fix: batch priorités — thème, scroll, wizard, agents, slides, charts, packs

Anti-flash dark (color-scheme + applyDocumentTheme), scroll pages publiques,
prompts wizard/slides moins génériques, cron agents rattrapage nextRun null,
slides carnet via notebookId, graphiques à 2 crédits + hint, audit dashboard,
packs Stripe marqués non configurés sans price ID.

memento-note/lib/ai/services/notebook-wizard.service.ts

@@ -42,7 +42,8 @@ const LANG_NAMES: Record<string, string> = {
 function wordTargetsForLevel(level?: string): { min: number; max: number; label: string } {
   const l = (level || '').toLowerCase()
   if (/expert|avancé|advanced|fort/.test(l)) {
-    return { min: 400, max: 800, label: 'expert (400–800 words per note)' }
+    // Borné pour éviter timeouts JSON / mode expert qui plantait
+    return { min: 350, max: 700, label: 'expert (350–700 words per note, dense)' }
   }
   if (/intermédiaire|intermediate|moyen/.test(l)) {
     return { min: 300, max: 550, label: 'intermediate (300–550 words per note)' }
@@ -240,7 +241,13 @@ Return ONLY:
 Rules:
 - Exactly ${count} titles, progressive learning order.
 - Titles in ${this.langName(lang)} only.
-- notebookName ≠ full user sentence.`
+- notebookName ≠ full user sentence (3–8 words, concrete, topic-specific).
+- FORBIDDEN generic notebook names / chapter patterns (any language):
+  "Fondements", "Foundations", "Maîtrise", "Mastery", "Introduction",
+  "Basics", "Overview", "Getting started", "Chapitre 1", "Chapter 1",
+  "Partie 1", "Bases", "Notions de base", "Synthèse finale" alone.
+- Prefer specific titles that name the real subject (e.g. topic keywords + angle).
+- Each title must be unique and non-interchangeable with another topic.`
 
     const raw = await provider.generateText(prompt)
     const parsed = this.parseJsonObject(raw)
@@ -250,10 +257,41 @@ Rules:
     while (titles.length < count) {
       titles.push(lang === 'fr' ? `Chapitre ${titles.length + 1}` : `Chapter ${titles.length + 1}`)
     }
-    return {
-      notebookName: String(parsed?.notebookName || '').trim().slice(0, 80),
-      titles,
+    let notebookName = String(parsed?.notebookName || '').trim().slice(0, 80)
+    if (this.isGenericNotebookName(notebookName, topic)) {
+      notebookName = this.deriveNotebookName(topic, titles.map((t) => ({ title: t, content: '' })), lang)
     }
+    const cleanedTitles = titles.map((t, i) =>
+      this.isGenericChapterTitle(t) ? this.fallbackChapterTitle(topic, i, lang) : t,
+    )
+    return {
+      notebookName,
+      titles: cleanedTitles,
+    }
+  }
+
+  private isGenericNotebookName(name: string, topic: string): boolean {
+    const n = (name || '').trim().toLowerCase()
+    if (!n || n.length < 3) return true
+    if (n === topic.trim().toLowerCase() && topic.trim().split(/\s+/).length > 10) return true
+    const banned =
+      /^(fondements?|foundations?|ma[iî]trise|mastery|introduction|bases?|basics?|overview|getting started|notions de base|synth[eè]se|summary)$/i
+    return banned.test(n)
+  }
+
+  private isGenericChapterTitle(title: string): boolean {
+    const t = (title || '').trim()
+    if (!t) return true
+    return /^(chapitre|chapter|partie|part|section)\s*\d+$/i.test(t)
+      || /^(fondements?|foundations?|ma[iî]trise|introduction|bases?|basics?|overview)$/i.test(t)
+  }
+
+  private fallbackChapterTitle(topic: string, index: number, lang: string): string {
+    const short = topic.trim().slice(0, 48) || (lang === 'fr' ? 'Sujet' : 'Topic')
+    const anglesFr = ['Concepts clés', 'Méthodes', 'Exemples guidés', 'Pièges fréquents', 'Mise en pratique', 'Bilan']
+    const anglesEn = ['Key concepts', 'Methods', 'Guided examples', 'Common pitfalls', 'Practice', 'Recap']
+    const angles = lang === 'fr' ? anglesFr : anglesEn
+    return `${angles[index % angles.length]} — ${short}`
   }
 
   private async generateOneNote(