ADR 0573 §2: a module builds against the latest published version of
each mesh package it uses, and a package's trunk merge moves every
dependent (issue 1585, S13). The bridge reads the packages each go.sum
names, the indexer keeps them and takes each one's trunk merge into the
fingerprint, a candidate takes a group member's head instead, and the
builder's ask carries the versions so the build module writes them.
Claude-Session: https://claude.ai/code/session_01NcbgfJ9Gum47zkFKWRaovL
mesh-catalog's 140 module directories are 420 forge reads per merge, past the 30 s bound
of a handled event while the forge is busy: the merged message of #535 timed out on every
try, and #3fb7951 needed seven (issue 1458 met the same kind at 131). A tree hash names its
bytes, so what was read at a tree is kept in the new state inputs and in memory, and a
merge reads only the directories it changed.
jschoubben