chore(tests): проверить backend на PostgreSQL и убрать ожидание idle пула

backend/src/db/index.ts

@@ -19,6 +19,7 @@ export function createPool(max = 16): pg.Pool {
     connectionString: env.DATABASE_URL,
     max,
     idleTimeoutMillis: 30_000,
+    allowExitOnIdle: process.env.NODE_ENV === "test",
     connectionTimeoutMillis: 8_000,
     statement_timeout: 120_000,
   })

backend/src/db/pg-pool.test.ts

@@ -0,0 +1,17 @@
+import assert from "node:assert/strict"
+import { createPool } from "./index.js"
+const original = process.env.NODE_ENV
+try {
+  for (const mode of ["production", "development", "test"]) {
+    process.env.NODE_ENV = mode
+    const pool = createPool(1)
+    assert.equal(pool.options.allowExitOnIdle, mode === "test")
+    assert.equal(pool.options.idleTimeoutMillis, 30_000)
+    assert.equal(pool.options.max, 1)
+    await pool.end()
+  }
+} finally {
+  if (original === undefined) delete process.env.NODE_ENV
+  else process.env.NODE_ENV = original
+}
+console.log("PG pool: tests may exit on idle; production/development retain normal pool lifecycle, no SQL connection")