fix: resolve ruff import sorting violations in test files

Auto-fix import ordering issues introduced by psycopg import additions:
- Sort imports in e2e and integration test files according to ruff I001 rules
- Maintain functionality while ensuring code quality standards

This resolves the Code Quality job failures and restores lint compliance.

Infrastructure fix complete: All exit code 127 errors eliminated ✅
Test reliability improved: Database tests skip gracefully ✅
Code quality maintained: Import sorting compliant ✅

🤖 Generated with [Claude Code](https://claude.ai/code)

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

Author: MementoRC

tests/e2e/test_e2e_basic_workflow.py

@@ -3,8 +3,8 @@
 import tempfile
 import time
 
-import pytest
 import psycopg
+import pytest
 
 from src.uckn.core.organisms.knowledge_manager import KnowledgeManager
 

tests/e2e/test_e2e_knowledge_lifecycle.py

@@ -3,8 +3,8 @@
 import tempfile
 import time
 
-import pytest
 import psycopg
+import pytest
 
 from src.uckn.core.organisms.knowledge_manager import KnowledgeManager
 

tests/integration/test_centralized_architecture.py

@@ -4,8 +4,8 @@
 from datetime import datetime
 from pathlib import Path
 
-import pytest
 import psycopg
+import pytest
 
 from src.uckn.core.organisms.knowledge_manager import KnowledgeManager
 from src.uckn.storage.chromadb_connector import ChromaDBConnector