Port the end-to-end test suite to v2 (#2179)

.github/workflows/main.yml

@@ -54,7 +54,33 @@ jobs:
 
             - run: pnpm install
 
-            - run: pnpm test:all
+            # The e2e suite has its own job below; everything else runs here.
+            - run: pnpm -r --filter '!@modelcontextprotocol/test-e2e' test
+
+    test-e2e:
+        runs-on: ubuntu-latest
+        strategy:
+            fail-fast: false
+            matrix:
+                node-version: [20, 22, 24]
+
+        steps:
+            - uses: actions/checkout@v6
+
+            - name: Install pnpm
+              uses: pnpm/action-setup@fc06bc1257f339d1d5d8b3a19a8cae5388b55320 # v5.0.0
+              id: pnpm-install
+              with:
+                  run_install: false
+            - uses: actions/setup-node@v6
+              with:
+                  node-version: ${{ matrix.node-version }}
+                  cache: pnpm
+                  cache-dependency-path: pnpm-lock.yaml
+
+            - run: pnpm install
+
+            - run: pnpm --filter @modelcontextprotocol/test-e2e test
 
     test-runtimes:
         runs-on: ubuntu-latest