feat: add slides generation tool with multiple slide types

- Add slides.tool.ts with support for title, bullets, chart, stats, table, cards, timeline, quote, comparison, equation, image, summary slide types
- Chart types: bar, horizontal-bar, line, donut, radar
- Integrate with agent executor and canvas system
- Add multilingual support (en/fr)
- Various UI improvements and bug fixes

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

memento-note/components/settings/SettingsNav.tsx

@@ -28,12 +28,12 @@ export function SettingsNav({ className }: SettingsNavProps) {
   const isActive = (href: string) => pathname === href || pathname.startsWith(href + '/')
 
   return (
-    <nav className={`flex flex-wrap items-center gap-1 border-b border-border/40 pb-px ${className || ''}`}>
+    <nav className={`flex overflow-x-auto items-center gap-1 border-b border-border/40 pb-px ${className || ''}`}>
       {tabs.map((tab) => (
         <Link
           key={tab.id}
           href={tab.href}
-          className="flex items-center gap-2.5 px-4 py-3 text-[10px] font-bold uppercase tracking-[0.18em] transition-all relative whitespace-nowrap text-concrete hover:text-ink/60"
+          className="flex items-center gap-1.5 sm:gap-2.5 px-2 sm:px-4 py-3 text-[10px] font-bold uppercase tracking-[0.18em] transition-all relative whitespace-nowrap text-concrete hover:text-ink/60"
           style={{ color: isActive(tab.href) ? 'var(--ink)' : undefined }}
         >
           <span style={{ color: isActive(tab.href) ? 'var(--ink)' : 'var(--concrete)' }}>{tab.icon}</span>