refactor: Phase 1 抽出 shared/skills_data 解耦 daily 与 bot

daily 不再通过 sys.path 导入 bot/skills_service，skills feed 数据层上移到 shared/。

Co-authored-by: Cursor <cursoragent@cursor.com>

bot/env_config.py

@@ -3,11 +3,16 @@
 from __future__ import annotations
 
 import os
+import sys
 from pathlib import Path
 
 from dotenv import load_dotenv
 
 _BOT_DIR = Path(__file__).resolve().parent
+_REPO_ROOT = _BOT_DIR.parent
+if str(_REPO_ROOT) not in sys.path:
+    sys.path.insert(0, str(_REPO_ROOT))
+
 load_dotenv(_BOT_DIR / ".env")
 load_dotenv(_BOT_DIR / ".env.local", override=True)