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/imports.py

@@ -5,9 +5,12 @@ from io import BytesIO
 from fastapi import APIRouter, Depends, File, HTTPException, UploadFile, status
 from fastapi import Request
 from fastapi.responses import HTMLResponse
-from fastapi.templating import Jinja2Templates
 
-from dependencies import get_import_ingestion_service, require_roles
+from dependencies import (
+    get_import_ingestion_service,
+    require_roles,
+    require_roles_html,
+)
 from models import User
 from schemas.imports import (
     ImportCommitRequest,
@@ -17,9 +20,10 @@ from schemas.imports import (
     ScenarioImportPreviewResponse,
 )
 from services.importers import ImportIngestionService, UnsupportedImportFormat
+from routes.template_filters import create_templates
 
 router = APIRouter(prefix="/imports", tags=["Imports"])
-templates = Jinja2Templates(directory="templates")
+templates = create_templates()
 
 MANAGE_ROLES = ("project_manager", "admin")
 
@@ -32,7 +36,7 @@ MANAGE_ROLES = ("project_manager", "admin")
 )
 def import_dashboard(
     request: Request,
-    _: User = Depends(require_roles(*MANAGE_ROLES)),
+    _: User = Depends(require_roles_html(*MANAGE_ROLES)),
 ) -> HTMLResponse:
     return templates.TemplateResponse(
         request,