feat: Publication de pages — notes publiques sur URL

- Migration: champs isPublic + publicSlug + publishedAt sur Note
- Route publique /p/[slug] — rendu SSR sans auth, prose styled
- Server actions: publishNote / unpublishNote / getPublishedNote
- API /api/notes/publish — toggle publication + génération slug
- PublishDialog — modal avec lien copiable + bouton dépublier
- Bouton Globe dans le toolbar (vert si publiée)
- i18n FR/EN
- Pattern inspiré de BrainstormSession.isPublic

memento-note/app/actions/notes-publishing.ts

@@ -0,0 +1,81 @@
+'use server'
+
+import { auth } from '@/auth'
+import prisma from '@/lib/prisma'
+import { revalidatePath } from 'next/cache'
+
+function generateSlug(title: string): string {
+  const base = title
+    .toLowerCase()
+    .normalize('NFD')
+    .replace(/[\u0300-\u036f]/g, '')
+    .replace(/[^a-z0-9]+/g, '-')
+    .replace(/^-+|-+$/g, '')
+    .slice(0, 60) || 'note'
+  
+  return `${base}-${Math.random().toString(36).slice(2, 8)}`
+}
+
+export async function publishNote(noteId: string): Promise<{ success: boolean; slug?: string; url?: string; error?: string }> {
+  const session = await auth()
+  if (!session?.user?.id) return { success: false, error: 'Unauthorized' }
+
+  const note = await prisma.note.findFirst({
+    where: { id: noteId, userId: session.user.id },
+    select: { id: true, title: true, isPublic: true, publicSlug: true },
+  })
+  if (!note) return { success: false, error: 'Note not found' }
+
+  let slug = note.publicSlug
+  if (!slug) {
+    slug = generateSlug(note.title || 'note')
+    // Ensure uniqueness
+    const existing = await prisma.note.findUnique({ where: { publicSlug: slug } })
+    if (existing && existing.id !== noteId) {
+      slug = `${slug}-${Date.now().toString(36)}`
+    }
+  }
+
+  await prisma.note.update({
+    where: { id: noteId },
+    data: { isPublic: true, publicSlug: slug, publishedAt: new Date() },
+  })
+
+  revalidatePath(`/p/${slug}`)
+  return { success: true, slug, url: `/p/${slug}` }
+}
+
+export async function unpublishNote(noteId: string): Promise<{ success: boolean; error?: string }> {
+  const session = await auth()
+  if (!session?.user?.id) return { success: false, error: 'Unauthorized' }
+
+  const note = await prisma.note.findFirst({
+    where: { id: noteId, userId: session.user.id },
+    select: { id: true, publicSlug: true },
+  })
+  if (!note) return { success: false, error: 'Note not found' }
+
+  await prisma.note.update({
+    where: { id: noteId },
+    data: { isPublic: false, publicSlug: null, publishedAt: null },
+  })
+
+  if (note.publicSlug) revalidatePath(`/p/${note.publicSlug}`)
+  return { success: true }
+}
+
+export async function getPublishedNote(slug: string) {
+  const note = await prisma.note.findFirst({
+    where: { publicSlug: slug, isPublic: true, trashedAt: null },
+    select: {
+      id: true,
+      title: true,
+      content: true,
+      publishedAt: true,
+      createdAt: true,
+      updatedAt: true,
+      user: { select: { name: true, image: true } },
+    },
+  })
+  return note
+}