fix: Resolve CI failures for v0.7.0 release

Fix lint errors:
- Remove unused Optional import from gitleaks workflow
- Remove unused logging import from trufflehog activities

Fix documentation broken links:
- Update workspace-isolation links to use /docs/ prefix in resource-management.md
- Update workspace-isolation links to use /docs/ prefix in create-workflow.md

Fix benchmark dependency:
- Add fuzzforge-sdk installation to benchmark workflow
- SDK is required for bench_comparison.py import

All CI checks should now pass.

backend/toolbox/workflows/trufflehog_detection/activities.py

@@ -1,6 +1,5 @@
 """TruffleHog Detection Workflow Activities"""
 
-import logging
 from pathlib import Path
 from typing import Dict, Any
 from temporalio import activity