Add server conformance testing (#1375)

.github/workflows/conformance.yml

@@ -6,13 +6,17 @@ on:
   pull_request:
   workflow_dispatch:
 
+concurrency:
+  group: conformance-${{ github.ref }}
+  cancel-in-progress: true
+
 permissions:
   contents: read
 
 jobs:
   client-conformance:
     runs-on: ubuntu-latest
-    continue-on-error: true  # Non-blocking initially
+    continue-on-error: true
     steps:
       - uses: actions/checkout@v4
       - name: Install pnpm
@@ -27,3 +31,21 @@ jobs:
       - run: pnpm install
       - run: pnpm run build:all
       - run: pnpm run test:conformance:client:all
+
+  server-conformance:
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          run_install: false
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 24
+          cache: pnpm
+          cache-dependency-path: pnpm-lock.yaml
+      - run: pnpm install
+      - run: pnpm run build:all
+      - run: pnpm run test:conformance:server