add new playwrighte2e testing and replace cypres with it!

make playwright run and remove cypress! Migrate e2e coverage to Playwright and restore iframe task visibility

  - replace Cypress e2e setup with Playwright equivalents
  - run Playwright through the HTTPS dev server
  - use Playwright-managed Chromium instead of system Chromium
  - add client test support for showing runTasks chains in the active chat
  - route iframe-created task chains through the normal selected-task URL flow
  - keep background task execution available via runTasks display options

Author: yeus

.gitignore

@@ -49,7 +49,9 @@ public/taskyon_settings.json
 public/docs/openapi-docs.yml
 
 # holds test results...
-test/cypress/screenshots
+test-results/playwright
+test-results/
+playwright-report/
 
 # this file holds secrets
 cypress.env.json

AGENTS.md

@@ -112,7 +112,7 @@
 | Modelica CLI              | `yarn modelica:cli`                                              |
 | Modelica compare          | `yarn modelica:compare`                                          |
 | Modelica baseline diff    | `yarn modelica:baseline:diff`                                    |
-| Cypress e2e               | `yarn quasar test:e2e:cypress` (or via Quasar CLI)               |
+| Playwright e2e            | `yarn test:e2e`                                                  |
 
 ## Architecture
 

README.md

@@ -133,6 +133,7 @@ Common commands:
 
 - `yarn dev` starts the development app.
 - `yarn build` creates a production build.
+- `yarn test:e2e` runs the Playwright browser E2E suite.
 - `yarn lint` runs typechecking and ESLint.
 - `yarn format:file <path...>` formats specific files.