feat: redirect to AI consent settings when consent is missing

- requestAiConsent now redirects to /settings/general?highlight=aiConsent
  instead of opening the modal when called outside the settings page
- Settings page highlights the consent section and scrolls to it
- Adds consent.ai.settingsBanner i18n key (fr/en)
- Keeps inline modal on /settings/general so the grant button still works

memento-note/components/legal/ai-consent-provider.tsx

@@ -2,7 +2,9 @@
 
 import { createContext, useContext, useState, useEffect, useRef, useCallback } from 'react'
 import { useSession } from 'next-auth/react'
+import { useRouter } from 'next/navigation'
 import { getLocalStorageAiConsent, setLocalStorageAiConsent, removeLocalStorageAiConsent } from '@/lib/consent/ai-consent-client'
+import { redirectToAiConsentSettings } from '@/lib/consent/ai-consent-redirect'
 import { updateAISettings } from '@/app/actions/ai-settings'
 import { AiConsentModal } from './ai-consent-modal'
 import { toast } from 'sonner'
@@ -24,6 +26,7 @@ interface AiConsentProviderProps {
 export function AiConsentProvider({ children, initialPersistentConsent = false }: AiConsentProviderProps) {
   const { data: session, update: updateSession } = useSession()
   const { t } = useLanguage()
+  const router = useRouter()
 
   const [persistentConsent, setPersistentConsent] = useState(false)
   const [sessionConsent, setSessionConsent] = useState(false)
@@ -60,11 +63,22 @@ export function AiConsentProvider({ children, initialPersistentConsent = false }
       return Promise.resolve(true)
     }
 
-    setModalOpen(true)
+    // On settings page we keep the inline modal; elsewhere redirect to settings
+    // so the user sees exactly where to grant consent.
+    if (typeof window !== 'undefined' && window.location.pathname.startsWith('/settings/general')) {
+      setModalOpen(true)
+      return new Promise<boolean>((resolve) => {
+        pendingResolveRef.current = resolve
+      })
+    }
+
+    redirectToAiConsentSettings(router, { replace: false })
     return new Promise<boolean>((resolve) => {
       pendingResolveRef.current = resolve
+      pendingResolveRef.current(false)
+      pendingResolveRef.current = null
     })
-  }, [hasAiConsent])
+  }, [hasAiConsent, router])
 
   const handleConfirm = async (remember: boolean) => {
     setModalOpen(false)