feat: add integration tests for project and scenario lifecycles, update templates to new Starlette signature, and optimize project retrieval logic

routes/dashboard.py

@@ -105,10 +105,9 @@ def dashboard_home(
     uow: UnitOfWork = Depends(get_unit_of_work),
 ) -> HTMLResponse:
     context = {
-        "request": request,
         "metrics": _load_metrics(uow),
         "recent_projects": _load_recent_projects(uow),
         "simulation_updates": _load_simulation_updates(uow),
         "scenario_alerts": _load_scenario_alerts(request, uow),
     }
-    return templates.TemplateResponse("dashboard.html", context)
+    return templates.TemplateResponse(request, "dashboard.html", context)