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/lib/interactive-page/normalize.ts

@@ -189,6 +189,31 @@ function normalizeBlock(
     return out
   }
 
+  if (type === 'steps' || type === 'derivation' || type === 'walkthrough' || type === 'solution' || type === 'proof') {
+    const rawSteps = Array.isArray(obj.steps) ? obj.steps : []
+    const steps = rawSteps
+      .map((st) => {
+        const r = asRecord(st)
+        if (!r) return null
+        const tex = asString(r.tex) || asString(r.latex) || asString(r.equation) || asString(r.math)
+        if (!tex) return null
+        const out: Record<string, unknown> = { tex }
+        const rule = asString(r.rule) || asString(r.transform) || asString(r.action) || asString(r.operation)
+        const speak = asString(r.speak) || asString(r.note) || asString(r.comment)
+        if (rule) out.rule = rule
+        if (speak) out.speak = speak
+        return out
+      })
+      .filter(Boolean)
+    if (steps.length < 2) return null
+    const out: Record<string, unknown> = { type: 'steps', steps }
+    const title = asString(obj.title)
+    if (title) out.title = title
+    const caption = asString(obj.caption)
+    if (caption) out.caption = caption
+    return out
+  }
+
   return null
 }