feat(scenarios): 增强场景摘要与题型展示

apps/scenarios/services.py

@@ -36,9 +36,23 @@ def _get_nested(config: dict, path: tuple[str, ...]):
 
 
 def validate_scenario(config: dict) -> dict:
+    # 只校验真正影响运行闭环的必填字段；
+    # 页面展示类字段如 applicable_questions 允许缺失，并在归一化阶段补默认值。
     for field_path in REQUIRED_FIELDS:
         _get_nested(config, field_path)
-    return config
+    return normalize_scenario(config)
+
+
+def normalize_scenario(config: dict) -> dict:
+    """补齐页面和其他模块常用的派生字段，减少模板中的条件判断。"""
+    normalized = dict(config)
+    normalized["applicable_questions"] = list(config.get("applicable_questions") or [])
+    normalized["rag"] = dict(config.get("rag", {}))
+    normalized["rag"]["enabled"] = bool(normalized["rag"].get("enabled"))
+    normalized["tools"] = list(config.get("tools") or [])
+    normalized["tool_count"] = len(normalized["tools"])
+    normalized["is_enabled"] = True
+    return normalized
 
 
 def _scenario_files() -> list[Path]:
@@ -49,6 +63,7 @@ def _scenario_files() -> list[Path]:
 
 
 def list_scenarios() -> list[dict]:
+    # 首页每次读取最新 YAML，便于复试现场快速改题。
     scenarios = []
     for path in _scenario_files():
         with path.open("r", encoding="utf-8") as file: