CREATE TABLE "ai_chat_messages" ( "id" text PRIMARY KEY NOT NULL, "thread_id" text NOT NULL, "position" integer NOT NULL, "role" text NOT NULL, "parts" jsonb NOT NULL, "created_at" timestamp DEFAULT now() NOT NULL ); --> statement-breakpoint CREATE TABLE "ai_chat_threads" ( "id" text PRIMARY KEY NOT NULL, "organization_id" text NOT NULL, "user_id" text NOT NULL, "title" text DEFAULT 'New chat' NOT NULL, "created_at" timestamp DEFAULT now() NOT NULL, "updated_at" timestamp DEFAULT now() NOT NULL ); --> statement-breakpoint ALTER TABLE "ai_chat_messages" ADD CONSTRAINT "ai_chat_messages_thread_id_ai_chat_threads_id_fk" FOREIGN KEY ("thread_id") REFERENCES "public"."ai_chat_threads"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint ALTER TABLE "ai_chat_threads" ADD CONSTRAINT "ai_chat_threads_organization_id_organization_id_fk" FOREIGN KEY ("organization_id") REFERENCES "public"."organization"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint ALTER TABLE "ai_chat_threads" ADD CONSTRAINT "ai_chat_threads_user_id_user_id_fk" FOREIGN KEY ("user_id") REFERENCES "public"."user"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint CREATE INDEX "ai_messages_thread_idx" ON "ai_chat_messages" USING btree ("thread_id","position");--> statement-breakpoint CREATE INDEX "ai_threads_org_user_idx" ON "ai_chat_threads" USING btree ("organization_id","user_id");