test: pin suite to reserved llm_tester tenant with guard and teardown

Rewrite tests/conftest.py for the shared-services testing model where
tenancy is the only isolation wall:

- Remove the hardcoded production host default (192.168.86.149):
  TEST_HOST env with a safe localhost default; LIBRARY_DESK_URL selects
  the local wakeup server (8778), never the production container (8089).
- Pin the suite to the reserved test tenant llm_tester (TEST_TENANT may
  only choose a tenant inside the reserved llm_tester* namespace).
- Session guard (autouse) hard-aborts the whole run if the effective
  tenant is jpmschweitzer or outside the reserved namespace.
- Integration-marked tests only run with RUN_INTEGRATION_TESTS=1 and a
  passing guard; they are skipped otherwise.
- Session-scoped teardown deletes ALL llm_tester artifacts created
  during the run: Qdrant *_llm_tester collections, Neo4j
  User_Llm_Tester* nodes, wiki subtree users/llm_tester (and hyphen
  variant), llm_tester Redis keys on the service DB - with hard
  assert_safe_test_tenant() checks before every delete. Uses a sync
  fixture + asyncio.run to avoid the session loop-scope mismatch.
- Legacy tests/test_integration.py marked integration and pinned to the
  test tenant (taxonomy/list reads no longer touch the production
  namespace; Qdrant tests use the tenant-scoped collection name).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/test_integration.py

@@ -7,13 +7,22 @@ These tests require actual service connectivity:
 - SearXNG running at http://searxng:8080
 - Ollama running at http://ollama:11434
 
-Run with: pytest tests/test_integration.py -v
+These tests run against the SHARED production services under the reserved
+test tenant only. They are gated behind the session tenant guard and the
+RUN_INTEGRATION_TESTS=1 environment flag (see tests/conftest.py) and are
+skipped otherwise.
+
+Run with:
+    RUN_INTEGRATION_TESTS=1 TEST_HOST=<shared-host> \
+        .venv/bin/python -m pytest tests/test_integration.py -v
 """
 
 import pytest
 import pytest_asyncio
 from typing import AsyncGenerator
 
+from tests.conftest import TEST_TENANT, assert_safe_test_tenant
+
 from src.clients.neo4j_client import Neo4jClient
 from src.clients.qdrant_client import QdrantClientWrapper
 from src.clients.wikijs_client import WikiJSClient
@@ -22,6 +31,9 @@ from src.clients.ollama_client import OllamaClient
 from src.jobs.job_manager import JobManager, JobType, JobStatus
 from src.config import get_settings
 
+# Only run when the tenant guard passes and integration mode is enabled.
+pytestmark = pytest.mark.integration
+
 
 @pytest.fixture
 def settings():
@@ -100,6 +112,7 @@ class TestNeo4jIntegration:
     @pytest.mark.asyncio
     async def test_create_and_get_document(self, neo4j_client, test_user):
         """Test creating and retrieving a document node."""
+        assert_safe_test_tenant(test_user)
         doc_id = "test_doc_integration"
 
         # Create document
@@ -131,9 +144,10 @@ class TestQdrantIntegration:
     @pytest.mark.asyncio
     async def test_collection_creation(self, qdrant_client, test_user):
         """Test creating a collection."""
-        await qdrant_client.ensure_collection(test_user)
-
+        assert_safe_test_tenant(test_user)
         collection_name = qdrant_client.get_collection_name(test_user)
+        await qdrant_client.ensure_collection(collection_name)
+
         collections = qdrant_client.client.get_collections()
         collection_names = [c.name for c in collections.collections]
 
@@ -142,7 +156,10 @@ class TestQdrantIntegration:
     @pytest.mark.asyncio
     async def test_upsert_and_search(self, qdrant_client, test_user):
         """Test upserting and searching chunks."""
-        await qdrant_client.ensure_collection(test_user)
+        assert_safe_test_tenant(test_user)
+        await qdrant_client.ensure_collection(
+            qdrant_client.get_collection_name(test_user)
+        )
 
         # Create test chunks with 768-dimensional embeddings
         chunks = [
@@ -190,7 +207,7 @@ class TestWikiJSIntegration:
     @pytest.mark.asyncio
     async def test_list_all_pages(self, wikijs_client):
         """Test listing all pages with pagination support."""
-        pages = await wikijs_client.list_all_pages(path_prefix="users/")
+        pages = await wikijs_client.list_all_pages(path_prefix=f"users/{TEST_TENANT}")
         assert isinstance(pages, list)
         # Verify each page has expected fields
         for page in pages[:5]:  # Check first 5
@@ -201,7 +218,7 @@ class TestWikiJSIntegration:
     @pytest.mark.asyncio
     async def test_get_taxonomy_structure(self, wikijs_client):
         """Test getting taxonomy structure for a user."""
-        taxonomy = await wikijs_client.get_taxonomy_structure("users/jpmschweitzer")
+        taxonomy = await wikijs_client.get_taxonomy_structure(f"users/{TEST_TENANT}")
         assert isinstance(taxonomy, dict)
         # Each key should be a category, value should be list of subcategories
         for category, subcategories in taxonomy.items():