M0：照壁 BFF 骨架（Fastify 透明代理：鉴权/幂等/续传头透传、SSE 直通、HJ-3001 映射）及测试与镜像

bff/tsconfig.json

@@ -0,0 +1,17 @@
+{
+  "compilerOptions": {
+    "target": "ES2023",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "lib": ["ES2023"],
+    "outDir": "dist",
+    "rootDir": "src",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "declaration": false,
+    "sourceMap": true,
+    "types": ["node"]
+  },
+  "include": ["src"]
+}