feat: establish backend foundation

test/e2e-env.cjs

@@ -0,0 +1,2 @@
+process.env.DATABASE_URL = 'file:/tmp/wealth-ledger-e2e.db';
+process.env.FRONTEND_ORIGIN = 'http://localhost:5173';

test/jest-e2e.json

@@ -2,8 +2,12 @@
   "moduleFileExtensions": ["js", "json", "ts"],
   "rootDir": ".",
   "testEnvironment": "node",
+  "setupFiles": ["<rootDir>/e2e-env.cjs"],
   "testRegex": ".e2e-spec.ts$",
   "transform": {
     "^.+\\.(t|j)s$": "ts-jest"
+  },
+  "moduleNameMapper": {
+    "^(\\.{1,2}/.*)\\.js$": "$1"
   }
 }

test/runtime-check.cjs

@@ -0,0 +1,8 @@
+const assert = require('node:assert/strict');
+const { existsSync, readFileSync } = require('node:fs');
+
+const packageJson = JSON.parse(readFileSync('package.json', 'utf8'));
+
+assert.equal(packageJson.scripts['start:prod'], 'node dist/src/main.js');
+assert.ok(existsSync('dist/src/main.js'));
+assert.doesNotThrow(() => require('../dist/generated/prisma/client.js'));