A new telemetry metric (tengu_repo_text_file_size) calculates the total byte size of text source files in the repo using git ls-tree. It counts files with common code extensions (.ts, .py, .js, .go, .rs, etc.) to help understand repository scale.
Evidence
Metric calculation (search for "repoTextSize")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.