fix(prisma): colonnes Agent sourceNoteIds / slideTheme / slideStyle + migration

Répare le typecheck Next () : le code utilisait ces champs alors
que le schéma sur main ne les exposait pas encore.

Co-authored-by: Cursor <cursoragent@cursor.com>

memento-note/prisma/migrations/20260505103000_agent_source_notes_and_slide_options/migration.sql

@@ -0,0 +1,15 @@
+-- AlterTable: Agent — notes sources explicites + options slides (aligné schema.prisma)
+DO $$ BEGIN
+  ALTER TABLE "Agent" ADD COLUMN "sourceNoteIds" TEXT;
+EXCEPTION WHEN duplicate_column THEN NULL;
+END $$;
+
+DO $$ BEGIN
+  ALTER TABLE "Agent" ADD COLUMN "slideTheme" TEXT;
+EXCEPTION WHEN duplicate_column THEN NULL;
+END $$;
+
+DO $$ BEGIN
+  ALTER TABLE "Agent" ADD COLUMN "slideStyle" TEXT;
+EXCEPTION WHEN duplicate_column THEN NULL;
+END $$;