fix: remove broken dev_tools router references after API route migration

The dev_tools API routes were moved to the monitoring module, but several
files still tried to import the non-existent admin_router. This caused
warnings during app startup.

Changes:
- Remove _get_admin_router() from definition.py
- Clear routes/__init__.py and routes/api/__init__.py of broken imports
- Update exceptions.py to import from monitoring.exceptions
- Update code_quality_service.py to import from monitoring.exceptions

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/modules/dev_tools/definition.py

@@ -16,14 +16,9 @@ from app.modules.base import ModuleDefinition
 from models.database.admin_menu_config import FrontendType
 
 
-def _get_admin_router():
-    """Lazy import of admin router to avoid circular imports."""
-    from app.modules.dev_tools.routes.api.admin import admin_router
-
-    return admin_router
-
-
 # Dev-Tools module definition
+# Note: API routes (code quality, tests) have been moved to monitoring module.
+# This module retains models, services, and page routes only.
 dev_tools_module = ModuleDefinition(
     code="dev-tools",
     name="Developer Tools",
@@ -81,13 +76,13 @@ dev_tools_module = ModuleDefinition(
 
 def get_dev_tools_module_with_routers() -> ModuleDefinition:
     """
-    Get dev-tools module with routers attached.
+    Get dev-tools module definition.
 
-    This function attaches the routers lazily to avoid circular imports
-    during module initialization.
+    Note: API routes have been moved to monitoring module.
+    This module has no routers to attach.
     """
-    dev_tools_module.admin_router = _get_admin_router()
-    # No vendor router for internal modules
+    # No routers - API routes are now in monitoring module
+    dev_tools_module.admin_router = None
     dev_tools_module.vendor_router = None
     return dev_tools_module
 

app/modules/dev_tools/exceptions.py

@@ -12,9 +12,8 @@ from app.exceptions.base import (
     ResourceNotFoundException,
 )
 
-# Re-export code quality exceptions from legacy location
-# This avoids circular imports since app/exceptions/__init__.py imports code_quality.py
-from app.exceptions.code_quality import (
+# Re-export code quality exceptions from their module location
+from app.modules.monitoring.exceptions import (
     ViolationNotFoundException,
     ScanNotFoundException,
     ScanExecutionException,

app/modules/dev_tools/routes/__init__.py

@@ -2,15 +2,15 @@
 """
 Dev-Tools module route registration.
 
-This module provides dev-tools routes with module-based access control.
+This module provides dev-tools page routes for admin pages.
 
 Structure:
-- routes/api/ - REST API endpoints (code quality, tests)
 - routes/pages/ - HTML page rendering (component library, icons)
 
-Note: Dev-tools is an internal module (admin-only), so there is no vendor router.
+Note: API routes (code quality, tests) have been moved to the monitoring module.
+Dev-tools is an internal module (admin-only), so there is no vendor router.
 """
 
-from app.modules.dev_tools.routes.api import admin_router
-
-__all__ = ["admin_router"]
+# No routers to export - API routes moved to monitoring module
+# Page routes are auto-discovered from routes/pages/admin.py
+__all__ = []

app/modules/dev_tools/routes/api/__init__.py

@@ -2,13 +2,9 @@
 """
 Dev-Tools module API routes.
 
-Provides REST API endpoints for code quality and test running:
-- Admin API: Code quality scans, violations, test execution
-
-Note: Dev-tools is an internal module, so there are no vendor routes.
-Currently re-exports routes from the legacy location.
+Note: Code quality and test running routes have been moved to the monitoring module.
+The dev_tools module keeps models but routes are now in monitoring.
 """
 
-from app.modules.dev_tools.routes.api.admin import admin_router
-
-__all__ = ["admin_router"]
+# No routes exported - code quality and tests are in monitoring module
+__all__ = []

app/modules/dev_tools/routes/pages/__init__.py

@@ -1,4 +1,2 @@
-# Page routes will be added here
-# TODO: Add HTML page routes for admin/vendor dashboards
-
-__all__ = []
+# app/modules/dev_tools/routes/pages/__init__.py
+"""Dev tools module page routes."""

app/modules/dev_tools/services/code_quality_service.py

@@ -12,7 +12,7 @@ from datetime import datetime, UTC
 from sqlalchemy import desc, func
 from sqlalchemy.orm import Session
 
-from app.exceptions import (
+from app.modules.monitoring.exceptions import (
     ScanParseException,
     ScanTimeoutException,
     ViolationNotFoundException,