refactor: 简化 AgentScope 运行时模块与事件处理

- 移除冗余的 user_token 参数传递
- 重构 tool.result 事件使用 ToolAgentOutput 模型
- 重构 text.end 事件使用 WorkerAgentOutput 模型
- 简化 store 模块的 tool result 处理逻辑
- 更新 router/service 适配新事件结构
- 清理废弃的测试文件与设计文档
- 新增 AgentRuns 多模态存储设计文档

backend/src/core/agentscope/tools/tool_result_storage.py

@@ -0,0 +1,57 @@
+from __future__ import annotations
+
+import json
+from typing import Protocol
+
+from services.base.supabase import supabase_service
+
+
+class ToolResultStorage(Protocol):
+    async def upload_json(
+        self,
+        *,
+        bucket: str,
+        path: str,
+        payload: dict[str, object],
+    ) -> str: ...
+
+    async def read_json(
+        self,
+        *,
+        bucket: str,
+        path: str,
+    ) -> dict[str, object] | None: ...
+
+
+class SupabaseToolResultStorage:
+    async def upload_json(
+        self,
+        *,
+        bucket: str,
+        path: str,
+        payload: dict[str, object],
+    ) -> str:
+        serialized = json.dumps(payload, ensure_ascii=True, separators=(",", ":"))
+        await supabase_service.upload_bytes(
+            bucket=bucket,
+            path=path,
+            content=serialized.encode("utf-8"),
+            content_type="application/json",
+        )
+        return path
+
+    async def read_json(
+        self,
+        *,
+        bucket: str,
+        path: str,
+    ) -> dict[str, object] | None:
+        raw = await supabase_service.download_bytes(bucket=bucket, path=path)
+        decoded = json.loads(raw.decode("utf-8"))
+        if isinstance(decoded, dict):
+            return decoded
+        return None
+
+
+def create_tool_result_storage() -> ToolResultStorage:
+    return SupabaseToolResultStorage()