chore: clean up legacy tool/UI code paths and remove unused events

backend/src/core/agentscope/events/agui_codec.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, cast
+from typing import Any, cast
 
 from ag_ui.core import (
     BaseEvent,
@@ -14,9 +14,6 @@ from ag_ui.core import (
 from core.agentscope.runtime.ui_compiler import compile as compile_ui_hints
 from schemas.agent.ui_hints import UiHintsPayload
 
-if TYPE_CHECKING:
-    pass
-
 _INTERNAL_TO_AGUI: dict[str, EventType] = {
     "run.started": EventType.RUN_STARTED,
     "run.finished": EventType.RUN_FINISHED,

backend/src/core/agentscope/events/store.py

@@ -165,10 +165,6 @@ class SqlAlchemyEventStore:
         if not isinstance(role_value, str):
             role_value = "assistant"
         role = self._resolve_role(role_value)
-        tool_name = self._event_value(event, "tool_name")
-        tool_name_value = (
-            tool_name if isinstance(tool_name, str) and tool_name else None
-        )
 
         locked_session = await session_repo.lock_session_for_update(
             session_id=session_id
@@ -185,7 +181,6 @@ class SqlAlchemyEventStore:
             role=role,
             content=content,
             model_code=model_code if isinstance(model_code, str) else None,
-            tool_name=tool_name_value,
             metadata=metadata_model.model_dump(mode="json", exclude_none=True),
             input_tokens=input_tokens,
             output_tokens=output_tokens,

backend/src/core/agentscope/runtime/stage_emitter.py

@@ -37,7 +37,6 @@ class PipelineStageEmitter:
         self._emitted_tool_calls: set[str] = set()
         self._emitted_tool_results: set[str] = set()
         self.latest_text_message_id: str | None = None
-        self.latest_text: str = ""
 
     async def handle_print(self, *, msg: Msg, last: bool) -> None:
         del last
@@ -72,7 +71,6 @@ class PipelineStageEmitter:
         if not text:
             return
         self.latest_text_message_id = str(msg.id)
-        self.latest_text = text
 
     async def _emit_tool_events_from_msg(self, msg: Msg) -> None:
         for block in msg.get_content_blocks("tool_use"):

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

@@ -71,14 +71,3 @@ def build_toolkit(
         register_tool_middlewares(toolkit=toolkit)
 
     return toolkit
-
-
-def build_stage_toolkit(
-    *,
-    enabled_skill_names: set[str] | None = None,
-    enable_hitl: bool | None = None,
-) -> Any:
-    return build_toolkit(
-        enabled_skill_names=enabled_skill_names,
-        enable_hitl=enable_hitl,
-    )