Migrate away from legacy component and piece models

prisma/migrations/20250924090000_add_model_type_skeletons/migration.sql

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+-- AlterTable
+ALTER TABLE "ModelType"
+ADD COLUMN     "componentSkeleton" JSONB,
+ADD COLUMN     "pieceSkeleton" JSONB;

prisma/migrations/20250925103000_remove_component_piece_models/migration.sql

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+-- Migrate legacy component and piece models into ModelType skeletons, then drop obsolete tables
+
+-- Transfer component model structures into ModelType.componentSkeleton when missing
+UPDATE "ModelType" mt
+SET "componentSkeleton" = cm."structure"
+FROM (
+  SELECT DISTINCT ON ("typeComposantId")
+    "typeComposantId",
+    "structure"
+  FROM "composant_models"
+  WHERE "structure" IS NOT NULL
+  ORDER BY "typeComposantId", "updatedAt" DESC, "createdAt" DESC
+) cm
+WHERE mt."id" = cm."typeComposantId"
+  AND mt."componentSkeleton" IS NULL;
+
+-- Transfer piece model structures into ModelType.pieceSkeleton when missing
+UPDATE "ModelType" mt
+SET "pieceSkeleton" = pm."structure"
+FROM (
+  SELECT DISTINCT ON ("typePieceId")
+    "typePieceId",
+    "structure"
+  FROM "piece_models"
+  WHERE "structure" IS NOT NULL
+  ORDER BY "typePieceId", "updatedAt" DESC, "createdAt" DESC
+) pm
+WHERE mt."id" = pm."typePieceId"
+  AND mt."pieceSkeleton" IS NULL;
+
+-- Drop foreign keys before removing the legacy columns
+ALTER TABLE "composants" DROP CONSTRAINT IF EXISTS "composants_composantModelId_fkey";
+ALTER TABLE "pieces" DROP CONSTRAINT IF EXISTS "pieces_pieceModelId_fkey";
+
+-- Remove columns referencing the legacy model tables
+ALTER TABLE "composants" DROP COLUMN IF EXISTS "composantModelId";
+ALTER TABLE "pieces" DROP COLUMN IF EXISTS "pieceModelId";
+
+-- Drop obsolete model tables
+DROP TABLE IF EXISTS "composant_models";
+DROP TABLE IF EXISTS "piece_models";