# Typed Current Projection

> One machine-readable current.toml declaring exactly which documents, artifacts, and values are current, each with its meaning.

**Tier:** 1 · **Normative weight:** implements `TM-CUR-001`; supports `TM-MOD-004`
**Requires:** [Status Lines](/docs/truth-machine/kit/status-lines/)

## Problem it removes

"What is currently deployed / selected / true?" has as many answers as
there are readers. The newest file wins, or the most confident document
wins, and nothing distinguishes the selected state from the five preserved
alternatives that still parse.

## Mechanism

One `current.toml` holding the repository's declared current selection:
a schema version, the workspace identity, the repository's canonical branch
and human index, and typed arrays of what is current — records with their
expected status markers, artifacts with their exact digests. Every entry
carries a `meaning` field, so a later mismatch reports its significance,
not just two differing values. The file gives the current selection a
single deterministic answer (`TM-CUR-001`) and each declared thing a stable
identity — the current-state clause of `TM-MOD-004`; evidence and
publication identities arrive with the Tier 3–4 packet patterns.

The projection is *declared*, not observed: it states what should be true,
and changing it is an ordinary reviewed edit. Machinery that checks the
declaration is the next pattern, not this one.

## Cost

Authoring: an hour to decide what "current" even enumerates — usually the
most valuable hour of the tier. Per change: one TOML edit per real state
change, in the same commit as the change itself. Per session: none.

## Do not adopt when

The repository has no state beyond its source — nothing is deployed,
selected, or current in any sense a commit does not already capture.

## Evidence

Assessed in [inference-ops](/docs/truth-machine/implementations/inference-ops/)
and [cloud-ops](/docs/truth-machine/implementations/cloud-ops/); the same
shape governs the
[kinra-corpus](/docs/truth-machine/implementations/kinra-corpus/) record
selection.

## Template

[`templates/current-projection/current.toml`](/docs/truth-machine/templates/current-projection/current.toml),
typed by
[`projection.schema.json`](/docs/truth-machine/schemas/projection.schema.json) —
validate the projection whenever it changes; a typo in the file that answers
"what is current" should fail before the read runs.

## Related patterns

[Human Index](/docs/truth-machine/kit/human-index/) is the same selection
rendered for people; [Governed Read](/docs/truth-machine/kit/governed-read/)
holds the two in agreement mechanically.