Add user profile management for smoking data

- Introduced new API endpoints `GET /api/v1/smoke/profile` and `PUT /api/v1/smoke/profile` for retrieving and updating user smoking profiles.
- Added a new database table `fa_smoke_user_profile` to store user-specific smoking data, including daily smoking habits and motivations.
- Updated the smoke handler and service to integrate user profile data into AI advice generation.
- Enhanced documentation to reflect the new user profile features and their usage.

docs/sql/smoke.sql

@@ -54,3 +54,26 @@ CREATE TABLE IF NOT EXISTS `fa_smoke_ai_advice_unlocks` (
   UNIQUE KEY `uniq_smoke_ai_unlock` (`uid`,`unlock_date`),
   KEY `idx_smoke_ai_unlock_uid_date` (`uid`,`unlock_date`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='AI戒烟建议-广告解锁';
+
+-- 用户基础信息（首次进入补全，用于基准/AI/看板公式等）
+-- 说明：
+-- - 使用 GORM 默认 created_at/updated_at/deleted_at（datetime(3)）
+-- - smoke_motivations/quit_motivations 建议存 JSON 数组（例如 ["压力大","社交"]）
+CREATE TABLE IF NOT EXISTS `fa_smoke_user_profile` (
+  `id` bigint unsigned NOT NULL AUTO_INCREMENT,
+  `created_at` datetime(3) NULL DEFAULT NULL,
+  `updated_at` datetime(3) NULL DEFAULT NULL,
+  `deleted_at` datetime(3) NULL DEFAULT NULL,
+  `uid` int NOT NULL COMMENT '用户ID',
+  `baseline_cigs_per_day` int NOT NULL DEFAULT 0 COMMENT '基础烟量(日均抽烟支数)',
+  `smoking_years` decimal(6,2) NOT NULL DEFAULT 0.00 COMMENT '烟龄(年)',
+  `pack_price_cent` int NOT NULL DEFAULT 0 COMMENT '单包价格(分)',
+  `smoke_motivations` json DEFAULT NULL COMMENT '抽烟动机(JSON数组)',
+  `quit_motivations` json DEFAULT NULL COMMENT '戒烟动力(JSON数组)',
+  `wake_up_time` varchar(5) NOT NULL DEFAULT '' COMMENT '起床时间(HH:MM)',
+  `sleep_time` varchar(5) NOT NULL DEFAULT '' COMMENT '入睡时间(HH:MM)',
+  `onboarding_completed_at` datetime(3) DEFAULT NULL COMMENT '首次补全完成时间',
+  PRIMARY KEY (`id`),
+  UNIQUE KEY `uniq_smoke_profile_uid` (`uid`),
+  KEY `idx_smoke_profile_deleted_at` (`deleted_at`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='戒烟-用户基础信息';