层1: ars_opd 改为 editable 安装，修复脚本/调试器 import 失败

- pyproject.toml: 最小打包配置（依赖仍统一走 requirements*.txt）
- .vscode/launch.json: 调试当前文件 + teacher 生成两个配置，cwd 锚定仓库根
- setup_remote.sh 与 CLAUDE.md 常用命令同步 pip install -e

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.vscode/launch.json

@@ -0,0 +1,26 @@
+{
+    // VSCode 调试配置。前提：本地环境已 `pip install -e .`（见 README/CLAUDE.md），
+    // 且右下角解释器已选 ars-opd 环境。cwd 固定为仓库根：脚本里的相对路径
+    // （data/...、outputs/...）都以仓库根为基准。
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "调试当前文件",
+            "type": "debugpy",
+            "request": "launch",
+            "program": "${file}",
+            "console": "integratedTerminal",
+            "cwd": "${workspaceFolder}",
+            "justMyCode": false
+        },
+        {
+            "name": "teacher 批量生成（1k 子集）",
+            "type": "debugpy",
+            "request": "launch",
+            "program": "${workspaceFolder}/scripts/generate_teacher_completions.py",
+            "console": "integratedTerminal",
+            "cwd": "${workspaceFolder}",
+            "justMyCode": false
+        }
+    ]
+}