chore(tests): remove obsolete oauth2 regression plan doc

Author: nypdmax

tests/PHASE1_OAUTH2_REGRESSION_TEST_PLAN.md

@@ -1,8 +1,7 @@
-"""Phase2 integration tests: unified discovery endpoint and 401 WWW-Authenticate auth_protocols extension.
+"""Integration tests: unified auth protocol discovery and 401 WWW-Authenticate extensions.
 
 - Client requests /.well-known/authorization_servers and gets protocol list.
 - Server 401 header contains auth_protocols/default_protocol/protocol_preferences and client parses them.
-- Phase1 regression: run ./scripts/run_phase1_oauth2_integration_test.sh (see plan).
 """
 
 import httpx

…s/client/test_auth_integration_phase2.py …t_auth_protocol_discovery_integration.pytests/client/test_auth_integration_phase2.py renamed to tests/client/test_auth_protocol_discovery_integration.py tests/client/test_auth_integration_phase2.py renamed to tests/client/test_auth_protocol_discovery_integration.py

@@ -1291,7 +1291,7 @@ async def run_tool():
                 assert isinstance(captured_notifications[0], types.LoggingMessageNotification)  # pragma: lax no cover
                 assert captured_notifications[0].params.data == "First notification before lock"  # pragma: lax no cover
 
-    # Clear notifications and set up headers for phase 2 (between connections,
+    # Clear notifications and set up headers for the second connection (between connections,
     # not tracked by coverage on Python 3.11 due to cancel scope + sys.settrace bug)
     captured_notifications = []  # pragma: lax no cover
     assert captured_session_id is not None  # pragma: lax no cover