fix(installer): disable dependency hooks explicitly across Bun versions

tests/test_install_portal_hooks.py

@@ -0,0 +1,94 @@
+"""Real Bun install against an offline npm registry: dependency hooks stay off.
+
+The fixture has the same ordinary npm dependency shape as esbuild, whose
+postinstall Bun 1.2 runs by default. It writes only a local marker. No public
+registry, credentials or lifecycle-script runner is mocked.
+"""
+import base64
+import hashlib
+import http.server
+import io
+import json
+import os
+from pathlib import Path
+import shutil
+import subprocess
+import sys
+import tarfile
+from tempfile import TemporaryDirectory
+import threading
+import unittest
+
+ROOT = Path(__file__).resolve().parent.parent
+BUN = os.environ.get("TEST_BUN") or shutil.which("bun")
+
+
+@unittest.skipUnless(BUN, "requires Bun for the offline package-manager integration")
+class DependencyHooks(unittest.TestCase):
+    def test_installing_dependency_does_not_execute_its_hook(self):
+        package = {"name": "esbuild", "version": "0.25.0", "scripts": {"postinstall": "bun run hook.js"}}
+        archive = io.BytesIO()
+        with tarfile.open(fileobj=archive, mode="w:gz") as tar:
+            for name, data in {
+                "package.json": json.dumps(package).encode(),
+                "hook.js": b'await Bun.write("hook-ran.txt", "ran");',
+            }.items():
+                entry = tarfile.TarInfo("package/" + name)
+                entry.size = len(data)
+                tar.addfile(entry, io.BytesIO(data))
+        blob = archive.getvalue()
+
+        class Registry(http.server.BaseHTTPRequestHandler):
+            def do_GET(self):
+                if self.path.endswith(".tgz"):
+                    body = blob
+                else:
+                    metadata = {**package, "dist": {
+                        "tarball": f"http://127.0.0.1:{self.server.server_port}/esbuild.tgz",
+                        "integrity": "sha512-" + base64.b64encode(hashlib.sha512(blob).digest()).decode(),
+                    }}
+                    body = json.dumps({"name": "esbuild", "dist-tags": {"latest": "0.25.0"},
+                                       "versions": {"0.25.0": metadata}}).encode()
+                self.send_response(200)
+                self.send_header("Content-Length", str(len(body)))
+                self.end_headers()
+                self.wfile.write(body)
+
+            def log_message(self, *args):
+                pass
+
+        server = http.server.ThreadingHTTPServer(("127.0.0.1", 0), Registry)
+        thread = threading.Thread(target=server.serve_forever, daemon=True)
+        thread.start()
+        try:
+            with TemporaryDirectory() as directory:
+                root = Path(directory)
+                tools = root / "tools"
+                tools.mkdir()
+                for name in ("install_portal_clis.py", "security_guards.py"):
+                    shutil.copyfile(ROOT / "tools" / name, tools / name)
+                cli = root / ".agents/skills/example-search/cli"
+                cli.mkdir(parents=True)
+                (cli / "package.json").write_text(json.dumps({
+                    "name": "example-search", "private": True, "dependencies": {"esbuild": "0.25.0"},
+                }), encoding="utf-8")
+                (cli / ".npmrc").write_text(f"registry=http://127.0.0.1:{server.server_port}/\n", encoding="utf-8")
+                env = {"PATH": str(Path(BUN).absolute().parent) + os.pathsep + os.defpath,
+                       "HOME": str(root), "TMPDIR": str(root), "TEMP": str(root), "TMP": str(root),
+                       "BUN_INSTALL_CACHE_DIR": str(root / "cache")}
+                if "SYSTEMROOT" in os.environ:
+                    env["SYSTEMROOT"] = os.environ["SYSTEMROOT"]
+                proc = subprocess.run([sys.executable, str(tools / "install_portal_clis.py")],
+                                      env=env, capture_output=True, text=True, timeout=30)
+                self.assertEqual(proc.returncode, 0, proc.stdout + proc.stderr)
+                dependency = cli / "node_modules/esbuild"
+                self.assertTrue((dependency / "hook.js").is_file(), "the dependency was actually installed")
+                self.assertFalse((dependency / "hook-ran.txt").exists(), "the dependency install hook ran")
+        finally:
+            server.shutdown()
+            server.server_close()
+            thread.join()
+
+
+if __name__ == "__main__":
+    unittest.main()