RESULT: SUCCESS

FILES CHANGED:
- jq_interpreter/evaluator.py
- tests/test_core_004_truthiness_comparison.py

SUMMARY:
Implemented jq truthiness, structural equality, numeric equivalence, and total ordering. Added focused tests.

Verification: 57 pytest tests passed; scoped conformance: 57 passed, 0 failed, 0 errored.

BLOCKERS:
- None