feat: dashboard Second Brain, essai 7 jours et vérification e-mail

Rendre le dashboard actionnable (inbox, peek, carte mentale), aligner la facturation sur l’essai 7 jours, et bloquer le login e-mail tant que l’adresse n’est pas confirmée.

Co-authored-by: Cursor <cursoragent@cursor.com>

memento-note/components/interactive-page/page-sticky-nav.tsx

@@ -25,7 +25,11 @@ function collectIntents(page: PageSpecV1): IntentId[] {
         }
       }
       if (block.type === 'demo') {
-        for (const panel of block.demo.scene.panels) {
+        const panels = [
+          ...block.demo.scene.panels,
+          ...block.demo.acts.flatMap((a) => a.scene?.panels ?? []),
+        ]
+        for (const panel of panels) {
           if (panel.type === 'svg-scene') {
             for (const n of panel.payload.nodes) if (n.intent) set.add(n.intent)
             for (const e of panel.payload.edges ?? []) if (e.intent) set.add(e.intent)