fix: PPTX watermark + black slide + pricing page /pricing

- export-pptx.ts: fix watermark position for LAYOUT_WIDE (13.33"×7.5")
  → moved from y:5.35 (71% height) to y:7.1 near bottom-right (x:10.0)
- export-pptx.ts: fix buildSummarySlide dark background (T.primary overlay
  covered 100% of slide appearing black) → cream bg with colored stat cards
  matching design of other brainstorm slides
- pptx.tool.ts: fix addImageFullSlide using t.primary as bg when no imageUrl
  → falls back to t.bg (light); text colors adapt accordingly
- pricing/page.tsx: create /pricing standalone page reusing exact landing
  page pricing section (PLANS array, billing toggle, i18n keys)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

memento-note/app/(public)/pricing/page.tsx

@@ -0,0 +1,94 @@
+'use client'
+
+import { motion } from 'motion/react'
+import { Shield } from 'lucide-react'
+import { useRouter } from 'next/navigation'
+import { useLanguage } from '@/lib/i18n'
+import { useState } from 'react'
+
+export default function PricingPage() {
+  const { t } = useLanguage()
+  const router = useRouter()
+  const [billingInterval, setBillingInterval] = useState<'monthly' | 'annual'>('monthly')
+
+  const PLANS = [
+    { key: 'basic', popular: false, price: t('landing.pricing.basicPrice'), period: '' },
+    { key: 'pro', popular: true, price: billingInterval === 'monthly' ? '9,90€' : '7,90€', period: billingInterval === 'monthly' ? t('landing.pricing.perMonth') : t('landing.pricing.perMonthAnnual') },
+    { key: 'business', popular: false, price: billingInterval === 'monthly' ? '29,90€' : '23,90€', period: billingInterval === 'monthly' ? t('landing.pricing.perMonth') : t('landing.pricing.perMonthAnnual') },
+    { key: 'enterprise', popular: false, price: billingInterval === 'monthly' ? '49,90€' : '39,90€', period: billingInterval === 'monthly' ? t('landing.pricing.perUser') : t('landing.pricing.perUserAnnual') },
+  ]
+
+  return (
+    <main className="min-h-screen bg-paper">
+      <section className="py-32 px-8">
+        <div className="max-w-7xl mx-auto">
+          <div className="text-center mb-12">
+            <span className="text-[11px] font-bold uppercase tracking-[0.3em] text-ochre mb-4 block">{t('landing.pricing.label')}</span>
+            <h2 className="text-4xl md:text-5xl font-serif tracking-tight text-ink mb-6">{t('landing.pricing.title')}</h2>
+            <p className="text-concrete font-light max-w-xl mx-auto mb-12">{t('landing.pricing.desc')}</p>
+
+            <div className="flex items-center justify-center gap-10 mb-8">
+              <button onClick={() => setBillingInterval('monthly')} className={`group relative py-2 px-1 transition-all ${billingInterval === 'monthly' ? 'text-ink' : 'text-concrete/40 hover:text-concrete'}`}>
+                <span className="text-xs font-black uppercase tracking-[0.2em]">{t('landing.pricing.monthly')}</span>
+                {billingInterval === 'monthly' && (
+                  <motion.div layoutId="interval-active-pricing" className="absolute -inset-x-1 -inset-y-0.5 border border-ochre/60" transition={{ type: 'spring', bounce: 0.2, duration: 0.6 }} />
+                )}
+              </button>
+              <div className="relative">
+                <button onClick={() => setBillingInterval('annual')} className={`group relative py-2 px-1 transition-all ${billingInterval === 'annual' ? 'text-ink' : 'text-concrete/40 hover:text-concrete'}`}>
+                  <span className="text-xs font-black uppercase tracking-[0.2em]">{t('landing.pricing.annual')}</span>
+                  {billingInterval === 'annual' && (
+                    <motion.div layoutId="interval-active-pricing" className="absolute -inset-x-1 -inset-y-0.5 border border-ochre/60" transition={{ type: 'spring', bounce: 0.2, duration: 0.6 }} />
+                  )}
+                </button>
+                <div className="absolute -top-6 left-1/2 -translate-x-1/2 whitespace-nowrap">
+                  <span className="text-[9px] font-bold text-ochre uppercase tracking-widest italic animate-pulse">(-20%)</span>
+                </div>
+              </div>
+            </div>
+          </div>
+
+          <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-6 items-stretch">
+            {PLANS.map((plan) => (
+              <div key={plan.key} className={`relative p-8 rounded-[32px] border flex flex-col transition-all duration-300 hover:shadow-2xl hover:shadow-ink/5 ${plan.popular ? 'bg-ink text-paper border-ink ring-4 ring-ochre/20' : 'bg-white border-border text-ink'}`}>
+                {plan.popular && (
+                  <div className="absolute -top-4 left-1/2 -translate-x-1/2 px-4 py-1 bg-ochre text-ink text-[10px] font-bold uppercase tracking-widest rounded-full">
+                    {t('landing.pricing.popular')}
+                  </div>
+                )}
+                <div className="mb-8">
+                  <h4 className="text-[11px] font-bold uppercase tracking-widest mb-2 opacity-60">{t(`landing.pricing.${plan.key}.name`)}</h4>
+                  <div className="flex items-baseline gap-1 mb-4">
+                    <span className="text-4xl font-serif font-medium">{plan.price}</span>
+                    {plan.period && <span className="text-xs opacity-60">{plan.period}</span>}
+                  </div>
+                  <p className="text-sm font-light leading-relaxed opacity-80">{t(`landing.pricing.${plan.key}.desc`)}</p>
+                </div>
+                <div className="flex-1 space-y-4 mb-10">
+                  {[0, 1, 2, 3, 4, 5].map(j => {
+                    const feat = t(`landing.pricing.${plan.key}.feature${j}`)
+                    if (!feat || feat === `landing.pricing.${plan.key}.feature${j}`) return null
+                    return (
+                      <div key={j} className="flex items-start gap-3">
+                        <div className={`mt-1 rounded-full p-0.5 ${plan.popular ? 'bg-ochre text-ink' : 'bg-brand-accent/10 text-brand-accent'}`}>
+                          <Shield size={10} fill="currentColor" />
+                        </div>
+                        <span className="text-xs font-light">{feat}</span>
+                      </div>
+                    )
+                  })}
+                </div>
+                <button
+                  onClick={() => router.push('/register')}
+                  className={`w-full py-4 rounded-2xl text-xs font-bold uppercase tracking-widest transition-all ${plan.popular ? 'bg-ochre text-ink hover:opacity-90' : 'bg-ink text-paper hover:bg-ink/90'}`}
+                >
+                  {t(`landing.pricing.${plan.key}.cta`)}
+                </button>
+              </div>
+            ))}
+          </div>
+        </div>
+      </section>
+    </main>
+  )
+}