writeonce/docs/00-git-commit-history.md

Git commit history — features and their cherry-picks

Reference for which commits carried which feature onto master, so a feature can be traced, re-reviewed, or reverted as a unit long after the history it was written in has moved on.

The workflow this file records

1. Development happens on dev. Not on master, and not on a fresh branch per feature.
2. Every commit on dev carries a feature-specific unique prefix, written as the conventional-commit scope — feat(db2-keys): …, fix(db2-keys): …. The scope, not a bare leading word, so the repo keeps the feat/fix/docs type it has used throughout. One prefix per feature, reused by every commit belonging to it, which makes a feature's commits selectable with git log --grep without reading a single diff.
3. When the feature is ready — complete, not merely green — git checkout master and cherry-pick that feature's commits, in order.
4. Record the result below: the dev hashes, the master hashes the cherry-pick produced, and the date. The two differ — a cherry-pick makes new commits — and that mapping is the whole reason this file exists.

Ready means the same gate as always: no half-implemented feature reaches master. An annotation the compiler accepts but does not honour counts as broken, however green the suite.

Prefix registry

One row per feature. The prefix is claimed here before its first commit, so two features cannot collide.

Prefix	Feature	Status
commit-history	this file and the workflow it records	✅ on dev
db2-keys	databasev2 2 — resident: keys storage and readers	on dev (125bd09, 08abd09, 0c97fa4, f606fc9). Not ready: the loader still refuses the annotation, and updates on such a table are refused rather than implemented
porch-store	porch store tables, Limiter and Idempotent middleware (Phases A, B, C)	on dev (519d411, 5b1e82a, aee7926). In progress: Phase C was uncommitted work from a parallel session, committed as-is, and calls json.decode/json.encode with no use json import
query-corpus	databasev2 query-grammar corpus #1	on dev (4c82461). Conclusion was "no new grammar needed"

Cherry-picks onto master

Newest first. dev hash is the original; master hash is what the cherry-pick produced.

Date	Prefix	Feature	dev → master
—	—	nothing cherry-picked onto master under this convention yet	—

Before this convention

Work up to 2026-08-29 landed on master by merging feature branches, so those commits keep their original hashes and have no entry here. git log --merges master is the record for that period.

The db2-keys and porch-store commits are the seam: they were written on porch-store-middleware before this convention (18ce4d5, f9c36ef, 11a92df, 91411ae, 6c8550a, 01af1b9) and were replayed onto dev with prefixed titles. The replay was verified identical, not merely applied — after it, git diff porch-store-middleware dev over the whole tree was empty.

On 2026-08-29 every other branch was consolidated so only dev and master remain. Three could not be replayed and were preserved as annotated tags instead — nothing is lost, and each tag's message says why:

Tag	Why it is not on dev
archive/cleanup-pre-existing-changes	Aug 10, based on an Aug 8 commit. Carries crates/ and Cargo.toml — the Rust runtime master has since deleted entirely. Replaying it would resurrect it.
archive/ipc-attach	Iteration 9c attach channel. Refactors wo_row_insert/wo_row_update_field into engine-encoded cores; dev rewrote those same functions for db2-keys. Two overlapping refactors of one function, ~250 conflicted lines.
archive/keypair-auth	Iteration 9d, builds on 9c — blocked by the same overlap.

The 9c/9d hazard is specific and worth stating: that branch's contract transfers ownership of vals on failure as well as success, while dev's keys-resident arm returns early without freeing. A merge that compiles and passes could still leak or double-free. Reconciling them is an integration task, not a conflict resolution — recover the work with git checkout -b <name> archive/ipc-attach when it is scheduled.