repo.files re-read and re-parsed the B-card baseline for every delta check-in — 79% of the mint phase on pkgsrc. Repository.filesMemo takes a caller-owned BaselineMemo keyed by artifact name; consecutive deltas over one baseline borrow the parsed manifest and read nothing. On a 30k-file history of 300 deltas, source enumeration went from 10s to 0.3s and the conversion from 13.5s to 3.7s, every check-in hash identical. The memo holds a heap entry with a stable address; the optional-by-value form did not persist under ReleaseFast. Closes zit#167. check-in: c80728261e user: dmestas tags: trunk

The rebirth arm of import-fossil required a zit store, so the verb that says 'import a fossil' could not take one. It now accepts the fossil's sync URL like --compatible does, cloning a transient flat store beside DIR and removing it after; a local store stays accepted. The zit->zit conversion gets its proper home as 'zit submanifest convert SRC DEST', beside 'enable', which now says what it does not do: existing check-ins stay flat, and fossil peers receive nothing new from the next commit. Diagnostics carry the verb the operator typed. Closes zit#168. check-in: abd850dc4c user: dmestas tags: trunk

The gate replayed every commit through the from-scratch tree builder three times to predict what the conversion itself measures, and on pkgsrc that was 14 of 26 hours before a byte was written. The conversion writes a new project beside an untouched source, so the honest evidence is the converted store: the summary now reports its bytes against the flat source's. The partition parameter comes from --k or the tip sweep; a history no k partitions is refused, as 'submanifest enable' refuses it. 'zit submanifest analyze --replay-all' keeps the model for anyone who wants it first. Closes zit#129. check-in: 04d944c1dd user: dmestas tags: trunk

Every check-in went through artifact.buildTree from scratch, so a wide tree cost its whole file set per commit against a few changed slices actually written. The converter now applies each check-in's change set over its primary parent's root with TreeEditor — the commit verb's builder — keeps a parent cache released as children consume it, interns the retained cards, runs the pair proof through the run-scoped flatten memo, and parses each source manifest once. The Git importer's LogTreeStore moves to a shared module. Output is unchanged: every check-in hash matches the from-scratch build on libfossil and on a 30k-file synthetic history. Refs zit#167. check-in: 5e0155427e user: dmestas tags: trunk

The converter only stripped PGP armor, so an SSH-signed check-in re-minted with its envelope inside and failed its own verify silently. Verification now runs as each pair is minted, the census counts come from the first pass instead of a second corpus read, and --k narrows the gate's replay to one arm (skipped with --force). Each phase reports its wall time on stderr; the summary points at 'zit pack'. Closes zit#155. check-in: 75c8669553 user: dmestas tags: trunk