fix: admin贡献数不再包含所有公共配方

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

backend/main.py

@@ -1644,7 +1644,10 @@ def my_contribution(user=Depends(get_current_user)):
         (f'%"from_user": "{display}"%',)
     ).fetchall()
     adopted_names = list(set(r["target_name"] for r in adopted_rows if r["target_name"]))
-    # pending: recipes still owned by user in public library
+    # pending: recipes still owned by user in public library (skip admin — admin owns all public recipes)
+    if user.get("role") == "admin":
+        pending_names = []
+    else:
         pending_rows = conn.execute(
             "SELECT name FROM recipes WHERE owner_id = ?", (user["id"],)
         ).fetchall()