[EPIC] Phase 1: Core Graph Operator Translation

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Goal

Achieve 70% query coverage with direct Cypher → KQL graph operator translation

Complexity

MEDIUM - Core translation engine with parser and schema mapping

Key Deliverables

• Cypher parser (ANTLR + openCypher grammar)
• Direct translation engine (MATCH, WHERE, RETURN)
• Variable-length path translation
• Schema mapper (Sentinel tables → graph model)
• Integration test suite

Success Criteria

• 70% of test queries successfully translate and execute
• Pass 500+ openCypher TCK tests
• Translation correctness >95%