refactor(agents): move filesystem_selection to app/agents/shared (slice 3a)

Promote the filesystem mode contracts (FilesystemMode, FilesystemSelection,
ClientPlatform, LocalFilesystemMount) out of `new_chat` into the cross-agent
`app/agents/shared` kernel.

Pure leaf consumed across the whole multi-agent filesystem middleware/tool tree,
the chat flows/monolith, routes and tests. git mv (content unchanged) + flipped
all ~48 importers. A re-export shim remains at new_chat/filesystem_selection.py
only for the not-yet-retired single-agent (chat_deepagent).

Also updated the stream parity test's annotation normalizer to strip the new
app.agents.shared.filesystem_selection. prefix (the dataclasses' __module__
changed with the move), keeping monolith<->flows signature parity intact.

Behavior-preserving: only import paths change. 1326 tests green.

surfsense_backend/app/agents/multi_agent_chat/main_agent/graph/compile_graph_sync.py

@@ -16,7 +16,7 @@ from app.agents.multi_agent_chat.middleware.stack import (
 )
 from app.agents.shared.context import SurfSenseContextSchema
 from app.agents.shared.feature_flags import AgentFeatureFlags
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.db import ChatVisibility
 
 

surfsense_backend/app/agents/multi_agent_chat/main_agent/runtime/agent_cache.py

@@ -18,7 +18,7 @@ from app.agents.new_chat.agent_cache import (
     tools_signature,
 )
 from app.agents.shared.feature_flags import AgentFeatureFlags
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.db import ChatVisibility
 
 from ..graph.compile_graph_sync import build_compiled_agent_graph_sync

surfsense_backend/app/agents/multi_agent_chat/main_agent/runtime/factory.py

@@ -24,7 +24,7 @@ from app.agents.new_chat.connector_searchable_types import (
 )
 from app.agents.shared.feature_flags import AgentFeatureFlags, get_flags
 from app.agents.new_chat.filesystem_backends import build_backend_resolver
-from app.agents.new_chat.filesystem_selection import FilesystemMode, FilesystemSelection
+from app.agents.shared.filesystem_selection import FilesystemMode, FilesystemSelection
 from app.agents.new_chat.llm_config import AgentConfig
 from app.agents.new_chat.prompt_caching import apply_litellm_prompt_caching
 from app.agents.new_chat.tools.invalid_tool import INVALID_TOOL_NAME, invalid_tool

surfsense_backend/app/agents/multi_agent_chat/middleware/main_agent/anonymous_doc.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.agents.new_chat.middleware import AnonymousDocumentMiddleware
 
 

surfsense_backend/app/agents/multi_agent_chat/middleware/main_agent/kb_persistence.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.agents.new_chat.middleware import KnowledgeBasePersistenceMiddleware
 
 

surfsense_backend/app/agents/multi_agent_chat/middleware/main_agent/knowledge_priority.py

@@ -4,7 +4,7 @@ from __future__ import annotations
 
 from langchain_core.language_models import BaseChatModel
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.agents.new_chat.middleware import KnowledgePriorityMiddleware
 from app.services.llm_service import get_planner_llm
 

surfsense_backend/app/agents/multi_agent_chat/middleware/main_agent/knowledge_tree.py

@@ -4,7 +4,7 @@ from __future__ import annotations
 
 from langchain_core.language_models import BaseChatModel
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.agents.new_chat.middleware import KnowledgeTreeMiddleware
 
 

surfsense_backend/app/agents/multi_agent_chat/middleware/main_agent/skills.py

@@ -7,7 +7,7 @@ import logging
 from deepagents.middleware.skills import SkillsMiddleware
 
 from app.agents.shared.feature_flags import AgentFeatureFlags
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.agents.new_chat.middleware import (
     build_skills_backend_factory,
     default_skills_sources,

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/index.py

@@ -4,7 +4,7 @@ from __future__ import annotations
 
 from typing import Any
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 
 from .middleware import SurfSenseFilesystemMiddleware
 

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/middleware/middleware.py

@@ -7,7 +7,7 @@ from typing import Any
 from deepagents import FilesystemMiddleware
 from langchain_core.tools import BaseTool
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.agents.new_chat.filesystem_state import SurfSenseFilesystemState
 from app.agents.new_chat.sandbox import is_sandbox_enabled
 

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/middleware/mode.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.agents.new_chat.path_resolver import DOCUMENTS_ROOT
 
 

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/middleware/path_resolution.py

@@ -7,7 +7,7 @@ from typing import TYPE_CHECKING
 
 from langchain.tools import ToolRuntime
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.agents.new_chat.filesystem_state import SurfSenseFilesystemState
 from app.agents.new_chat.middleware.multi_root_local_folder_backend import (
     MultiRootLocalFolderBackend,

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/system_prompt/index.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 
 from .cloud import BODY as CLOUD_BODY
 from .common import HEADER, SANDBOX_ADDENDUM

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/tools/cd/description.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 
 _DESCRIPTION = """Changes the current working directory (cwd).
 

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/tools/edit_file/description.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 
 _CLOUD_DESCRIPTION = """Performs exact string replacements in files.
 

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/tools/execute_code/description.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 
 _DESCRIPTION = """Executes Python code in an isolated sandbox environment.
 

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/tools/glob/description.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 
 _DESCRIPTION = """Find files matching a glob pattern.
 

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/tools/grep/description.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 
 _CLOUD_DESCRIPTION = """Search for a literal text pattern across files.
 

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/tools/list_tree/description.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 
 _CLOUD_DESCRIPTION = """Lists files/folders recursively in a single bounded call.
 

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/tools/ls/description.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 
 _CLOUD_DESCRIPTION = """Lists files and directories at the given path.
 

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/tools/mkdir/description.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 
 _CLOUD_DESCRIPTION = """Creates a directory under `/documents/`.
 

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/tools/move_file/description.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 
 _CLOUD_DESCRIPTION = """Moves or renames a file or folder.
 

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/tools/pwd/description.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 
 _DESCRIPTION = """Prints the current working directory."""
 

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/tools/read_file/description.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 
 _DESCRIPTION = """Reads a file from the filesystem.
 

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/tools/rm/description.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 
 _CLOUD_DESCRIPTION = """Deletes a single file under `/documents/`.
 

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/tools/rmdir/description.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 
 _CLOUD_DESCRIPTION = """Deletes an empty directory under `/documents/`.
 

surfsense_backend/app/agents/multi_agent_chat/middleware/shared/filesystem/tools/write_file/description.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 
 _CLOUD_DESCRIPTION = """Writes a new text file to the workspace.
 

surfsense_backend/app/agents/multi_agent_chat/middleware/stack.py

@@ -32,7 +32,7 @@ from app.agents.multi_agent_chat.subagents.builtins.knowledge_base.ask_knowledge
     build_ask_knowledge_base_tool,
 )
 from app.agents.shared.feature_flags import AgentFeatureFlags
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.db import ChatVisibility
 
 from .main_agent.action_log import build_action_log_mw

surfsense_backend/app/agents/multi_agent_chat/subagents/builtins/knowledge_base/agent.py

@@ -14,7 +14,7 @@ from langchain_core.language_models import BaseChatModel
 from langchain_core.tools import BaseTool
 
 from app.agents.multi_agent_chat.subagents.shared.spec import SurfSenseSubagentSpec
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.agents.new_chat.permissions import Rule, Ruleset
 
 from .middleware_stack import build_kb_middleware

surfsense_backend/app/agents/multi_agent_chat/subagents/builtins/knowledge_base/middleware_stack.py

@@ -29,7 +29,7 @@ from app.agents.multi_agent_chat.middleware.shared.permissions import (
     build_permission_mw,
 )
 from app.agents.shared.feature_flags import AgentFeatureFlags
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.agents.new_chat.permissions import Ruleset
 
 

surfsense_backend/app/agents/multi_agent_chat/subagents/builtins/knowledge_base/prompts.py

@@ -3,7 +3,7 @@
 from __future__ import annotations
 
 from app.agents.multi_agent_chat.subagents.shared.md_file_reader import read_md_file
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 
 
 def load_system_prompt(filesystem_mode: FilesystemMode) -> str:

surfsense_backend/app/agents/new_chat/filesystem_backends.py

@@ -9,7 +9,7 @@ from deepagents.backends.protocol import BackendProtocol
 from deepagents.backends.state import StateBackend
 from langgraph.prebuilt.tool_node import ToolRuntime
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode, FilesystemSelection
+from app.agents.shared.filesystem_selection import FilesystemMode, FilesystemSelection
 from app.agents.new_chat.middleware.kb_postgres_backend import KBPostgresBackend
 from app.agents.new_chat.middleware.multi_root_local_folder_backend import (
     MultiRootLocalFolderBackend,

surfsense_backend/app/agents/new_chat/filesystem_selection.py

@@ -1,41 +1,24 @@
-"""Filesystem mode contracts and selection helpers for chat sessions."""
+"""Backward-compatible shim.
+
+The filesystem mode contracts moved to :mod:`app.agents.shared.filesystem_selection`
+as part of promoting the shared agent toolkit out of ``new_chat`` into the
+cross-agent kernel. Import from there directly; this re-export keeps the
+not-yet-retired single-agent stack working during the migration and will be
+removed with it.
+"""
 
 from __future__ import annotations
 
-from dataclasses import dataclass
-from enum import StrEnum
+from app.agents.shared.filesystem_selection import (
+    ClientPlatform,
+    FilesystemMode,
+    FilesystemSelection,
+    LocalFilesystemMount,
+)
 
-
-class FilesystemMode(StrEnum):
-    """Supported filesystem backends for agent tool execution."""
-
-    CLOUD = "cloud"
-    DESKTOP_LOCAL_FOLDER = "desktop_local_folder"
-
-
-class ClientPlatform(StrEnum):
-    """Client runtime reported by the caller."""
-
-    WEB = "web"
-    DESKTOP = "desktop"
-
-
-@dataclass(slots=True)
-class LocalFilesystemMount:
-    """Canonical mount mapping provided by desktop runtime."""
-
-    mount_id: str
-    root_path: str
-
-
-@dataclass(slots=True)
-class FilesystemSelection:
-    """Resolved filesystem selection for a single chat request."""
-
-    mode: FilesystemMode = FilesystemMode.CLOUD
-    client_platform: ClientPlatform = ClientPlatform.WEB
-    local_mounts: tuple[LocalFilesystemMount, ...] = ()
-
-    @property
-    def is_local_mode(self) -> bool:
-        return self.mode == FilesystemMode.DESKTOP_LOCAL_FOLDER
+__all__ = [
+    "ClientPlatform",
+    "FilesystemMode",
+    "FilesystemSelection",
+    "LocalFilesystemMount",
+]

surfsense_backend/app/agents/new_chat/middleware/filesystem.py

@@ -46,7 +46,7 @@ from langchain_core.messages import ToolMessage
 from langchain_core.tools import BaseTool, StructuredTool
 from langgraph.types import Command
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.agents.new_chat.filesystem_state import SurfSenseFilesystemState
 from app.agents.new_chat.middleware.kb_postgres_backend import (
     KBPostgresBackend,

surfsense_backend/app/agents/new_chat/middleware/kb_persistence.py

@@ -46,7 +46,7 @@ from sqlalchemy.exc import IntegrityError
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.agents.shared.feature_flags import get_flags
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.agents.new_chat.filesystem_state import SurfSenseFilesystemState
 from app.agents.new_chat.path_resolver import (
     DOCUMENTS_ROOT,

surfsense_backend/app/agents/new_chat/middleware/knowledge_search.py

@@ -42,7 +42,7 @@ from pydantic import BaseModel, Field, ValidationError
 from sqlalchemy import select
 
 from app.agents.shared.feature_flags import get_flags
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.agents.new_chat.filesystem_state import SurfSenseFilesystemState
 from app.agents.new_chat.path_resolver import (
     PathIndex,

surfsense_backend/app/agents/new_chat/middleware/knowledge_tree.py

@@ -33,7 +33,7 @@ from langchain_core.messages import SystemMessage
 from langgraph.runtime import Runtime
 from sqlalchemy import select
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.agents.new_chat.filesystem_state import SurfSenseFilesystemState
 from app.agents.new_chat.path_resolver import (
     DOCUMENTS_ROOT,

surfsense_backend/app/agents/shared/filesystem_selection.py

@@ -0,0 +1,41 @@
+"""Filesystem mode contracts and selection helpers for chat sessions."""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+from enum import StrEnum
+
+
+class FilesystemMode(StrEnum):
+    """Supported filesystem backends for agent tool execution."""
+
+    CLOUD = "cloud"
+    DESKTOP_LOCAL_FOLDER = "desktop_local_folder"
+
+
+class ClientPlatform(StrEnum):
+    """Client runtime reported by the caller."""
+
+    WEB = "web"
+    DESKTOP = "desktop"
+
+
+@dataclass(slots=True)
+class LocalFilesystemMount:
+    """Canonical mount mapping provided by desktop runtime."""
+
+    mount_id: str
+    root_path: str
+
+
+@dataclass(slots=True)
+class FilesystemSelection:
+    """Resolved filesystem selection for a single chat request."""
+
+    mode: FilesystemMode = FilesystemMode.CLOUD
+    client_platform: ClientPlatform = ClientPlatform.WEB
+    local_mounts: tuple[LocalFilesystemMount, ...] = ()
+
+    @property
+    def is_local_mode(self) -> bool:
+        return self.mode == FilesystemMode.DESKTOP_LOCAL_FOLDER

surfsense_backend/app/routes/new_chat_routes.py

@@ -24,7 +24,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.future import select
 from sqlalchemy.orm import selectinload
 
-from app.agents.new_chat.filesystem_selection import (
+from app.agents.shared.filesystem_selection import (
     ClientPlatform,
     FilesystemMode,
     FilesystemSelection,

surfsense_backend/app/tasks/chat/stream_new_chat.py

@@ -31,7 +31,7 @@ from app.agents.new_chat.chat_deepagent import create_surfsense_deep_agent
 from app.agents.new_chat.checkpointer import get_checkpointer
 from app.agents.shared.context import SurfSenseContextSchema
 from app.agents.shared.errors import BusyError
-from app.agents.new_chat.filesystem_selection import FilesystemMode, FilesystemSelection
+from app.agents.shared.filesystem_selection import FilesystemMode, FilesystemSelection
 from app.agents.new_chat.llm_config import (
     AgentConfig,
     create_chat_litellm_from_agent_config,

surfsense_backend/app/tasks/chat/streaming/agent/builder.py

@@ -9,7 +9,7 @@ from __future__ import annotations
 
 from typing import Any
 
-from app.agents.new_chat.filesystem_selection import FilesystemSelection
+from app.agents.shared.filesystem_selection import FilesystemSelection
 from app.agents.new_chat.llm_config import AgentConfig
 from app.db import ChatVisibility
 from app.services.connector_service import ConnectorService

surfsense_backend/app/tasks/chat/streaming/agent/event_loop.py

@@ -11,7 +11,7 @@ from __future__ import annotations
 from collections.abc import AsyncGenerator
 from typing import Any
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.agents.new_chat.middleware.kb_persistence import (
     commit_staged_filesystem_state,
 )

surfsense_backend/app/tasks/chat/streaming/flows/new_chat/input_state.py

@@ -28,7 +28,7 @@ from langchain_core.messages import HumanMessage
 from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.future import select
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.agents.new_chat.mention_resolver import resolve_mentions, substitute_in_text
 from app.db import (
     ChatVisibility,

surfsense_backend/app/tasks/chat/streaming/flows/new_chat/orchestrator.py

@@ -31,7 +31,7 @@ import anyio
 
 from app.agents.multi_agent_chat import create_multi_agent_chat_deep_agent
 from app.agents.new_chat.chat_deepagent import create_surfsense_deep_agent
-from app.agents.new_chat.filesystem_selection import FilesystemMode, FilesystemSelection
+from app.agents.shared.filesystem_selection import FilesystemMode, FilesystemSelection
 from app.agents.new_chat.middleware.busy_mutex import end_turn
 from app.config import config as _app_config
 from app.db import ChatVisibility, async_session_maker

surfsense_backend/app/tasks/chat/streaming/flows/resume_chat/orchestrator.py

@@ -25,7 +25,7 @@ import anyio
 
 from app.agents.multi_agent_chat import create_multi_agent_chat_deep_agent
 from app.agents.new_chat.chat_deepagent import create_surfsense_deep_agent
-from app.agents.new_chat.filesystem_selection import FilesystemMode, FilesystemSelection
+from app.agents.shared.filesystem_selection import FilesystemMode, FilesystemSelection
 from app.agents.new_chat.middleware.busy_mutex import end_turn
 from app.config import config as _app_config
 from app.db import ChatVisibility, async_session_maker

surfsense_backend/app/tasks/chat/streaming/flows/shared/stream_loop.py

@@ -15,7 +15,7 @@ from __future__ import annotations
 from collections.abc import AsyncGenerator, Awaitable, Callable
 from typing import Any
 
-from app.agents.new_chat.filesystem_selection import FilesystemMode
+from app.agents.shared.filesystem_selection import FilesystemMode
 from app.services.new_streaming_service import VercelStreamingService
 from app.tasks.chat.streaming.agent.event_loop import stream_agent_events
 from app.tasks.chat.streaming.shared.stream_result import StreamResult