feat: 完善代理重试机制，添加数据验证告警，新增README文档

db/ai_statistics_monthly.sql

@@ -0,0 +1,45 @@
+/*
+ Navicat Premium Dump SQL
+
+ Source Server         : mixue
+ Source Server Type    : MySQL
+ Source Server Version : 90001 (9.0.1)
+ Source Host           : localhost:3306
+ Source Schema         : ai_article
+
+ Target Server Type    : MySQL
+ Target Server Version : 90001 (9.0.1)
+ File Encoding         : 65001
+
+ Date: 25/12/2025 14:30:00
+*/
+
+SET NAMES utf8mb4;
+SET FOREIGN_KEY_CHECKS = 0;
+
+-- ----------------------------
+-- Table structure for ai_statistics_monthly
+-- ----------------------------
+DROP TABLE IF EXISTS `ai_statistics_monthly`;
+CREATE TABLE `ai_statistics_monthly`  (
+  `id` bigint NOT NULL AUTO_INCREMENT COMMENT '自增主键',
+  `author_id` int NOT NULL DEFAULT 0 COMMENT '作者ID',
+  `author_name` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '作者名称',
+  `channel` tinyint(1) NOT NULL DEFAULT 1 COMMENT '1=baidu|2=toutiao|3=weixin',
+  `stat_monthly` varchar(7) NOT NULL COMMENT '统计月份（格式：YYYY-MM，如2025-12表示2025年12月）',
+  `monthly_revenue` decimal(18, 2) NULL DEFAULT 0.00 COMMENT '当月收益（stat_monthly所在自然月的总收益）',
+  `revenue_mom_growth_rate` decimal(10, 6) NULL DEFAULT 0.000000 COMMENT '收益月环比增长率（(本月收益 - 上月收益) / NULLIF(上月收益, 0)）',
+  `created_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+  `updated_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+  PRIMARY KEY (`id`) USING BTREE,
+  UNIQUE INDEX `uk_author_stat_date`(`author_id` ASC, `stat_monthly` ASC) USING BTREE,
+  INDEX `idx_stat_date`(`stat_monthly` ASC) USING BTREE,
+  INDEX `idx_author_id`(`author_id` ASC) USING BTREE
+) ENGINE = InnoDB AUTO_INCREMENT = 1 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci COMMENT = 'AI内容每月核心指标汇总表（月粒度数据）' ROW_FORMAT = Dynamic;
+
+-- ----------------------------
+-- Records of ai_statistics_monthly
+-- ----------------------------
+-- 数据由导入脚本从CSV文件自动导入
+
+SET FOREIGN_KEY_CHECKS = 1;