Add subagent spec packing and shared package exports.

surfsense_backend/app/agents/multi_agent_with_deepagents/subagents/shared/__init__.py

@@ -0,0 +1,25 @@
+"""Cross-slice helpers for route subagents."""
+
+from __future__ import annotations
+
+from app.agents.multi_agent_with_deepagents.subagents.shared.md_file_reader import (
+    read_md_file,
+)
+from app.agents.multi_agent_with_deepagents.subagents.shared.permissions import (
+    ToolPermissionItem,
+    ToolsPermissions,
+    merge_tools_permissions,
+    tool_permission_row,
+)
+from app.agents.multi_agent_with_deepagents.subagents.shared.subagent_builder import (
+    pack_subagent,
+)
+
+__all__ = [
+    "ToolPermissionItem",
+    "ToolsPermissions",
+    "merge_tools_permissions",
+    "pack_subagent",
+    "read_md_file",
+    "tool_permission_row",
+]

surfsense_backend/app/agents/multi_agent_with_deepagents/subagents/shared/subagent_builder.py

@@ -0,0 +1,47 @@
+"""Build delegated sub-agent specs from route-local pieces."""
+
+from __future__ import annotations
+
+from collections.abc import Sequence
+from typing import Any, cast
+
+from deepagents import SubAgent
+from deepagents.middleware.patch_tool_calls import PatchToolCallsMiddleware
+from langchain_core.language_models import BaseChatModel
+from langchain_core.tools import BaseTool
+
+from app.agents.new_chat.middleware import DedupHITLToolCallsMiddleware
+
+
+def pack_subagent(
+    *,
+    name: str,
+    description: str,
+    system_prompt: str,
+    tools: list[BaseTool],
+    model: BaseChatModel | None = None,
+    extra_middleware: Sequence[Any] | None = None,
+    interrupt_on: dict[str, bool] | None = None,
+) -> SubAgent:
+    """Pack the route-local pieces passed in into one sub-agent spec."""
+    if not system_prompt.strip():
+        msg = f"Subagent {name!r}: system_prompt is empty"
+        raise ValueError(msg)
+
+    middleware: list[Any] = [
+        *(extra_middleware or []),
+        PatchToolCallsMiddleware(),
+        DedupHITLToolCallsMiddleware(agent_tools=tools),
+    ]
+    spec: dict[str, Any] = {
+        "name": name,
+        "description": description,
+        "system_prompt": system_prompt,
+        "tools": tools,
+        "middleware": middleware,
+    }
+    if model is not None:
+        spec["model"] = model
+    if interrupt_on:
+        spec["interrupt_on"] = interrupt_on
+    return cast(SubAgent, spec)