test: isolate vitest home

test/setup.ts

@@ -0,0 +1,40 @@
+import fs from "node:fs";
+import os from "node:os";
+import path from "node:path";
+
+const originalHome = process.env.HOME;
+const originalUserProfile = process.env.USERPROFILE;
+const originalXdgConfigHome = process.env.XDG_CONFIG_HOME;
+const originalXdgDataHome = process.env.XDG_DATA_HOME;
+const originalXdgStateHome = process.env.XDG_STATE_HOME;
+const originalXdgCacheHome = process.env.XDG_CACHE_HOME;
+const originalTestHome = process.env.CLAWDIS_TEST_HOME;
+
+const tempHome = fs.mkdtempSync(path.join(os.tmpdir(), "clawdis-test-home-"));
+process.env.HOME = tempHome;
+process.env.USERPROFILE = tempHome;
+process.env.CLAWDIS_TEST_HOME = tempHome;
+process.env.XDG_CONFIG_HOME = path.join(tempHome, ".config");
+process.env.XDG_DATA_HOME = path.join(tempHome, ".local", "share");
+process.env.XDG_STATE_HOME = path.join(tempHome, ".local", "state");
+process.env.XDG_CACHE_HOME = path.join(tempHome, ".cache");
+
+const restoreEnv = (key: string, value: string | undefined) => {
+  if (value === undefined) delete process.env[key];
+  else process.env[key] = value;
+};
+
+process.on("exit", () => {
+  restoreEnv("HOME", originalHome);
+  restoreEnv("USERPROFILE", originalUserProfile);
+  restoreEnv("XDG_CONFIG_HOME", originalXdgConfigHome);
+  restoreEnv("XDG_DATA_HOME", originalXdgDataHome);
+  restoreEnv("XDG_STATE_HOME", originalXdgStateHome);
+  restoreEnv("XDG_CACHE_HOME", originalXdgCacheHome);
+  restoreEnv("CLAWDIS_TEST_HOME", originalTestHome);
+  try {
+    fs.rmSync(tempHome, { recursive: true, force: true });
+  } catch {
+    // ignore cleanup errors
+  }
+});