Add express scaffolding for backend services

blackroad-os-core/package.json

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+{
+  "name": "blackroad-os-core",
+  "version": "0.1.0",
+  "main": "dist/index.js",
+  "scripts": {
+    "dev": "ts-node-dev --respawn --transpile-only src/index.ts",
+    "build": "tsc",
+    "start": "node dist/index.js",
+    "health": "curl -f http://localhost:8080/health || exit 1"
+  },
+  "dependencies": {
+    "express": "^4.19.0",
+    "cors": "^2.8.5",
+    "dotenv": "^16.4.5"
+  },
+  "devDependencies": {
+    "@types/cors": "^2.8.17",
+    "@types/express": "^4.17.21",
+    "@types/node": "^20.11.0",
+    "ts-node-dev": "^2.0.0",
+    "typescript": "^5.6.0"
+  }
+}

blackroad-os-core/src/index.ts

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+import express from "express";
+import cors from "cors";
+import dotenv from "dotenv";
+
+dotenv.config();
+
+const app = express();
+app.use(cors());
+app.use(express.json());
+
+const PORT = process.env.PORT || 8080;
+const SERVICE_NAME = "blackroad-os-core";
+
+app.get("/", (_req, res) => {
+  res.json({
+    service: SERVICE_NAME,
+    status: "ok",
+    message: "BlackRoad OS Core root"
+  });
+});
+
+app.get("/health", (_req, res) => {
+  res.json({
+    service: SERVICE_NAME,
+    status: "ok"
+  });
+});
+
+app.listen(PORT, () => {
+  console.log(`✅ ${SERVICE_NAME} listening on port ${PORT}`);
+});

blackroad-os-core/tsconfig.json

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+{
+  "compilerOptions": {
+    "target": "ES2019",
+    "module": "commonjs",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true,
+    "outDir": "dist",
+    "rootDir": "src"
+  },
+  "include": ["src"]
+}