refactor(backend): 更新 agent 服务和配置层

backend/src/schemas/agent/system_agent.py

@@ -2,15 +2,51 @@ from __future__ import annotations
 
 from enum import Enum
 
-from pydantic import BaseModel, Field
+from pydantic import BaseModel, Field, field_validator
+
+from core.agentscope.tools.tool_config import ToolGroup
 
 
 class AgentType(str, Enum):
-    ROUTER = "router"
     WORKER = "worker"
+    MEMORY = "memory"
+
+
+class ContextBuildStrategy(str, Enum):
+    DAY = "day"
+    NUMBER = "number"
+
+
+class ContextMessagesConfig(BaseModel):
+    mode: ContextBuildStrategy = ContextBuildStrategy.NUMBER
+    count: int = Field(default=20, ge=1, le=200)
 
 
 class SystemAgentLLMConfig(BaseModel):
     temperature: float | None = Field(default=None, ge=0.0, le=2.0)
     max_tokens: int | None = Field(default=None, ge=1)
     timeout_seconds: float | None = Field(default=30.0, gt=0.0, le=300.0)
+    context_messages: ContextMessagesConfig = Field(
+        default_factory=ContextMessagesConfig
+    )
+    enabled_tool_groups: list[ToolGroup] = Field(default_factory=list, max_length=8)
+
+    @field_validator("enabled_tool_groups", mode="before")
+    @classmethod
+    def _normalize_enabled_tool_groups(cls, value: object) -> list[ToolGroup]:
+        if value is None:
+            return []
+        if not isinstance(value, list):
+            raise ValueError("enabled_tool_groups must be a list")
+        normalized: list[ToolGroup] = []
+        for item in value:
+            if isinstance(item, ToolGroup):
+                group = item
+            else:
+                raw_group = str(item or "").strip().lower()
+                if not raw_group:
+                    continue
+                group = ToolGroup(raw_group)
+            if group not in normalized:
+                normalized.append(group)
+        return normalized