# C889 — Integrate Keys as partial actions on measured paths

## Question

What does the common grammar need to retain after the whole-family tests?

## Inputs

```json
{}
```

## Sources

```json
[
  "C872–888",
  "C831 core grammar"
]
```

## Opened utc

2026-09-28T02:50:29.389320+00:00

## Results

```json
{
  "module": {
    "path": "model/operator_module_summary.json",
    "sha256": "64dbdc45c798c9244bbb69c9b15405cb4711f7ef6a942e5564b189621450624b",
    "bytes": 582
  }
}
```

## Finding

Keys fit the shared grammar as exact anchored actions with explicit domains. The new whole-field tests explain both successful completions and failed grid closure without date repair or a universal transformation group.

## Reassessment

Freeze the new Covenant macrohead and ordered carrier paths.

## Checks

```json
{
  "both_orders": true,
  "required_status": true
}
```

## Closed utc

2026-09-28T02:50:29.389712+00:00

## Record provenance

Exact record hash: `c5d7b98015c108f26fc7e9a1aa8ea02a6f6dc653cde9e7bfe1299ad6dcf832f2`

Source journal: `Research_Cycles/C0832_C0931/journal.json`