fix: Resolve Ruff E402 warnings and clean up imports across multiple modules

tests/test_reporting.py

@@ -1,11 +1,9 @@
 from __future__ import annotations
 
-import pytest
 from fastapi.testclient import TestClient
 from unittest.mock import Mock
 
-from models import Project, Scenario, FinancialInput
-from models.metadata import CostBucket, ResourceType
+from models import Project, Scenario
 from services.reporting import (
     ReportingService,
     ReportFilters,
@@ -244,7 +242,6 @@ class TestReportingRoutes:
     def test_unauthorized_access(self, client: TestClient):
         # Create a new client without authentication
         from fastapi import FastAPI
-        from routes.reports import router as reports_router
         app = FastAPI()
         app.include_router(reports_router)
         from fastapi.testclient import TestClient