test(e2e): queue suite model registrations for deletion via ResourceManager

build_logging_client defers each create_model into a session ResourceManager
and the client fixture tears it down at session end, so re-runs and parallel
workers never accumulate stale deployments

tests/e2e/logging/conftest.py

@@ -7,6 +7,7 @@ Never pytest.skip from this suite for environment gaps.
 from __future__ import annotations
 
 import os
+from collections.abc import Iterator
 
 import pytest
 
@@ -28,11 +29,14 @@ def pytest_configure(config: pytest.Config) -> None:
 
 
 @pytest.fixture(scope="session")
-def client() -> LoggingClient:
+def client() -> Iterator[LoggingClient]:
     """The logging suite's client: holds the shared Gateway so `resources` /
     `scoped_key` clean up keys and teams, and adds `/metrics` scraping plus
-    Langfuse read-back."""
-    return build_logging_client()
+    Langfuse and Phoenix read-back. The models registered at build time are
+    queued for deletion and removed at session end."""
+    logging_client, model_cleanup = build_logging_client()
+    yield logging_client
+    model_cleanup.teardown()
 
 
 @pytest.fixture

tests/e2e/logging/logging_client.py

@@ -21,6 +21,7 @@ from pydantic import BaseModel, ConfigDict, Field, JsonValue, RootModel, TypeAda
 
 from e2e_config import POLL_INTERVAL, POLL_TIMEOUT
 from e2e_gateway import Gateway, build_gateway
+from lifecycle import ResourceManager
 from e2e_http import (
     URL,
     AuthHeaders,
@@ -642,18 +643,24 @@ class LoggingClient:
         return self.list_langfuse_observations(creds, trace_id=gen.trace_id) or [gen]
 
 
-def build_logging_client() -> LoggingClient:
+def build_logging_client() -> tuple[LoggingClient, ResourceManager]:
+    """The suite's client plus a session ResourceManager holding the teardown
+    for the models registered here; the caller runs teardown at session end."""
     client = LoggingClient(gateway=build_gateway())
-    client.create_model(
+    resources = ResourceManager(client=client.gateway)
+    bedrock_sonnet = client.create_model(
         "bedrock/us.anthropic.claude-sonnet-5",
         LiteLLMParamsBody(model="bedrock/us.anthropic.claude-sonnet-5"),
     )
-    client.create_model(
+    resources.defer(lambda: client.delete_model(bedrock_sonnet))
+    bedrock_opus = client.create_model(
         "bedrock/us.anthropic.claude-opus-4-8",
         LiteLLMParamsBody(model="bedrock/us.anthropic.claude-opus-4-8"),
     )
-    client.create_model(
+    resources.defer(lambda: client.delete_model(bedrock_opus))
+    anthropic_sonnet = client.create_model(
         "anthropic/claude-sonnet-5",
         LiteLLMParamsBody(model="anthropic/claude-sonnet-5", api_key="os.environ/ANTHROPIC_API_KEY"),
     )
-    return client
+    resources.defer(lambda: client.delete_model(anthropic_sonnet))
+    return client, resources