Merge pull request #14 from nayname/execution_governance

fix(middleware): skip async enhancement when no event loop running

test: skip LLM integration tests when ANTHROPIC_API_KEY not set

fix(planner): log malformed LLM output entries instead of silent skip

docs: intentional mutability of EnhancedExecutionPlan

docs: move reference schema out of config

style: fix naming conventions and add EXPERIMENTAL docstring

fix: remove redundant import guard and impossible test case

fix: moved docstring to correct place

docs: added docstring that Exutor as a dead code now

fix: Making create_enhanced_plan async

fix: Move jsonschema to core dependencies

fix: Harden LLM enhancement with allowlist sanitization and schema validation

Make plan enhancement failures explicit

fix: Lazy-load Anthropic client and isolate LLM enhancement failures