Enhance testing framework and UI feedback

- Updated architecture documentation to include details on UI rendering checks and Playwright end-to-end tests.
- Revised testing documentation to specify Playwright for frontend E2E tests and added details on running tests.
- Implemented feedback mechanism in scenario form for successful creation notifications.
- Added feedback div in ScenarioForm.html for user notifications.
- Created new fixtures for Playwright tests to manage server and browser instances.
- Developed comprehensive E2E tests for consumption, costs, equipment, maintenance, production, and scenarios.
- Added smoke tests to verify UI page loading and form submissions.
- Enhanced unit tests for simulation and validation, including new tests for report generation and validation errors.
- Created new test files for router validation to ensure consistent error handling.
- Established a new test suite for UI routes to validate dashboard and reporting functionalities.
- Implemented validation tests to ensure proper handling of JSON payloads.

static/js/scenario-form.js

@@ -65,5 +65,14 @@ document.addEventListener("DOMContentLoaded", () => {
 
     form.reset();
     nameInput.focus();
+
+    const feedback = document.getElementById("feedback");
+    if (feedback) {
+      feedback.textContent = `Scenario "${data.name}" created successfully.`;
+      feedback.classList.remove("hidden");
+      setTimeout(() => {
+        feedback.classList.add("hidden");
+      }, 3000);
+    }
   });
 });