- Replace isStringType with isStringPtrType to properly validate that only *string type variables can be rewritten with -ldflags -X
- Remove maxStringTypeDepth constant as it's no longer needed
- Update tests to reflect the new function name and add test case for valid *string type
- Fix compileGlobal to use gbl.Type() for accurate type checking
This addresses the review feedback that Go only allows -X rewrites for the basic string type, not derived types like "type T string".
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Co-authored-by: cpunion <8459+cpunion@users.noreply.github.com>
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