Create an effort from a plan artefact and an initial PERT estimate.

Add a slice. One added while the effort is active is scope growth.

Close a slice against its pull request.

Drop a slice that turned out to be unnecessary.

Rename a slice.

Start an interval. Refused if one is already open.

Close the open interval.

Attach meeting participants or a note to an interval after the fact.

Correct an interval's bounds. Appends; never rewrites.

Declare time not spent working. Retroactive by design.

Record a revised estimate, typically when a slice is inserted.

Record the final plan and the counterfactual estimate against it.

Copy commit metadata from a working tree into the store.

Record the durable commit that landed on the default branch.

Map a rewritten commit id onto its replacement.

Mark an effort done.

Prior efforts with their summaries and estimates, for comparison. No actuals.

What is clocked in, and since when.

One near-raw row per effort: estimates, wall hours, slice counts.

One effort's full event history.

Aggregate calibration, or an honest refusal when there is too little data.