Add Node.js/Express backend with PostgreSQL and wire frontend to API

- Server: Express.js with 13 API route files (auth, regulations, contacts,
  calendar, truck stops, bridges, weigh stations, alerts, load board,
  escort locator, orders, documents, contributions)
- Database: PostgreSQL with Prisma ORM, 15 models covering all modules
- Auth: JWT + bcrypt with role-based access control (driver/carrier/escort/admin)
- Geospatial: Haversine distance filtering on truck stops, bridges, escorts
- Seed script: Imports all existing mock data (51 states, contacts, equipment,
  truck stops, bridges, weigh stations, alerts, seasonal restrictions)
- Frontend: All 10 data-driven pages now fetch from /api instead of mock-data.js
- API client (api.js): Compatibility layer that transforms API responses to
  match existing frontend rendering code, minimizing page-level changes

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

server/package.json

@@ -0,0 +1,26 @@
+{
+  "name": "pilotedge-server",
+  "version": "1.0.0",
+  "description": "PilotEdge backend API — Oversize Load Resource Platform",
+  "main": "src/index.js",
+  "scripts": {
+    "start": "node src/index.js",
+    "dev": "node --watch src/index.js",
+    "db:migrate": "npx prisma migrate dev",
+    "db:seed": "node src/seeds/seed.js",
+    "db:reset": "npx prisma migrate reset --force",
+    "db:studio": "npx prisma studio"
+  },
+  "dependencies": {
+    "@prisma/client": "^6.6.0",
+    "bcrypt": "^5.1.1",
+    "cors": "^2.8.5",
+    "dotenv": "^16.4.7",
+    "express": "^5.1.0",
+    "jsonwebtoken": "^9.0.2",
+    "multer": "^1.4.5-lts.2"
+  },
+  "devDependencies": {
+    "prisma": "^6.6.0"
+  }
+}