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/app/api/notes/[id]/route.ts

@@ -167,6 +167,11 @@ export async function PUT(
       console.error('[HISTORY] Failed to create snapshot from /api/notes/[id] PUT:', snapshotError)
     }
 
+    // Fire-and-forget: sync [[wikilinks]] in background after content change
+    if ('content' in updateData) {
+      syncNoteLinksBackground(id, session.user.id, note.content).catch(() => {})
+    }
+
     return NextResponse.json({
       success: true,
       data: parseNote(note)
@@ -180,6 +185,56 @@ export async function PUT(
   }
 }
 
+/** Background job: parse [[wikilinks]] and sync NoteLink table */
+async function syncNoteLinksBackground(noteId: string, userId: string, content: string) {
+  const WIKILINK_RE = /\[\[([^\]|#]+?)(?:[|#][^\]]+)?\]\]/g
+  const plain = content.replace(/<[^>]+>/g, ' ')
+  const wikilinks: { title: string; snippet: string }[] = []
+  const seen = new Set<string>()
+  let match: RegExpExecArray | null
+
+  WIKILINK_RE.lastIndex = 0
+  while ((match = WIKILINK_RE.exec(plain)) !== null) {
+    const title = match[1].trim()
+    if (!title || seen.has(title.toLowerCase())) continue
+    seen.add(title.toLowerCase())
+    const start = Math.max(0, match.index - 50)
+    const end = Math.min(plain.length, match.index + match[0].length + 50)
+    const snippet = plain.slice(start, end).replace(/\s+/g, ' ').trim()
+    wikilinks.push({ title, snippet })
+  }
+
+  const upsertedIds: string[] = []
+
+  for (const { title, snippet } of wikilinks) {
+    let targetNote = await prisma.note.findFirst({
+      where: { userId, title: { equals: title, mode: 'insensitive' }, trashedAt: null },
+      select: { id: true },
+    })
+    if (!targetNote) {
+      targetNote = await prisma.note.create({
+        data: { title, content: '', userId, type: 'richtext', color: 'default', isMarkdown: true, order: 0 },
+        select: { id: true },
+      })
+    }
+    if (targetNote.id === noteId) continue
+    await (prisma as any).noteLink.upsert({
+      where: { sourceNoteId_targetNoteId: { sourceNoteId: noteId, targetNoteId: targetNote.id } },
+      update: { contextSnippet: snippet.slice(0, 200) },
+      create: { id: crypto.randomUUID(), sourceNoteId: noteId, targetNoteId: targetNote.id, contextSnippet: snippet.slice(0, 200) },
+    })
+    upsertedIds.push(targetNote.id)
+  }
+
+  if (upsertedIds.length > 0) {
+    await (prisma as any).noteLink.deleteMany({
+      where: { sourceNoteId: noteId, targetNoteId: { notIn: upsertedIds } },
+    })
+  } else {
+    await (prisma as any).noteLink.deleteMany({ where: { sourceNoteId: noteId } })
+  }
+}
+
 // DELETE /api/notes/[id] - Delete a note
 export async function DELETE(
   request: NextRequest,