Migrate e2e tests from Cypress to Playwright

Replace deprecated @grafana/e2e (Cypress) with @grafana/plugin-e2e
(Playwright). Add config editor tests and provisioned datasource.
Bump default Grafana version to 12.4.0 (required for jsx-runtime external).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Platane

.github/workflows/ci.yml

@@ -101,6 +101,9 @@ jobs:
       - name: Install dependencies
         run: npm ci
 
+      - name: Install Playwright
+        run: npx playwright install --with-deps chromium
+
       - name: Start Grafana (${{ matrix.GRAFANA_IMAGE.name }}:${{ matrix.GRAFANA_IMAGE.version }})
         run: docker compose up -d --build
         env:

.gitignore

@@ -31,8 +31,9 @@ artifacts/
 work/
 ci/
 e2e-results/
-**/cypress/videos
-**/cypress/report.json 
+playwright-report/
+test-results/
+playwright/.auth/
 
 # Editor
 .idea

cypress.json

@@ -16,7 +16,7 @@ services:
     build:
       context: ./.config
       args:
-        grafana_version: ${GRAFANA_VERSION:-12.1.0}
+        grafana_version: ${GRAFANA_VERSION:-12.4.0}
         grafana_image: ${GRAFANA_IMAGE:-grafana-oss}
     ports:
       - 3000:3000/tcp