v0.4.2

Bug Fixes

• UNWIND $param write paths (#49): UNWIND $param AS item CREATE/MERGE/SET now works with parameterized lists, literal lists + SET, and per-item MERGE iteration
• startNode(r)/endNode(r) alias collision (#50): RETURN startNode(r).name, endNode(r).name now produces distinct column names
• CALL subquery MERGE scoping (#51): CALL { WITH c MATCH (d) MERGE (c)-[:REL]->(d) } correctly resolves inner MATCH variables
• OPTIONAL MATCH WHERE null preservation (#34b): OPTIONAL MATCH ... WHERE r.prop = "x" preserves null rows when filter doesn't match
• WITH+MATCH+MERGE dispatch: MATCH (a) WITH a MATCH (b) MERGE (a)-[:REL]->(b) now routes correctly
• Functions in SET with property refs: SET n.trimmed = trim(n.name) resolves node properties in function arguments
• SQL alias sanitization (#55): Backtick-quoted Cypher identifiers no longer produce invalid SQL aliases

Test Coverage

• 937 CUnit tests, 46 functional SQL files, 346 Python tests, 245 Rust tests
• New cross-clause hardening suite (38_cross_clause_hardening.sql)
• All 12 historical expected-failure issue repros promoted to passing regression suite
• Issue regression tests added to Python and Rust binding suites

Closed Issues

• #49, #50, #51, #53, #55