JS-046: be put/delete/post as pure-JS extensions

Now: DONE

Reproduce the three reflog-WRITE verbs — be put, be delete, be post — as bin/{put,delete,post}.js, output-equivalent to native, the way JS-027 did status and JS-038 did get. PUT/DELETE append intent rows (the wt .be ULOG + the keeper refs ULOG); POST consumes them to build a tree+commit, write a keeper pack-log, and FF-advance the ref. libabc+libdog ONLY — keeper/graf/sniff stay unlinkable, reimplemented in JS. Method: Issues.

Input

Context

status/get were READ ports; these are the first WRITE verbs. PUT/DELETE are POST's prerequisite (POST commits their staged set). Native: sniff/PUT.c, sniff/DEL.c, sniff/POST.c; store keeper/REFS.c, format keeper/KEEP.h.
Verb semantics: Verbs, PUT, DELETE, POST. Put→post flow is be put ./f && be post '#msg'. Two prior write precedents exist in JS: get.js::writeWtlog/appendWtlog and ingest.js::writeUlog.

Goals

bin/put.js/bin/delete.js/bin/post.js byte-equivalent to native on the LOCAL path (rows, file mtimes, REFS, banner); shared bin/lib/* writers.
Exactly ONE new native leaf: io.setMtime over a new abc/FILE utimensat wrapper (JS-047). Everything else is pure JS over the bound abc/dog surface.

Constraints

libabc+libdog ONLY; NO keeper/graf/sniff binding (reimplement in JS).
We do NOT touch PATCH. POST is FF-or-refuse: THROW where native would rebase/merge (non-FF advance, absorbed-patch "theirs" trees, the cascade).
Wire push (//remote) deferred; the local path lands first.

WIP

Design decisions

Native leaves wrap abc/dog only; ref resolve/advance, pack-log+idx framing, classification, the wire convo all reimplement in JS (the get/status pattern).
Non-FF POST → POSTNOFF (refuse); graf rebase is unreachable without a binding (sole future escape: a pure-JS WEAVE rebase over the already-bound dog/WEAVE).

TODOs

JS-047 io.setMtime (abc/FILE utimensat leaf) — LANDED ea9de45b+4fd1d639.
JS-048 bin/lib write-side: wtlog appender + refs writer — LANDED 3ce8aee5.
JS-049 bin/put.js + bin/lib/stage.js — LANDED e6e47128.
JS-050 bin/delete.js (reuses stage.js) — LANDED e0f79ff0.
JS-051 bin/post.js + decide/commit/conflict (FF-or-refuse) — LANDED 032debec.

Blockers and bummers

JS-049/JS-050/JS-051 ← JS-047+JS-048. JS-050 ← JS-049 (stage.js). JS-047+JS-048 are file-disjoint → start concurrently.

Outcome

ALL FIVE children landed 2026-06-22 (hashlets above); umbrella closed (audited 2026-07-07).
Code since migrated to the beagle-ext be/ shard (08a58be0 dropped the beagle bin/ dup): today be/verbs/{put,delete,post}/*.js + be/shared/{stage,conflict,ulog,store}.js; parity suites in be/test/{put,delete,post} (put 10 cases, delete 8, post 10).
POST later grew beyond FF-or-refuse (patch-absorb cases) under later tickets; the wire push (//remote) landed separately via GIT-019.