fix: inttest runner crash and minio bucket-init proxy issue

- Remove --profiling-output arg from runner.yaml (plugin uses default path)
- Inline profiling hooks in root conftest.py with graceful fallback
- Replace mc-based bucket-init with Python urllib (no proxy interference)
- Add explicit ProxyHandler({}) to guarantee no proxy usage in bucket-init

conftest.py

@@ -1,2 +1,66 @@
-# Root conftest — pytest_plugins must be declared at the top level.
-pytest_plugins = ["tests.integration.conftest_profiling"]
+# Root conftest — profiling hooks for integration tests.
+#
+# Registers --profiling-output CLI option and writes a JSON timing report
+# after the test session completes. The profiler fixture itself is defined
+# in tests/integration/conftest.py (always available as a fallback) and
+# optionally overridden by this plugin when it loads successfully.
+from __future__ import annotations
+
+import pytest
+
+_profiler_instance = None
+_DEFAULT_OUTPUT = "/tmp/profiling-report.json"
+
+
+def pytest_addoption(parser: pytest.Parser) -> None:
+    """Add --profiling-output CLI flag."""
+    parser.addoption(
+        "--profiling-output",
+        action="store",
+        default=_DEFAULT_OUTPUT,
+        help=f"Path for the JSON profiling report (default: {_DEFAULT_OUTPUT})",
+    )
+
+
+@pytest.fixture(scope="session")
+def profiler():
+    """Session-scoped EndpointProfiler instance."""
+    global _profiler_instance  # noqa: PLW0603
+    try:
+        from tests.integration.profiler import EndpointProfiler
+        _profiler_instance = EndpointProfiler()
+    except ImportError:
+        # If profiler module unavailable, return a no-op object
+        from unittest.mock import MagicMock
+        _profiler_instance = MagicMock()
+    return _profiler_instance
+
+
+def pytest_sessionfinish(session: pytest.Session, exitstatus: int) -> None:
+    """Write profiling JSON report after all tests complete."""
+    if _profiler_instance is None:
+        return
+    output_path = session.config.getoption("profiling_output", _DEFAULT_OUTPUT)
+    try:
+        if hasattr(_profiler_instance, "write_json"):
+            _profiler_instance.write_json(output_path)
+    except (OSError, TypeError):
+        pass
+
+
+def pytest_terminal_summary(
+    terminalreporter: pytest.TerminalReporter,
+    exitstatus: int,
+    config: pytest.Config,
+) -> None:
+    """Print profiling summary at end of test session."""
+    if _profiler_instance is None:
+        return
+    output_path = config.getoption("profiling_output", _DEFAULT_OUTPUT)
+    try:
+        if hasattr(_profiler_instance, "print_summary"):
+            terminalreporter.section("Profiling Summary")
+            _profiler_instance.print_summary()
+            terminalreporter.write_line(f"JSON report written to: {output_path}")
+    except (OSError, TypeError):
+        pass