feat: 新增 cover_settings 表用于仪表盘题图设置
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-- ============================================================
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-- 002_add_cover_settings.sql — 题图设置表
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-- 执行方式: psql -U postgres -d milsci_dev -f 002_add_cover_settings.sql
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-- ============================================================
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-- 题图设置表(只存当前展示的一张题图,不动 episodes 表)
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CREATE TABLE IF NOT EXISTS cover_settings (
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id SERIAL PRIMARY KEY,
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key VARCHAR(50) NOT NULL UNIQUE DEFAULT 'dashboard_cover',
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cover_path TEXT, -- 当前题图文件路径(相对路径,如 /static/covers/xxx.jpg)
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episode_number INTEGER, -- 关联期次号(可空)
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episode_title TEXT, -- 关联期次节目名(可空)
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updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
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);
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-- 初始化默认值行(允许为空,表示使用默认渐变底图)
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INSERT INTO cover_settings (key, cover_path, episode_number, episode_title)
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VALUES ('dashboard_cover', NULL, NULL, NULL)
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ON CONFLICT (key) DO NOTHING;
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-- ============================================================
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-- 迁移完成
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-- ============================================================
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