Interesting project. The thing I'd be most curious about in day-to-day use is freshness: when you save a file in a mixed-language repo, do you incrementally invalidate/rebuild just the affected AST + edge set, or is the graph eventually consistent until a background reindex catches up? The initial index numbers are great, but for editor/MCP workflows the make-or-break issue is whether "who calls this now?" is still accurate a few hundred ms after a refactor.