refactor: 清理测试文件和2019相关代码

- 删除测试脚本: test_2026_classification.py, test_lagllama.py, test_timesfm.py, test_ttm.py
- 删除2019相关文件: analyze_2019_*, apply_2019_*, dlinear_2019_*, three_models_2019_*
- 添加集成模型相关代码和分析脚本
- 添加N-BEATS模型和CatBoost分类模型

.claude/settings.local.json

@@ -6,7 +6,13 @@
       "Bash(python:*)",
       "Bash(source:*)",
       "Bash(ls:*)",
-      "Bash(git add:*)"
+      "Bash(git add:*)",
+      "Bash(git commit:*)",
+      "Bash(tree:*)",
+      "Bash(git push:*)",
+      "Bash(conda activate:*)",
+      "WebSearch",
+      "Bash(pip install:*)"
     ]
   }
 }