chore(relay): scaffold tools/relay with MCP SDK dep

.gitignore

@@ -7,3 +7,4 @@ extension/dist-firefox/
 extension/wasm/
 reference.jpg
 ref.jpg
+tools/relay/node_modules/

tools/relay/package.json

@@ -0,0 +1,17 @@
+{
+  "name": "@relicario/relay",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "start": "npx tsx server.ts",
+    "test": "node --import=tsx/esm --test queue.test.ts"
+  },
+  "dependencies": {
+    "@modelcontextprotocol/sdk": "^1.10.0"
+  },
+  "devDependencies": {
+    "tsx": "^4.19.0",
+    "@types/node": "^22.0.0"
+  }
+}

tools/relay/tsconfig.json

@@ -0,0 +1,10 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "strict": true,
+    "noEmit": true
+  },
+  "include": ["*.ts"]
+}