持久化表情中文语义资产\n\n- 新增 t_emoji_assets 表及迁移脚本,持久化保存表情发送参数、中文语义与预览图路径\n- 在消息归档与媒体补偿流程中自动回填表情资产,实现收到表情即落语义、补图后回填预览\n- 后台表情库与自动回复优先读取持久化表情资产,仅在空表场景下小范围回补历史数据
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db/scripts/migrations/20260427_add_emoji_assets_table.sql
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db/scripts/migrations/20260427_add_emoji_assets_table.sql
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CREATE TABLE IF NOT EXISTS message_archive.t_emoji_assets (
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md5 VARCHAR(64) PRIMARY KEY COMMENT '表情MD5',
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total_length INT NOT NULL DEFAULT 0 COMMENT '表情总长度',
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semantic_text VARCHAR(255) DEFAULT '' COMMENT '主语义文本',
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semantic_aliases LONGTEXT NULL COMMENT '语义别名列表(JSON数组)',
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semantic_source VARCHAR(64) DEFAULT '' COMMENT '语义来源字段,如desc/emojiattr',
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preview_url VARCHAR(255) DEFAULT '' COMMENT '本地预览图路径',
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sample_message_id VARCHAR(32) DEFAULT '' COMMENT '样例消息ID',
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sample_group_id VARCHAR(100) DEFAULT '' COMMENT '样例群ID',
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sample_sender VARCHAR(100) DEFAULT '' COMMENT '样例发送者',
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first_seen_at DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '首次看到时间',
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last_seen_at DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '最近看到时间',
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created_at DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
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updated_at DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
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INDEX idx_emoji_last_seen (last_seen_at),
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INDEX idx_emoji_preview (preview_url)
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);
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