correctly scope OF keyword in ARRAY declarations

[michaeldistel]

Summary

The OF keyword in ARRAY [..] OF <type> declarations may not be scoped correctly — it could be missed or fall through to a catch-all rule. Verify and fix.

Example

MyArray : ARRAY [0..9] OF INT;
Matrix  : ARRAY [0..3, 0..3] OF REAL;

OF should be scoped as a keyword (e.g. keyword.operator.of.st or keyword.other.st), not as an identifier.

Acceptance criteria

• OF in ARRAY declarations scoped as a keyword
• Multi-dimensional array syntax (ARRAY [0..3, 0..3]) handled correctly
• OF in CASE ... OF unaffected