diff --git a/.changeset/config-home-sweep.md b/.changeset/config-home-sweep.md
new file mode 100644
index 00000000..a845151c
--- /dev/null
+++ b/.changeset/config-home-sweep.md
@@ -0,0 +1,2 @@
+---
+---
diff --git a/test/helpers/config-home.ts b/test/helpers/config-home.ts
index 531683eb..bcdd3a14 100644
--- a/test/helpers/config-home.ts
+++ b/test/helpers/config-home.ts
@@ -1,12 +1,30 @@
-import { mkdtempSync } from "node:fs";
+import { mkdtempSync, rmSync } from "node:fs";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 
+const createdDirs: string[] = [];
+
 /**
  * Create an empty XDG_CONFIG_HOME for spawned hunk processes so integration tests assert
  * against built-in defaults instead of the developer's ambient ~/.config/hunk/config.toml.
  * hunk resolves XDG_CONFIG_HOME ahead of platform defaults, so this isolates every OS.
+ *
+ * Callers create the dir at module scope, so pair it with
+ * `afterAll(cleanupTestConfigHomes)` — Bun's test runner does not emit `process.on("exit")`,
+ * so the helper cannot sweep after itself.
  */
 export function createTestConfigHome(prefix = "hunk-test-config-") {
-  return mkdtempSync(join(tmpdir(), prefix));
+  const dir = mkdtempSync(join(tmpdir(), prefix));
+  createdDirs.push(dir);
+  return dir;
+}
+
+/** Remove every config home this module created; safe to call from multiple test files. */
+export function cleanupTestConfigHomes() {
+  while (createdDirs.length > 0) {
+    const dir = createdDirs.pop();
+    if (dir) {
+      rmSync(dir, { recursive: true, force: true });
+    }
+  }
 }
diff --git a/test/session/broker-e2e.test.ts b/test/session/broker-e2e.test.ts
index aad780fd..1b016975 100644
--- a/test/session/broker-e2e.test.ts
+++ b/test/session/broker-e2e.test.ts
@@ -1,14 +1,16 @@
-import { afterEach, describe, expect, test } from "bun:test";
+import { afterAll, afterEach, describe, expect, test } from "bun:test";
 import { mkdtempSync, rmSync, writeFileSync } from "node:fs";
 import { createServer } from "node:http";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
-import { createTestConfigHome } from "../helpers/config-home";
+import { cleanupTestConfigHomes, createTestConfigHome } from "../helpers/config-home";
 
 const repoRoot = process.cwd();
 const sourceEntrypoint = join(repoRoot, "src/main.tsx");
 // Spawned hunk processes must assert built-in defaults, not the developer's ambient user config.
 const testConfigHome = createTestConfigHome();
+
+afterAll(cleanupTestConfigHomes);
 const tempDirs: string[] = [];
 const ttyToolsAvailable =
   Bun.spawnSync(["bash", "-lc", "command -v script >/dev/null && command -v timeout >/dev/null"], {
diff --git a/test/session/cli.test.ts b/test/session/cli.test.ts
index 9ebe3ff6..5f781d4d 100644
--- a/test/session/cli.test.ts
+++ b/test/session/cli.test.ts
@@ -1,13 +1,15 @@
-import { afterEach, describe, expect, test } from "bun:test";
+import { afterAll, afterEach, describe, expect, test } from "bun:test";
 import { mkdirSync, mkdtempSync, rmSync, writeFileSync } from "node:fs";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
-import { createTestConfigHome } from "../helpers/config-home";
+import { cleanupTestConfigHomes, createTestConfigHome } from "../helpers/config-home";
 
 const repoRoot = process.cwd();
 const sourceEntrypoint = join(repoRoot, "src/main.tsx");
 // Spawned hunk processes must assert built-in defaults, not the developer's ambient user config.
 const testConfigHome = createTestConfigHome();
+
+afterAll(cleanupTestConfigHomes);
 const tempDirs: string[] = [];
 const ttyToolsAvailable =
   Bun.spawnSync(["bash", "-lc", "command -v script >/dev/null && command -v timeout >/dev/null"], {
diff --git a/test/session/daemon.test.ts b/test/session/daemon.test.ts
index 61b1980b..f559d30d 100644
--- a/test/session/daemon.test.ts
+++ b/test/session/daemon.test.ts
@@ -1,11 +1,13 @@
-import { afterEach, describe, expect, test } from "bun:test";
+import { afterAll, afterEach, describe, expect, test } from "bun:test";
 import type { Subprocess } from "bun";
 import { createServer } from "node:net";
-import { createTestConfigHome } from "../helpers/config-home";
+import { cleanupTestConfigHomes, createTestConfigHome } from "../helpers/config-home";
 
 const repoRoot = process.cwd();
 // Spawned hunk processes must assert built-in defaults, not the developer's ambient user config.
 const testConfigHome = createTestConfigHome();
+
+afterAll(cleanupTestConfigHomes);
 const spawned: Subprocess[] = [];
 
 async function reserveLoopbackPort() {
diff --git a/test/smoke/tty.test.ts b/test/smoke/tty.test.ts
index e541dca2..bf361818 100644
--- a/test/smoke/tty.test.ts
+++ b/test/smoke/tty.test.ts
@@ -1,13 +1,15 @@
-import { afterEach, describe, expect, setDefaultTimeout, test } from "bun:test";
+import { afterAll, afterEach, describe, expect, setDefaultTimeout, test } from "bun:test";
 import { mkdtempSync, rmSync, writeFileSync } from "node:fs";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
-import { createTestConfigHome } from "../helpers/config-home";
+import { cleanupTestConfigHomes, createTestConfigHome } from "../helpers/config-home";
 
 const repoRoot = process.cwd();
 const sourceEntrypoint = join(repoRoot, "src/main.tsx");
 // Spawned hunk processes must assert built-in defaults, not the developer's ambient user config.
 const testConfigHome = createTestConfigHome();
+
+afterAll(cleanupTestConfigHomes);
 const tempDirs: string[] = [];
 const enableTtySmokeTests = process.env.HUNK_RUN_TTY_SMOKE === "1";
 if (enableTtySmokeTests) {