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/validate.ts

@@ -6,7 +6,7 @@ import {
   isPageHumanStringKey,
 } from './constants'
 import { pageSpecV1Schema } from './schema'
-import { validateSimExprRefs } from './sim-eval'
+import { validateSimExprRefs, isValidSimParamId } from './sim-eval'
 import type {
   PageBlock,
   PageSpecV1,
@@ -79,6 +79,13 @@ function validateSim(
   if (sim.simId === 'generic-formula') {
     const generic = sim as Extract<typeof sim, { simId: 'generic-formula' }>
     const paramIds = new Set(generic.params.map((p) => p.id))
+    if (paramIds.size !== generic.params.length) {
+      out.push(issue('sim_duplicate_id', `${path}.params`, 'Duplicate param id'))
+    }
+    const computedIds = new Set(generic.computed.map((c) => c.id))
+    if (computedIds.size !== generic.computed.length) {
+      out.push(issue('sim_duplicate_id', `${path}.computed`, 'Duplicate computed id'))
+    }
     for (const p of generic.params) {
       if (p.min >= p.max) {
         out.push(issue('sim_param_range', `${path}.params`, `Param "${p.id}": min >= max`))