Cool project. The bidirectional source-to-AST navigation is the killer combination, clang -Xclang -ast-dump gives you a wall of text that's hard to correlate back to code, especially with C++'s implicit conversions and template instantiations. Being able to click and see exactly what Clang produces is invaluable for anyone writing AST matchers or clang-tidy checks.

I work on a related project called sem (Ataraxy-Labs/sem) that takes ASTs in a different direction — extracting semantic entities from tree-sitter ASTs to build cross-file dependency graphs with git history tracking. Would be curious if you've thought about leveraging Clang's richer AST to do cross-file entity analysis for C++.