Migrate orders backend from Django to Express + Apollo Server

Replace Python/Django/Graphene stack with TypeScript/Express/Apollo Server.
Same 3 GraphQL endpoints (public/user/team), same JWT auth via Logto JWKS,
same Odoo proxy logic. No database needed (pure proxy).

tsconfig.json

@@ -0,0 +1,19 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "Node16",
+    "moduleResolution": "Node16",
+    "outDir": "dist",
+    "rootDir": "src",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true,
+    "resolveJsonModule": true,
+    "declaration": true,
+    "declarationMap": true,
+    "sourceMap": true
+  },
+  "include": ["src/**/*"],
+  "exclude": ["node_modules", "dist"]
+}