DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.
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.