feat: add E2E testing package with Playwright

.changeset/config.json

@@ -11,5 +11,5 @@
 	"commit": false,
 	"linked": [],
 	"updateInternalDependencies": "patch",
-	"ignore": ["@solana/web3-compat-parity-tests"]
+	"ignore": ["@solana/web3-compat-parity-tests", "@solana/e2e"]
 }

.github/workflows/e2e.yml

@@ -0,0 +1,79 @@
+name: E2E Tests
+
+on:
+  pull_request:
+    paths:
+      - 'packages/**'
+      - 'examples/**'
+      - 'tests/e2e/**'
+      - '.github/workflows/e2e.yml'
+  push:
+    branches:
+      - main
+    paths:
+      - 'packages/**'
+      - 'examples/**'
+      - 'tests/e2e/**'
+      - '.github/workflows/e2e.yml'
+  # Allow manual trigger
+  workflow_dispatch:
+
+jobs:
+  e2e:
+    name: E2E Tests
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 10.20.0
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 24
+          cache: pnpm
+
+      - name: Cache Turbo
+        uses: actions/cache@v4
+        with:
+          path: .turbo
+          key: ${{ runner.os }}-turbo-e2e-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-turbo-e2e-
+            ${{ runner.os }}-turbo-
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Build packages
+        run: pnpm build
+
+      - name: Install Playwright browsers
+        run: pnpm --filter @solana/e2e exec playwright install chromium --with-deps
+
+      - name: Run E2E tests
+        run: pnpm --filter @solana/e2e test
+        env:
+          CI: true
+
+      - name: Upload Playwright report
+        uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: playwright-report
+          path: tests/e2e/playwright-report/
+          retention-days: 7
+
+      - name: Upload test results
+        uses: actions/upload-artifact@v4
+        if: failure()
+        with:
+          name: test-results
+          path: tests/e2e/test-results/
+          retention-days: 7