- Link internal/buildcfg.ToolTags variable instead of hardcoding tool tags
- Add comprehensive test cases in demo.go to verify:
- build.Default.Compiler is correctly patched to "gc"
- ToolTags are properly populated from internal/buildcfg
- ReleaseTags are correctly generated
- Validates the go/build patches work as expected
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Co-Authored-By: Claude <noreply@anthropic.com>