Module bisect 

Which tick made already-passing acceptance tests pass: a fact found by running the tests, never a guess from diffs.

The feature branch’s tick commits are searched by bisection — at most five runs, each with the acceptance files overlaid on the commit’s tree in a scratch worktree of its own under the state directory, sandboxed, under the checks’ deadline. A run that builds and fails says “not passing there”; anything that cannot say — a worktree that cannot be made, a run that times out or prints nothing readable — makes the answer “could not be determined”, never a task’s name. For a section added to a story’s file only that section’s tests run. No model call; the verdict is never changed.

Structs

Found

The search’s answer and the runs it took.

Search

What the search needs.

Enums

Probe

What one run at a commit said.

Functions

budget

The run budget for n ticks: min(5, ceil(log2(n + 1)) + 1).

prune

Removes the scratch worktrees a crashed search left behind: only those whose process is gone, each by its own git worktree remove — never another live search’s, never the repository’s other worktrees.

search

Searches the feature’s ticks for the first one at which the acceptance tests pass (they pass on the branch’s tip: the red run said so).

search_with

search over ticks (oldest first) with probe(commit, n) telling what the tests did at a commit. Any undetermined probe ends the search with no answer.

section_command

The command that runs only the tests added declares: argv with the runner’s own filter (None: no filter is known for the runner — the search then cannot run only the section).