fix: 西洋蓍草是正确名字，撤回误改；套装列表同步修正

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend/database.py

@@ -252,7 +252,7 @@ def init_db():
         c.execute("ALTER TABLE recipes ADD COLUMN volume TEXT DEFAULT ''")
 
     # Migration: rename oils 西洋蓍草→西洋蓍草石榴籽, 元气→元气焕能
-    _oil_renames = [("西洋蓍草", "西洋蓍草石榴籽"), ("元气", "元气焕能")]
+    _oil_renames = [("元气", "元气焕能")]
     for old_name, new_name in _oil_renames:
         old_exists = c.execute("SELECT 1 FROM oils WHERE name = ?", (old_name,)).fetchone()
         new_exists = c.execute("SELECT 1 FROM oils WHERE name = ?", (new_name,)).fetchone()