### 合同分类

```
CREATE TABLE "public"."contract_categories" (
  "id" int4 NOT NULL DEFAULT nextval('contract_categories_id_seq'::regclass),
  "name" varchar(100) COLLATE "pg_catalog"."default" NOT NULL,
  "icon" varchar(100) COLLATE "pg_catalog"."default",
  "description" text COLLATE "pg_catalog"."default",
  "sort_order" int4 DEFAULT 0,
  "created_at" timestamptz(6) DEFAULT now(),
  "updated_at" timestamptz(6) DEFAULT now(),
  CONSTRAINT "contract_categories_pkey" PRIMARY KEY ("id")
)
;

ALTER TABLE "public"."contract_categories" 
  OWNER TO "root";

CREATE TRIGGER "update_contract_categories_updated_at" BEFORE UPDATE ON "public"."contract_categories"
FOR EACH ROW
EXECUTE PROCEDURE "public"."update_updated_at_column"();

COMMENT ON COLUMN "public"."contract_categories"."id" IS '分类ID（主键）';

COMMENT ON COLUMN "public"."contract_categories"."name" IS '分类名称';

COMMENT ON COLUMN "public"."contract_categories"."icon" IS '图标类名（如 font-awesome 类名）';

COMMENT ON COLUMN "public"."contract_categories"."description" IS '分类描述';

COMMENT ON COLUMN "public"."contract_categories"."sort_order" IS '排序顺序';

COMMENT ON COLUMN "public"."contract_categories"."created_at" IS '创建时间（带时区）';

COMMENT ON COLUMN "public"."contract_categories"."updated_at" IS '最后更新时间（带时区）';

COMMENT ON TABLE "public"."contract_categories" IS '合同分类表';
```


### 合同模板表
```
CREATE TABLE "public"."contract_templates" (
  "id" int8 NOT NULL DEFAULT nextval('contract_templates_id_seq'::regclass),
  "template_code" varchar(50) COLLATE "pg_catalog"."default" NOT NULL,
  "title" varchar(200) COLLATE "pg_catalog"."default" NOT NULL,
  "category_id" int4 NOT NULL,
  "description" text COLLATE "pg_catalog"."default",
  "file_path" varchar(500) COLLATE "pg_catalog"."default",
  "file_format" varchar(10) COLLATE "pg_catalog"."default" DEFAULT 'docx'::character varying,
  "is_featured" bool DEFAULT false,
  "created_at" timestamptz(6) DEFAULT now(),
  "updated_at" timestamptz(6) DEFAULT now(),
  "pdf_file_path" varchar(500) COLLATE "pg_catalog"."default",
  CONSTRAINT "contract_templates_pkey" PRIMARY KEY ("id"),
  CONSTRAINT "fk_category_id" FOREIGN KEY ("category_id") REFERENCES "public"."contract_categories" ("id") ON DELETE NO ACTION ON UPDATE NO ACTION,
  CONSTRAINT "contract_templates_template_code_key" UNIQUE ("template_code"),
  CONSTRAINT "valid_file_format" CHECK (file_format::text = ANY (ARRAY['docx'::character varying, 'pdf'::character varying, 'txt'::character varying]::text[]))
)
;

ALTER TABLE "public"."contract_templates" 
  OWNER TO "root";

CREATE INDEX "idx_contract_templates_category_id" ON "public"."contract_templates" USING btree (
  "category_id" "pg_catalog"."int4_ops" ASC NULLS LAST
);

CREATE TRIGGER "update_contract_templates_updated_at" BEFORE UPDATE ON "public"."contract_templates"
FOR EACH ROW
EXECUTE PROCEDURE "public"."update_updated_at_column"();

COMMENT ON COLUMN "public"."contract_templates"."id" IS '模板ID（主键）';

COMMENT ON COLUMN "public"."contract_templates"."template_code" IS '模板编号（唯一标识）';

COMMENT ON COLUMN "public"."contract_templates"."title" IS '模板标题';

COMMENT ON COLUMN "public"."contract_templates"."category_id" IS '所属分类ID（外键）';

COMMENT ON COLUMN "public"."contract_templates"."description" IS '模板描述';

COMMENT ON COLUMN "public"."contract_templates"."file_path" IS '文件存储路径';

COMMENT ON COLUMN "public"."contract_templates"."file_format" IS '文件格式（docx/pdf/txt）';

COMMENT ON COLUMN "public"."contract_templates"."is_featured" IS '是否推荐模板';

COMMENT ON COLUMN "public"."contract_templates"."created_at" IS '创建时间（带时区）';

COMMENT ON COLUMN "public"."contract_templates"."updated_at" IS '最后更新时间（带时区）';

COMMENT ON COLUMN "public"."contract_templates"."pdf_file_path" IS 'pdf文件存储路径';

COMMENT ON TABLE "public"."contract_templates" IS '合同模板表';
```