refactor(指标分析): SELECT 字段按模型阶段重排

从按指标类型分组改为按模型阶段(str/rosn/rovn)分组，
每阶段内部顺序：samples → real → pred → copc → mae → mape → var

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

tasks/指标分析/01_实验组xTop20视频_vs对照组.sql

@@ -218,14 +218,17 @@ SELECT  dt
         ,exp_pct
         ,round((dau - dau_base) / NULLIF(dau_base, 0), 4) AS dau_chg
         ,round((exp - exp_base) / NULLIF(exp_base, 0), 4) AS exp_chg
-        -- COPC
-        ,str_copc, rosn_copc, rosn_ori_copc, rosn_stat_copc, rovn_copc, rovn_ori_copc, rovn_stat_copc
-        -- 模型预测与真实值
-        ,str_real, str_pred, rosn_real, rosn_pred, rosn_ori, rosn_stat
-        ,rovn_real, rovn_pred, rovn_ori, rovn_stat
-        ,str_mae, rosn_pred_mae, rosn_ori_mae, rosn_stat_mae, rovn_pred_mae, rovn_ori_mae, rovn_stat_mae
+        -- str（全量，预测是否回流）
+        ,str_samples, str_real, str_pred, str_copc, str_mae
+        -- rosn（回流子集，预测回流UV）
+        ,rosn_samples, rosn_real, rosn_pred, rosn_ori, rosn_stat
+        ,rosn_copc, rosn_ori_copc, rosn_stat_copc
+        ,rosn_pred_mae, rosn_ori_mae, rosn_stat_mae
         ,rosn_pred_mape, rosn_ori_mape, rosn_stat_mape
-        ,str_samples, rosn_samples, rovn_samples
+        -- rovn（全量，预测回流价值）
+        ,rovn_samples, rovn_real, rovn_pred, rovn_ori, rovn_stat
+        ,rovn_copc, rovn_ori_copc, rovn_stat_copc
+        ,rovn_pred_mae, rovn_ori_mae, rovn_stat_mae
         -- 业务指标
         ,exp_per_dau, str_one, ros_one, str, ros, str_plus, ros_minus, rovn, vovh24
         -- 计数

tasks/指标分析/02_实验组xTop20视频_vs对照组_误差分析.sql

@@ -226,15 +226,19 @@ SELECT  dt
         ,exp_pct
         ,round((dau - dau_base) / NULLIF(dau_base, 0), 4) AS dau_chg
         ,round((exp - exp_base) / NULLIF(exp_base, 0), 4) AS exp_chg
-        -- COPC
-        ,str_copc, rosn_copc, rosn_ori_copc, rosn_stat_copc, rovn_copc, rovn_ori_copc, rovn_stat_copc
-        -- 模型预测与真实值
-        ,str_real, str_pred, rosn_real, rosn_pred, rosn_ori, rosn_stat
-        ,rovn_real, rovn_pred, rovn_ori, rovn_stat
-        ,str_mae, rosn_pred_mae, rosn_ori_mae, rosn_stat_mae, rovn_pred_mae, rovn_ori_mae, rovn_stat_mae
-        ,str_var, rosn_pred_var, rosn_ori_var, rosn_stat_var, rovn_pred_var, rovn_ori_var, rovn_stat_var
+        -- str（全量，预测是否回流）
+        ,str_samples, str_real, str_pred, str_copc, str_mae, str_var
+        -- rosn（回流子集，预测回流UV）
+        ,rosn_samples, rosn_real, rosn_pred, rosn_ori, rosn_stat
+        ,rosn_copc, rosn_ori_copc, rosn_stat_copc
+        ,rosn_pred_mae, rosn_ori_mae, rosn_stat_mae
+        ,rosn_pred_var, rosn_ori_var, rosn_stat_var
         ,rosn_pred_mape, rosn_ori_mape, rosn_stat_mape
-        ,str_samples, rosn_samples, rovn_samples
+        -- rovn（全量，预测回流价值）
+        ,rovn_samples, rovn_real, rovn_pred, rovn_ori, rovn_stat
+        ,rovn_copc, rovn_ori_copc, rovn_stat_copc
+        ,rovn_pred_mae, rovn_ori_mae, rovn_stat_mae
+        ,rovn_pred_var, rovn_ori_var, rovn_stat_var
         -- 业务指标
         ,exp_per_dau, str_one, ros_one, str, ros, str_plus, ros_minus, rovn, vovh24
         -- 计数