Fixes the xdist collision that broke CI on PR #17764, and structurally
prevents future plugin-adapter tests from reintroducing it.
Problem
-------
tests/gateway/test_teams.py (new in this PR) and tests/gateway/test_irc_adapter.py
(already on main) both followed the same anti-pattern:
sys.path.insert(0, str(_REPO_ROOT / 'plugins' / 'platforms' / '<name>'))
from adapter import <Adapter>
Every platform plugin ships its own adapter.py, so the bare
'from adapter import ...' races for sys.modules['adapter']. Whichever test
collected first in a given xdist worker won; the other crashed at
collection with ImportError, and the polluted sys.path cascaded into 19
unrelated test failures across tools/, hermes_cli/, and run_agent/ in the
same worker.
Fix
---
1. tests/gateway/_plugin_adapter_loader.py (new): shared helper
load_plugin_adapter('<name>') that imports plugins/platforms/<name>/adapter.py
via importlib.util under the unique module name plugin_adapter_<name>.
Zero sys.path mutation, no possibility of collision.
2. tests/gateway/test_irc_adapter.py and tests/gateway/test_teams.py:
migrated to the helper. All 'from adapter import ...' statements
(including the ones inside test methods) are replaced with module-level
attribute access on the loaded module.
3. tests/gateway/conftest.py: new pytest_configure guard that AST-scans
every test_*.py under tests/gateway/ at session start and fails the
run with a pointer to the helper if any test uses sys.path.insert into
plugins/platforms/ OR a bare 'import adapter' / 'from adapter import'.
Runs on the xdist controller only (skipped in workers). The next plugin
adapter test that tries to reintroduce this pattern gets rejected at
collection time with a clear remediation message.
4. scripts/release.py: add aamirjawaid@microsoft.com -> heyitsaamir to
AUTHOR_MAP so the check-attribution workflow passes.
Validation
----------
scripts/run_tests.sh tests/gateway/ 4194 passed
scripts/run_tests.sh tests/gateway/test_{teams,irc}* 72 passed (both orderings)
scripts/run_tests.sh <11 prev-failing test files> 398 passed
Guard triggers correctly on both Path-operator and string-literal forms
of the anti-pattern.
