# C691 — Consolidate phase and calendar completion

## Question

What causal chain now connects fine phase structure to the Round chronology?

## Inputs

```json
{
  "completed_range": [
    672,
    691
  ],
  "chain": [
    "phase scalar",
    "common calibration",
    "unit-qualified12558",
    "retained macro realization"
  ]
}
```

## Sources

```json
[
  "C672–C690",
  "Supplement A §§4–6,10"
]
```

## Opened utc

2026-09-28T01:14:40.195450+00:00

## Results

```json
{
  "artifact": {
    "path": "deliverables/C691_Interim_Synthesis.md",
    "sha256": "87a846f67f4e545ba4a1bbaf0dbddfe3ad0804a57346e5ee646055e5a63e463a",
    "bytes": 1253
  },
  "completed_steps": 60
}
```

## Finding

Sixty steps now connect the local calendar geometry to the Rounded cumulative family through a common calibrated structure and a retained-component realization. The next explanatory need is the source-conditioned placement of the4346 hinge.

## Reassessment

Reconstruct both supplied regular-MT routes to4346 as anchored maps.

## Checks

```json
{
  "count": true,
  "calibration": true,
  "retained_completion": true
}
```

## Closed utc

2026-09-28T01:14:40.195907+00:00

## Record provenance

Exact record hash: `b780bd8176a9db84bb8d43f7ea3ef05e9d38fd8bbb69eb48d7de922745e35ac3`

Source journal: `Research_Cycles/C0632_C0731/journal.json`