Review for code that writes itself
The bottleneck is no longer writing code — it is daring to land it. st is a stacked-diff platform on raw git: every stack carries a mandatory evidence pack, risk tiers gate landing, and there is exactly one shared store. Nobody keeps a copy.
Stacks, not pull requests
A stack is a set of refs in one central git store — one ref per diff. No PR objects, no platform lock-in, git hosting stays boring and replaceable.
Evidence before review
An agent cannot submit without saying why, what changed, how it was verified, what is not covered, and the blast radius. Reviewers judge a brief, not a vibe.
Thin clients, zero clones
Partial clone and sparse checkout on the author side; reviewers read derived data computed once on the server, keyed by commit.