Initial commit: cc-cursor 全链路量化研究平台

7 Sprints 全部完成:
  Sprint 0: 基础设施 (DataManager + MariaDB)
  Sprint 1: 因子引擎 (34因子/12分类)
  Sprint 2: VectorBT 回测 (5策略+截面)
  Sprint 3: Optuna 优化 (+Walk-Forward)
  Sprint 4: ML 模型 (LightGBM+CatBoost)
  Sprint 5: Qwen 情绪因子 (三源新闻+日期对齐)
  Sprint 6: Agent 系统 (4Agent+日报.md/.html)

生产加固 (15项): Tushare双源fallback, SSH自动恢复, pool_pre_ping,
  save_daily先删后插, load_dotenv绝对路径, 日报5d/20d修复,
  RiskAgent改上证指数, 昨日对比+数据截止, mac_report utf8mb4,
  CLAUDE-*.md 9条已知Bug, demo全参数化, djapi数据源归一化,
  indexDatas API修正

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

djapi/api/utils/mysql_handler.py

@@ -0,0 +1,94 @@
+import os
+import mysql.connector
+from mysql.connector import Error
+
+
+class MySQLDB:
+    def __init__(self, host=None, port=None, username=None, password=None, database=None):
+        self.host = host or os.getenv('MYSQL_HOST', 'localhost')
+        self.port = port or int(os.getenv('MYSQL_PORT', '3306'))
+        self.username = username or os.getenv('MYSQL_USER', 'myquant')
+        self.password = password or os.getenv('MYSQL_PASSWORD', '')
+        self.database = database or os.getenv('MYSQL_DATABASE', 'myquant')
+        self.connection = None
+        self.connect()
+
+    def connect(self):
+        """连接数据库"""
+        try:
+            self.connection = mysql.connector.connect(
+                host=self.host,
+                port=self.port,
+                user=self.username,
+                password=self.password,
+                database=self.database
+            )
+            if self.connection.is_connected():
+                print("成功连接到MySQL数据库")
+        except Error as e:
+            print(f"连接错误: {e}")
+
+    def insert_data(self, table, data):
+        """插入数据"""
+        try:
+            cursor = self.connection.cursor()
+            columns = ', '.join(data.keys())
+            placeholders = ', '.join(['%s'] * len(data))
+            query = f"INSERT INTO {table} ({columns}) VALUES ({placeholders})"
+
+            cursor.execute(query, tuple(data.values()))
+            self.connection.commit()
+            print(f"成功插入数据，影响行数: {cursor.rowcount}")
+            return cursor.lastrowid
+        except Error as e:
+            print(f"插入错误: {e}")
+            return None
+        finally:
+            if cursor:
+                cursor.close()
+
+    def query_data(self, table, columns="*", where=None, params=None):
+        """查询数据"""
+        try:
+            cursor = self.connection.cursor(dictionary=True)
+
+            query = f"SELECT {columns} FROM {table}"
+            if where:
+                query += f" WHERE {where}"
+            print(query)
+            cursor.execute(query, params or ())
+            result = cursor.fetchall()
+            return result
+        except Error as e:
+            print(f"查询错误: {e}")
+            return []
+        finally:
+            if cursor:
+                cursor.close()
+
+    def update_data(self, table, data, where, params=None):
+        """更新数据"""
+        try:
+            cursor = self.connection.cursor()
+
+            set_clause = ', '.join([f"{key} = %s" for key in data.keys()])
+            query = f"UPDATE {table} SET {set_clause} WHERE {where}"
+
+            all_params = tuple(data.values()) + (params if params else ())
+
+            cursor.execute(query, all_params)
+            self.connection.commit()
+            print(f"成功更新数据，影响行数: {cursor.rowcount}")
+            return cursor.rowcount
+        except Error as e:
+            print(f"更新错误: {e}")
+            return 0
+        finally:
+            if cursor:
+                cursor.close()
+
+    def close(self):
+        """关闭数据库连接"""
+        if self.connection and self.connection.is_connected():
+            self.connection.close()
+            print("数据库连接已关闭")