COBOL record VALUE capture ignores the plural VALUES keyword (88-level lists) #3943

Found while fixing #3911 (#3940): the engine's VALUE regex in mainframe_boundary._cobol_records matches VALUE but not VALUES. VALUES is the plural COBOL allows for condition-names (88 VALID-CODE VALUES 1, 2, 3., VALUES ARE 'A' THRU 'F'), so such items record no value at all.

Fix: accept VALUE / VALUES, with optional IS / ARE, wherever the value is captured. Keep the #3911 decimal-comma rule: under DECIMAL-POINT IS COMMA, a comma between digits stays in the literal, while comma-space separates list entries. Golden masters will likely move for corpus programs with VALUES 88-levels; re-bless deliberately and list the changes.

Test: 88 X VALUES 1, 2, 3., 88 Y VALUES ARE 'A' THRU 'F'., the singular forms unchanged, and a decimal-comma 88 Z VALUES 1,5 2,5..

🤖 Generated with Claude Code