feat(e2e): add freight e2e docker-compose stack with isolated services

e2e/freight/package.json

@@ -0,0 +1,22 @@
+{
+  "name": "@edr/freight-e2e",
+  "version": "0.0.0",
+  "private": true,
+  "description": "Cypress end-to-end tests for the EDR freight system (portal + backoffice + API)",
+  "scripts": {
+    "cy:open": "cypress open --e2e",
+    "cy:run": "cypress run",
+    "cy:run:backoffice": "cypress run --spec 'cypress/e2e/backoffice/**'",
+    "cy:run:portal": "cypress run --spec 'cypress/e2e/portal/**'",
+    "cy:run:api": "cypress run --spec 'cypress/e2e/api/**'",
+    "cy:run:flows": "cypress run --spec 'cypress/e2e/flows/**'",
+    "type-check": "tsc --noEmit"
+  },
+  "devDependencies": {
+    "cypress": "^15.3.0",
+    "pg": "^8.13.0",
+    "typescript": "^5.5.4",
+    "@types/node": "^22.0.0",
+    "@types/pg": "^8.11.0"
+  }
+}