feat: add scenarios list page with metrics and quick actions

- Introduced a new template for listing scenarios associated with a project.
- Added metrics for total, active, draft, and archived scenarios.
- Implemented quick actions for creating new scenarios and reviewing project overview.
- Enhanced navigation with breadcrumbs for better user experience.

refactor: update Opex and Profitability templates for consistency

- Changed titles and button labels for clarity in Opex and Profitability templates.
- Updated form IDs and action URLs for better alignment with new naming conventions.
- Improved navigation links to include scenario and project overviews.

test: add integration tests for Opex calculations

- Created new tests for Opex calculation HTML and JSON flows.
- Validated successful calculations and ensured correct data persistence.
- Implemented tests for currency mismatch and unsupported frequency scenarios.

test: enhance project and scenario route tests

- Added tests to verify scenario list rendering and calculator shortcuts.
- Ensured scenario detail pages link back to the portfolio correctly.
- Validated project detail pages show associated scenarios accurately.

routes/dashboard.py

@@ -4,14 +4,14 @@ from datetime import datetime
 
 from fastapi import APIRouter, Depends, Request
 from fastapi.responses import HTMLResponse, RedirectResponse
-from fastapi.templating import Jinja2Templates
+from routes.template_filters import create_templates
 
 from dependencies import get_current_user, get_unit_of_work
 from models import ScenarioStatus, User
 from services.unit_of_work import UnitOfWork
 
 router = APIRouter(tags=["Dashboard"])
-templates = Jinja2Templates(directory="templates")
+templates = create_templates()
 
 
 def _format_timestamp(moment: datetime | None) -> str | None: