Coalesce quota refreshes and consolidate shared helpers

tests/project-env.test.mjs

@@ -0,0 +1,20 @@
+// Rôle : vérifie le parsing .env, la priorité du processus et les fichiers facultatifs.
+import { test } from "node:test";
+import assert from "node:assert/strict";
+import { loadProjectEnv } from "../scripts/load-project-env.mjs";
+
+for (const existing of ["9999", ""]) {
+  test(`project env preserves an existing ${existing ? "nonempty" : "empty"} value`, (t) => {
+    const keys = ["SOKKOG_ENV_FIXTURE_PORT", "SOKKOG_ENV_FIXTURE_QUOTED", "SOKKOG_ENV_FIXTURE_COMMENT"];
+    const previous = keys.map((key) => process.env[key]);
+    t.after(() => keys.forEach((key, index) => {
+      if (previous[index] === undefined) delete process.env[key];
+      else process.env[key] = previous[index];
+    }));
+    keys.forEach((key) => { delete process.env[key]; });
+    process.env.SOKKOG_ENV_FIXTURE_PORT = existing;
+    loadProjectEnv("tests/fixtures/project-env.txt");
+    loadProjectEnv("tests/fixtures/missing-env-file");
+    assert.deepEqual(keys.map((key) => process.env[key]), [existing, "value # inside", "value"]);
+  });
+}