feat(db): add csv_analysis_config JSON column to animals

backend/prisma/migrations/20260501114346_add_animal_csv_analysis_config/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "animals" ADD COLUMN     "csv_analysis_config" JSONB;

backend/prisma/schema.prisma

@@ -25,6 +25,7 @@ model Animal {
   animal_id_string    String
   animal_name         String
   subject_info        Json?
+  csv_analysis_config Json?
   experiment          Experiment    @relation(fields: [experiment_id], references: [id], onDelete: Cascade)
   daily_statuses      DailyStatus[]