The cwd evidence rule attributed ANY session sharing a checkout with a
PR-linked session, with no time bound - so a repo whose only captured PR
link was pasted once became a black hole: 129 of 131 sessions and a
month of unrelated work (~$7.4K direct, $11.2K displayed) attributed to
one PR, observed live on the desktop Pull requests tab.
Cwd anchors now carry the evidence sessions' own activity window (union
across evidence for the same PR set), and only sessions overlapping that
window plus a 6h pad inherit the PR. The rule's charter is 'a tool
session launched around PR work in this checkout', which is inherently a
same-working-stretch claim; the design's own philosophy (timestamps
narrow, never create) now applies to this rule too.
On the real corpus the row corrected to $450.87 / 21 sessions across the
PR's actual two-day working stretch. Regression pins both directions:
nearby same-cwd session inherits, weeks-later one never does; multiple
evidence sessions widen the window.
