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/static/admin/js/vendor/select2/i18n/bg.js

@@ -0,0 +1,3 @@
+/*! Select2 4.0.13 | https://github.com/select2/select2/blob/master/LICENSE.md */
+
+!function(){if(jQuery&&jQuery.fn&&jQuery.fn.select2&&jQuery.fn.select2.amd)var n=jQuery.fn.select2.amd;n.define("select2/i18n/bg",[],function(){return{inputTooLong:function(n){var e=n.input.length-n.maximum,u="Моля въведете с "+e+" по-малко символ";return e>1&&(u+="a"),u},inputTooShort:function(n){var e=n.minimum-n.input.length,u="Моля въведете още "+e+" символ";return e>1&&(u+="a"),u},loadingMore:function(){return"Зареждат се още…"},maximumSelected:function(n){var e="Можете да направите до "+n.maximum+" ";return n.maximum>1?e+="избора":e+="избор",e},noResults:function(){return"Няма намерени съвпадения"},searching:function(){return"Търсене…"},removeAllItems:function(){return"Премахнете всички елементи"}}}),n.define,n.require}();