feat(challenges): 新增每日进度上报防重复机制

- 创建 t_challenge_progress_reports 表记录用户每日上报
- 通过唯一索引 (challenge_id, user_id, report_date) 确保每日仅一次有效上报
- 更新 progress 时先写入报告表，冲突则直接返回当前进度
- 模块中新增 ChallengeProgressReport 模型及相关依赖

sql-scripts/challenges.sql

@@ -40,3 +40,17 @@ CREATE TABLE IF NOT EXISTS t_challenge_participants (
 
 CREATE INDEX idx_challenge_participants_status_progress
   ON t_challenge_participants (challenge_id, status, progress_value DESC, updated_at ASC);
+
+CREATE TABLE IF NOT EXISTS t_challenge_progress_reports (
+  id CHAR(36) NOT NULL PRIMARY KEY,
+  challenge_id CHAR(36) NOT NULL COMMENT '挑战 ID',
+  user_id VARCHAR(64) NOT NULL COMMENT '用户 ID',
+  report_date DATE NOT NULL COMMENT '自然日，确保每日仅上报一次',
+  increment_value INT NOT NULL DEFAULT 1 COMMENT '本次上报的进度增量',
+  reported_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '上报时间戳',
+  created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+  CONSTRAINT fk_challenge_progress_reports_challenge FOREIGN KEY (challenge_id) REFERENCES t_challenges (id) ON DELETE CASCADE ON UPDATE CASCADE,
+  CONSTRAINT fk_challenge_progress_reports_user FOREIGN KEY (user_id) REFERENCES t_users (id) ON DELETE CASCADE ON UPDATE CASCADE,
+  CONSTRAINT uq_challenge_progress_reports_day UNIQUE KEY (challenge_id, user_id, report_date)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;