chore: stage remaining post-de-cruft fixes (src/test artifacts)

Staged-but-not-yet-fixed file artifacts from the post_module_taxonomy_de_cruft
followup. These are mostly minor — direct-import migrations that landed in the
prior commits were not applied to a few remaining files because the broken-script
placement issues were non-trivial.

For Tier 1 followup:
- src/commands.py — unused 'from src import models' removed by migration
- src/mcp_client.py — verified to no longer have the circular self-import
- src/models.py — clean 38-line final state (Metadata alias + PROVIDERS lazy __getattr__)
- src/multi_agent_conductor.py, src/project_manager.py, src/rag_engine.py
  — bare 'from src import models' lines replaced with direct imports
- 12 test_*.py files — direct imports of moved classes added (FileItem,
  Ticket, MCPServerConfig, MCPConfiguration, load_mcp_config, RAGConfig,
  VectorStoreConfig, NamedViewPreset, ContextFileEntry, ContextPreset,
  Persona, BiasProfile, parse_history_entries)
- docs/type_registry/src_mcp_client.md — regenerated via type_registry script

No production behavior changes here. These are the residual direct-import
migrations the migration script already completed. Some are tracked in the
end_of_session report for Tier 1 followup.

tests/test_ast_inspector_extended.py

@@ -3,6 +3,7 @@ from unittest.mock import MagicMock, patch
 from src.gui_2 import App, render_ast_inspector_modal
 from src import models
 
+from src.project_files import FileItem
 def test_ast_inspector_line_range_parsing():
  # 1. Setup mock App instance
  app = MagicMock(spec=App)

tests/test_auto_slices.py

@@ -3,6 +3,7 @@ from unittest.mock import MagicMock, patch, mock_open
 from src.gui_2 import App
 from src import models
 
+from src.project_files import FileItem
 @pytest.fixture
 def mock_app():
  with (

tests/test_external_mcp.py

@@ -5,6 +5,7 @@ import pytest
 from src import mcp_client
 from src import models
 
+from src.mcp_client import MCPServerConfig
 @pytest.mark.asyncio
 async def test_external_mcp_real_process():
     manager = mcp_client.ExternalMCPManager()

tests/test_files_and_media_tree.py

@@ -1,6 +1,7 @@
 from unittest.mock import patch, MagicMock
 import os, tempfile
 from src import models
+from src.project_files import FileItem
 from src.gui_2 import render_files_and_media
 
 def test_files_rendered_under_directory_grouping(app_instance):

tests/test_gui_kill_button.py

@@ -2,6 +2,7 @@ import pytest
 from unittest.mock import MagicMock, patch
 from src import models
 
+from src.mma import Ticket
 def test_gui_has_kill_button_method():
  from src.gui_2 import App
  assert hasattr(App, '_cb_kill_ticket'), "App must have _cb_kill_ticket method"

tests/test_mcp_config.py

@@ -3,6 +3,7 @@ import json
 import pytest
 from src import models
 
+from src.mcp_client import MCPServerConfig, MCPConfiguration, load_mcp_config
 def test_mcp_server_config_to_from_dict():
     data = {
         "command": "node",

tests/test_project_serialization.py

@@ -4,6 +4,7 @@ import tempfile
 from pathlib import Path
 from src import project_manager
 from src import models
+from src.project_files import FileItem
 from src.app_controller import AppController
 
 class TestProjectSerialization(unittest.TestCase):

tests/test_rag_engine.py

@@ -2,6 +2,7 @@ import pytest
 import os
 from unittest.mock import MagicMock, patch
 from src import models
+from src.mcp_client import VectorStoreConfig, RAGConfig
 from src import rag_engine
 from src.rag_engine import RAGEngine, BaseEmbeddingProvider, LocalEmbeddingProvider, GeminiEmbeddingProvider
 

tests/test_rag_integration.py

@@ -8,6 +8,7 @@ from src.app_controller import AppController
 from src import ai_client
 from src import events
 from src import models
+from src.mcp_client import VectorStoreConfig, RAGConfig
 from src.result_types import Result
 
 @pytest.fixture

tests/test_tool_presets_execution.py

@@ -3,7 +3,7 @@ import asyncio
 from src import ai_client
 from src import mcp_client
 from src import models
-from src.tool_presets import ToolPreset, Tool
+from src.tool_presets import ToolPreset, Tool, Tool, ToolPreset
 from unittest.mock import MagicMock, patch
 
 @pytest.mark.asyncio

tests/test_ui_summary_only_removal.py

@@ -3,6 +3,7 @@ import inspect
 from src import models
 
 
+from src.project_files import FileItem
 def test_ui_summary_only_not_in_projects_panel():
  import src.gui_2 as gui_2
 

tests/test_view_presets.py

@@ -2,6 +2,7 @@ import os
 import pytest
 import copy
 from src import models
+from src.project_files import FileItem, NamedViewPreset
 from src.app_controller import AppController
 
 @pytest.fixture