feat: publication IA (magazine/brief/essay) + fixes critique

Publication IA:
- 4 templates (magazine, brief, essay, simple) avec CSS riche
- Rewrite IA (article/exercises/tutorial/reference/mixed)
- Modération avec timeout 12s + fallback safe
- Quotas publish_enhance par tier (basic=2, pro=15, business=100)
- Détection contenu stale (hash)
- Migration DB publishedContent/publishedTemplate/publishedSourceHash

Fixes:
- cheerio v1.2: Element -> AnyNode (domhandler), decodeEntities cast
- _isShared ajouté au type Note (champ virtuel serveur)
- callout colors PDF export: extraction fonction pure testable
- admin/published: guard note.userId null
- Cmd+S fonctionne en mode dialog (pas seulement fullPage)

i18n:
- 23 clés publish* traduites dans les 15 locales
- Extension Web Clipper: 13 locales mise à jour

Tests:
- callout-colors.test.ts (6 tests)
- note-visible-in-view.test.ts (5 tests)
- entitlements.test.ts + byok-entitlements.test.ts: mock usageLog + unstubAllEnvs
- 199/199 tests passent

Tracker: user-stories.md sync avec sprint-status.yaml

memento-note/components/contextual-ai-chat.tsx

@@ -275,6 +275,13 @@ export function ContextualAIChat({
   const lastMsgHasContent = lastMsg?.role === 'assistant' && !!getMessageContent(lastMsg)
   const isLoading = (status === 'submitted' || status === 'streaming') && !lastMsgHasContent
 
+  // Dispatch quota refresh quand le streaming se termine
+  useEffect(() => {
+    if (status === 'ready' && messages.length > 0) {
+      window.dispatchEvent(new Event('ai-usage-changed'))
+    }
+  }, [status])
+
   useEffect(() => {
     messagesEndRef.current?.scrollIntoView({ behavior: 'smooth' })
   }, [messages, resourcePreview])
@@ -1283,7 +1290,7 @@ export function ContextualAIChat({
           <div className="flex flex-col items-center gap-4 py-8 opacity-20 mt-auto shrink-0 border-t border-border/10">
             <PenTool size={20} />
             <span className="text-[9px] font-bold uppercase tracking-[0.3em] whitespace-nowrap italic text-center">
-              {t('nav.workspace') || 'Momento Workspace'}
+              {t('nav.workspace') || 'Memento Workspace'}
             </span>
           </div>
         </div>