Add `$result` for Return Refinements#145

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rajshivu wants to merge 4 commits intoliquid-java:mainfrom

rajshivu:feature-result-refinement

Commits on Feb 10, 2026

feat: implement support and restore test infrastructure
RajShivu
committed
TestMultiple: restored original
RajShivu
committed

Commits on Feb 11, 2026

Assert: checked assert validation tests
RajShivu
committed
Fix refinement handling in rj grammar
RajShivu
committed