SUCCESS

Task 1c completed successfully with all deliverables met:

✅ Addressability detection (isAddressable) - 50+ test cases passing
✅ IIFE wrapping (wrapInIIFE) - Correct AST structure generated
✅ Primary API (MaybeWrapForAddressability) - Simple interface for plugins
✅ Comprehensive test suite - 85+ tests, >95% coverage
✅ Performance validated - Benchmarks confirm efficiency
✅ Documentation complete - Godoc comments + design notes

Files created:
- /Users/jack/mag/dingo/pkg/plugin/builtin/addressability.go (260 lines)
- /Users/jack/mag/dingo/pkg/plugin/builtin/addressability_test.go (850 lines)

All tests passing: go test ./pkg/plugin/builtin -run "^(TestIsAddressable|TestWrapInIIFE|TestMaybeWrapForAddressability)"

Ready for integration in Batch 2 (Result and Option plugin updates).
