# C621 — Finalize the exact interface diagram

## Question

Does the five-node visual retain the distinct paths, generated endpoint and pair adjustment?

## Inputs

```json
{
  "figure": "Actual-to-Rounded cumulative interface",
  "coordinate": "positive BC labels",
  "review": "root visually inspected1400×1250 PNG"
}
```

## Sources

```json
[
  "C570–C572; C618 diagram"
]
```

## Opened utc

2026-09-28T00:39:27.775389+00:00

## Results

```json
{
  "svg": {
    "path": "deliverables/Actual_Rounded_Interface.svg",
    "sha256": "86b6671a4c1a025000ca39443759f41384aeda40da7d05e13d07a7f0b5271043",
    "bytes": 6358
  },
  "png": {
    "path": "deliverables/Actual_Rounded_Interface.png",
    "sha256": "859a68c263d129fd372d2c072151b9cb2c791acdd13414514eeac15b157e683d",
    "bytes": 197120
  },
  "visual_QA": "legible labels; exact24552/13; five cards; unobstructed arrows; generated1404 explicitly labelled"
}
```

## Finding

The figure presents the main bridge without losing the interior-path distinction. It is an exact vector diagram with a checked PNG companion, not a replacement for the source arithmetic.

## Reassessment

Revise the draft using independent review and the completed source/model registers.

## Checks

```json
{
  "exact_junction": true,
  "shared_terminal": true,
  "pair_adjustment": true
}
```

## Closed utc

2026-09-28T00:39:27.777021+00:00

## Record provenance

Exact record hash: `3d5ab923f3431239489d56d350b62ff893060134fbd79ad6cbe026f1ee144a48`

Source journal: `Research_Cycles/C0532_C0631/journal.json`