fix(websearch): install hook for settings profiles

- ensure profile hook injection installs the transformer binary before writing the command

- keep migration marker cleanup in the installer to avoid a circular import

- add a regression test for isolated CCS_HOME settings profiles

tests/unit/utils/websearch/profile-hook-injector.test.ts

@@ -0,0 +1,41 @@
+import { afterEach, describe, expect, it } from 'bun:test';
+import * as fs from 'fs';
+import * as os from 'os';
+import * as path from 'path';
+import { ensureProfileHooks } from '../../../../src/utils/websearch/profile-hook-injector';
+import { getHookPath } from '../../../../src/utils/websearch/hook-config';
+
+describe('ensureProfileHooks', () => {
+  let tempHome: string | undefined;
+  let originalCcsHome: string | undefined;
+
+  afterEach(() => {
+    if (originalCcsHome !== undefined) {
+      process.env.CCS_HOME = originalCcsHome;
+    } else {
+      delete process.env.CCS_HOME;
+    }
+
+    if (tempHome && fs.existsSync(tempHome)) {
+      fs.rmSync(tempHome, { recursive: true, force: true });
+    }
+
+    tempHome = undefined;
+    originalCcsHome = undefined;
+  });
+
+  it('installs the hook binary before writing the profile hook command', () => {
+    tempHome = fs.mkdtempSync(path.join(os.tmpdir(), 'ccs-profile-hook-test-'));
+    originalCcsHome = process.env.CCS_HOME;
+    process.env.CCS_HOME = tempHome;
+
+    const ensured = ensureProfileHooks('glm');
+    const hookPath = getHookPath();
+    const settingsPath = path.join(tempHome, '.ccs', 'glm.settings.json');
+    const settings = JSON.parse(fs.readFileSync(settingsPath, 'utf8'));
+
+    expect(ensured).toBe(true);
+    expect(fs.existsSync(hookPath)).toBe(true);
+    expect(settings.hooks.PreToolUse[0].hooks[0].command).toBe(`node "${hookPath}"`);
+  });
+});