fix(db): 缩短 license_key 列至 VARCHAR(768) 避免 InnoDB 索引超限 [tsk_Qmk4wT_dkqRR]
原 size:2048 在 utf8mb4 下产生 8192 字节索引,超过 InnoDB 3072 字节上限, 全新环境 AutoMigrate 必失败。改为 VARCHAR(768)(768×4=3072 字节,恰好 在上限内),schema.sql 同步更新列类型并将 uk_license_key 改为全列索引(无 需前缀)。新增测试 TestLicenseTokenFitsColumnLimit 验证最坏情况 token 长度 确实在 768 字符以内。 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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@@ -58,7 +58,7 @@ CREATE TABLE IF NOT EXISTS `users` (
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CREATE TABLE IF NOT EXISTS `licenses` (
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`id` BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
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`shop_id` BIGINT UNSIGNED NOT NULL,
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`license_key` VARCHAR(2048) NOT NULL COMMENT 'Ed25519 signed token',
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`license_key` VARCHAR(768) NOT NULL COMMENT 'Ed25519 signed token',
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`device_id` VARCHAR(255) DEFAULT NULL COMMENT 'deprecated: use license_devices',
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`type` ENUM('trial','monthly','annual','lifetime') NOT NULL DEFAULT 'trial',
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`expires_at` DATETIME DEFAULT NULL COMMENT 'NULL=永久',
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@@ -69,7 +69,7 @@ CREATE TABLE IF NOT EXISTS `licenses` (
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`created_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
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`updated_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
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PRIMARY KEY (`id`),
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UNIQUE KEY `uk_license_key` (`license_key`(255)),
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UNIQUE KEY `uk_license_key` (`license_key`),
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KEY `idx_shop_id` (`shop_id`)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='许可证';
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