feat(content): 新增运营分类与剧单分类管理

sql/patch-2026-10-22-drama-classification.sql

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+-- Author: fruit.com.cn
+-- 运营分类（与「类型」drama_category 是两个概念）：分类可自定义增删，并关联多部短剧
+-- 幂等，仅提交文件，由发布流程执行
+
+CREATE TABLE IF NOT EXISTS drama_classification (
+  id         BIGINT PRIMARY KEY,
+  name       VARCHAR(64) NOT NULL,
+  sort       INTEGER     NOT NULL DEFAULT 0,
+  status     SMALLINT    NOT NULL DEFAULT 1,
+  created_at TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  updated_at TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+CREATE UNIQUE INDEX IF NOT EXISTS uk_drama_classification_name ON drama_classification (name);
+COMMENT ON TABLE drama_classification IS '运营分类；与短剧类型(drama_category)相互独立';
+
+CREATE TABLE IF NOT EXISTS drama_classification_drama (
+  id                BIGINT PRIMARY KEY,
+  classification_id BIGINT NOT NULL,
+  drama_id          BIGINT NOT NULL,
+  created_at        TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+CREATE UNIQUE INDEX IF NOT EXISTS uk_classification_drama
+  ON drama_classification_drama (classification_id, drama_id);
+CREATE INDEX IF NOT EXISTS idx_classification_drama_drama
+  ON drama_classification_drama (drama_id);
+COMMENT ON TABLE drama_classification_drama IS '分类与短剧的关联关系';
+
+DROP TRIGGER IF EXISTS trg_drama_classification_updated_at ON drama_classification;
+CREATE TRIGGER trg_drama_classification_updated_at
+  BEFORE UPDATE ON drama_classification
+  FOR EACH ROW EXECUTE FUNCTION set_updated_at();