feat(appbase): params 加 register_open 参数 + 默认值首次插入不覆盖（保留 superuser 运行时修改）

scripts/create_tables.py

@@ -40,6 +40,7 @@ CREATE TABLE IF NOT EXISTS params (
 _PARAMS_INIT = [
     ("workspace_base", "/d/pipeline/workspaces"),
     ("task_max_retry", "3"),
+    ("register_open", "1"),
 ]
 
 # sd_features 功能/需求表 DDL（手写，避开 json2ddl 的 DEFAULT ''N'' bug；索引内联避免重复建 Duplicate key name）
@@ -226,7 +227,7 @@ async def main():
                 await sor.execute(
                     "INSERT INTO params (id, params_name, params_value) "
                     "VALUES (${id}$, ${n}$, ${v}$) "
-                    "ON DUPLICATE KEY UPDATE params_value=${v}$",
+                    "ON DUPLICATE KEY UPDATE params_name=params_name",
                     {"id": pname, "n": pname, "v": pval})
             print('  tables: appbase params ensured (workspace_base)')
         except Exception as e: