "hintClose": "إغلاق"
+    "hintClose": "إغلاق",
+    "selectResultToPreview": "Select a result to explore its content."
   },
   "quotaPaywall": {
     "title": "تم الوصول إلى الحد الشهري",

memento-note/locales/de.json

@@ -3318,10 +3318,8 @@
         "title": "Konto",
         "link0": "Anmelden",
         "link1": "Registrieren",
-        "link2": "Support",
         "link0Href": "/login",
-        "link1Href": "/register",
-        "link2Href": "/support"
+        "link1Href": "/register"
       },
       "legal": {
         "title": "Rechtliches",
@@ -3685,7 +3683,8 @@
     "typeForResults": "Tippen für sofortige Ergebnisse.",
     "hintNavigate": "navigieren",
     "hintOpen": "öffnen",
-    "hintClose": "schließen"
+    "hintClose": "schließen",
+    "selectResultToPreview": "Select a result to explore its content."
   },
   "quotaPaywall": {
     "title": "Monatliches Limit erreicht",

memento-note/locales/en.json

@@ -3585,10 +3585,8 @@
         "title": "Account",
         "link0": "Log in",
         "link1": "Sign up",
-        "link2": "Support",
         "link0Href": "/login",
-        "link1Href": "/register",
-        "link2Href": "/support"
+        "link1Href": "/register"
       },
       "legal": {
         "title": "Legal",
@@ -4492,7 +4490,8 @@
     "typeForResults": "Type for instant results.",
     "hintNavigate": "navigate",
     "hintOpen": "open",
-    "hintClose": "close"
+    "hintClose": "close",
+    "selectResultToPreview": "Select a result to explore its content."
   },
   "mobile": {
     "aiNote": "AI Note",

memento-note/locales/es.json

@@ -3318,10 +3318,8 @@
         "title": "Cuenta",
         "link0": "Iniciar sesión",
         "link1": "Registrarse",
-        "link2": "Soporte",
         "link0Href": "/login",
-        "link1Href": "/register",
-        "link2Href": "/support"
+        "link1Href": "/register"
       },
       "legal": {
         "title": "Legal",
@@ -3685,7 +3683,8 @@
     "typeForResults": "Escribe para resultados instantáneos.",
     "hintNavigate": "navegar",
     "hintOpen": "abrir",
-    "hintClose": "cerrar"
+    "hintClose": "cerrar",
+    "selectResultToPreview": "Select a result to explore its content."
   },
   "quotaPaywall": {
     "title": "Límite mensual alcanzado",

memento-note/locales/fa.json

@@ -3318,10 +3318,8 @@
         "title": "حساب",
         "link0": "ورود",
         "link1": "ثبت‌نام",
-        "link2": "پشتیبانی",
         "link0Href": "/login",
-        "link1Href": "/register",
-        "link2Href": "/support"
+        "link1Href": "/register"
       },
       "legal": {
         "title": "حقوقی",
@@ -3685,7 +3683,8 @@
     "typeForResults": "برای نتایج فوری تایپ کنید.",
     "hintNavigate": "پیمایش",
     "hintOpen": "باز کردن",
-    "hintClose": "بستن"
+    "hintClose": "بستن",
+    "selectResultToPreview": "Select a result to explore its content."
   },
   "quotaPaywall": {
     "title": "محدودیت ماهانه رسید",

memento-note/locales/fr.json

@@ -3591,10 +3591,8 @@
         "title": "Compte",
         "link0": "Se connecter",
         "link1": "S'inscrire",
-        "link2": "Support",
         "link0Href": "/login",
-        "link1Href": "/register",
-        "link2Href": "/support"
+        "link1Href": "/register"
       },
       "legal": {
         "title": "Légal",
@@ -4498,7 +4496,8 @@
     "typeForResults": "Tapez pour des résultats instantanés.",
     "hintNavigate": "naviguer",
     "hintOpen": "ouvrir",
-    "hintClose": "fermer"
+    "hintClose": "fermer",
+    "selectResultToPreview": "Sélectionnez un résultat pour explorer son contenu."
   },
   "mobile": {
     "aiNote": "IA Note",

memento-note/locales/hi.json

@@ -3318,10 +3318,8 @@
         "title": "खाता",
         "link0": "लॉग इन",
         "link1": "साइन अप",
-        "link2": "सपोर्ट",
         "link0Href": "/login",
-        "link1Href": "/register",
-        "link2Href": "/support"
+        "link1Href": "/register"
       },
       "legal": {
         "title": "कानूनी",
@@ -3685,7 +3683,8 @@
     "typeForResults": "तत्काल परिणाम के लिए टाइप करें।",
     "hintNavigate": "नेविगेट",
     "hintOpen": "खोलें",
-    "hintClose": "बंद करें"
+    "hintClose": "बंद करें",
+    "selectResultToPreview": "Select a result to explore its content."
   },
   "quotaPaywall": {
     "title": "मासिक सीमा पहुँची",

memento-note/locales/it.json

@@ -3318,10 +3318,8 @@
         "title": "Account",
         "link0": "Accedi",
         "link1": "Registrati",
-        "link2": "Supporto",
         "link0Href": "/login",
-        "link1Href": "/register",
-        "link2Href": "/support"
+        "link1Href": "/register"
       },
       "legal": {
         "title": "Legale",
@@ -3685,7 +3683,8 @@
     "typeForResults": "Digita per risultati immediati.",
     "hintNavigate": "navigare",
     "hintOpen": "aprire",
-    "hintClose": "chiudere"
+    "hintClose": "chiudere",
+    "selectResultToPreview": "Select a result to explore its content."
   },
   "quotaPaywall": {
     "title": "Limite mensile raggiunto",

memento-note/locales/ja.json

@@ -3318,10 +3318,8 @@
         "title": "アカウント",
         "link0": "ログイン",
         "link1": "登録",
-        "link2": "サポート",
         "link0Href": "/login",
-        "link1Href": "/register",
-        "link2Href": "/support"
+        "link1Href": "/register"
       },
       "legal": {
         "title": "法務",
@@ -3685,7 +3683,8 @@
     "typeForResults": "入力で即座に結果表示。",
     "hintNavigate": "移動",
     "hintOpen": "開く",
-    "hintClose": "閉じる"
+    "hintClose": "閉じる",
+    "selectResultToPreview": "Select a result to explore its content."
   },
   "quotaPaywall": {
     "title": "月制限に達しました",

memento-note/locales/ko.json

@@ -3318,10 +3318,8 @@
         "title": "계정",
         "link0": "로그인",
         "link1": "가입",
-        "link2": "지원",
         "link0Href": "/login",
-        "link1Href": "/register",
-        "link2Href": "/support"
+        "link1Href": "/register"
       },
       "legal": {
         "title": "법률",
@@ -3685,7 +3683,8 @@
     "typeForResults": "입력하여 즉시 결과 표시.",
     "hintNavigate": "탐색",
     "hintOpen": "열기",
-    "hintClose": "닫기"
+    "hintClose": "닫기",
+    "selectResultToPreview": "Select a result to explore its content."
   },
   "quotaPaywall": {
     "title": "월별 한도에 도달했습니다",

memento-note/locales/nl.json

@@ -3318,10 +3318,8 @@
         "title": "Account",
         "link0": "Inloggen",
         "link1": "Registreren",
-        "link2": "Support",
         "link0Href": "/login",
-        "link1Href": "/register",
-        "link2Href": "/support"
+        "link1Href": "/register"
       },
       "legal": {
         "title": "Juridisch",
@@ -3685,7 +3683,8 @@
     "typeForResults": "Typ voor directe resultaten.",
     "hintNavigate": "navigeren",
     "hintOpen": "openen",
-    "hintClose": "sluiten"
+    "hintClose": "sluiten",
+    "selectResultToPreview": "Select a result to explore its content."
   },
   "quotaPaywall": {
     "title": "Maandelijkse limiet bereikt",

memento-note/locales/pl.json

@@ -3318,10 +3318,8 @@
         "title": "Konto",
         "link0": "Zaloguj się",
         "link1": "Zarejestruj się",
-        "link2": "Wsparcie",
         "link0Href": "/login",
-        "link1Href": "/register",
-        "link2Href": "/support"
+        "link1Href": "/register"
       },
       "legal": {
         "title": "Prawne",
@@ -3685,7 +3683,8 @@
     "typeForResults": "Zacznij pisać dla natychmiastowych wyników.",
     "hintNavigate": "nawiguj",
     "hintOpen": "otwórz",
-    "hintClose": "zamknij"
+    "hintClose": "zamknij",
+    "selectResultToPreview": "Select a result to explore its content."
   },
   "quotaPaywall": {
     "title": "Osiągnięto miesięczny limit",

memento-note/locales/pt.json

@@ -3318,10 +3318,8 @@
         "title": "Conta",
         "link0": "Entrar",
         "link1": "Cadastrar",
-        "link2": "Suporte",
         "link0Href": "/login",
-        "link1Href": "/register",
-        "link2Href": "/support"
+        "link1Href": "/register"
       },
       "legal": {
         "title": "Legal",
@@ -3685,7 +3683,8 @@
     "typeForResults": "Digite para resultados instantâneos.",
     "hintNavigate": "navegar",
     "hintOpen": "abrir",
-    "hintClose": "fechar"
+    "hintClose": "fechar",
+    "selectResultToPreview": "Select a result to explore its content."
   },
   "quotaPaywall": {
     "title": "Limite mensal atingido",

memento-note/locales/ru.json

@@ -3318,10 +3318,8 @@
         "title": "Аккаунт",
         "link0": "Войти",
         "link1": "Регистрация",
-        "link2": "Поддержка",
         "link0Href": "/login",
-        "link1Href": "/register",
-        "link2Href": "/support"
+        "link1Href": "/register"
       },
       "legal": {
         "title": "Правовое",
@@ -3685,7 +3683,8 @@
     "typeForResults": "Введите для мгновенных результатов.",
     "hintNavigate": "навигация",
     "hintOpen": "открыть",
-    "hintClose": "закрыть"
+    "hintClose": "закрыть",
+    "selectResultToPreview": "Select a result to explore its content."
   },
   "quotaPaywall": {
     "title": "Достигнут месячный лимит",

memento-note/locales/zh.json

@@ -3318,10 +3318,8 @@
         "title": "账户",
         "link0": "登录",
         "link1": "注册",
-        "link2": "支持",
         "link0Href": "/login",
-        "link1Href": "/register",
-        "link2Href": "/support"
+        "link1Href": "/register"
       },
       "legal": {
         "title": "法律",
@@ -3685,7 +3683,8 @@
     "typeForResults": "输入获取即时结果。",
     "hintNavigate": "导航",
     "hintOpen": "打开",
-    "hintClose": "关闭"
+    "hintClose": "关闭",
+    "selectResultToPreview": "Select a result to explore its content."
   },
   "quotaPaywall": {
     "title": "已达到月度限制",