---
title: "study-prepare-finish — Mova code model"
description: "Mova code model of tools/enrich/src/study.rs: components with their labels, obernants and the model text."
url: "https://groupants.elamur.ai/free/en/mova/tools/enrich/src/study.rs.groupant/prepare-finish.groupant/"
---
Elamur: [Mova](https://md.mova.elamur.ai/free/en/) · [Dictionary](https://md.dictionary.elamur.ai/free/en/) · [Research](https://md.research.elamur.ai/free/en/) · **Groupants**

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# study-prepare-finish

The groupant beside tools/enrich/src/study.rs in the Mova repository: what the code computes, what it never does, how to go back from its outputs, its invariants, cost and checks.

## Facts

- **kind:** groupant_fragment
- **status:** partial source bound model
- **source:** [`tools/enrich/src/study.rs`](https://github.com/ElamurAI/mova-free/blob/main/tools/enrich/src/study.rs)
- **source SHA-256:** `8bdc286a3d410509…`
- **covers:** Prepared review and candidate finish (bytes 18473–29029)
- **part of:** [study-orchestrator](https://md.groupants.elamur.ai/free/en/mova/tools/enrich/src/study.rs.groupant/)
- **repository folder:** [`tools/enrich/src/study.rs.groupant/prepare-finish.groupant`](https://github.com/ElamurAI/mova-free/tree/main/tools/enrich/src/study.rs.groupant/prepare-finish.groupant)
- **repository commit:** `48f2e6f74146`

> **Implementation material.** A Mova code model describes this code at one source revision: partial models, finite checks and their stated scope. It is not a reviewed general exposition, and its labels are shown as written, never raised.

## Components

| component | label | where |
|---|---|---|
| **approximant** | partial | [forward](#forward) |
| **ast** | not materialized |  |
| **descriptant** | present | [epoch-memory](#epoch-memory) |
| **invariant** | partial | [invariant](#invariant) |
| **tests** | partial bounded checks | [checks](#checks) |

## Obernants

The typed relations around the forward model: the behaviour complement (what the code never does), the reverse reconstruction (every input compatible with an output) and specialised views.

| id | type | label | where |
|---|---|---|---|
| `study-prepare-finish-forward` | forward_relation | partial source model | [forward](#forward) |
| `study-prepare-finish-behavior-complement` | behavior_complement | partial source model | [behavior-complement](#behavior-complement) |
| `study-prepare-finish-reverse-reconstruction` | reverse_reconstruction | partial source model | [reverse-reconstruction](#reverse-reconstruction) |
| `study-prepare-finish-coupling` | interaction_relation | partial source model | [coupling](#coupling) |

## Model text


Partial source model, 2026-10-29. The raw Rust file remains authoritative. AST is not materialized; byte ranges are snapshot anchors, not semantic proofs.

### forward

prepare_next requires staged parent, bound seven-output receipt, valid context, at least three nonfrozen sentences and current dictionary before prompt budgeting and directory creation. finish_improve validates baseline/review/candidate lineage, binds four assessment observations and emits an evaluated-candidate receipt.

### behavior-complement

Success with a wrong receipt parent, modified named output, insufficient nonfrozen capacity, changed prior-state hash or an assessment bound to another model is excluded by guards. A preexisting partial directory is possible and fails verification; it is not impossible behavior.

### reverse-reconstruction

A cycle receipt constrains two learner identities, two assessment identities and four grades plus their compatible artifact histories. Existing learned/cross-exam files may have arisen earlier: receipt observations cannot reconstruct unique process attempts or prove a teacher request occurred in this invocation.

### coupling

Sequential relation is prepare; external review/stage; finish, with retained study between review and candidate assessment. Cached artifacts are verified on reentry. Failure retains a prefix, with no rollback; final receipt equality is required if already present. teacher_calls=1 describes outer-cycle accounting rather than an observed call inside finish.

### composition

Scope spans prepare_next, improve wrappers and finish_improve. Filesystem/process failure partitions and environment races remain unmodeled. Cost includes reading/hashing artifacts, optional learner construction and up to two missing cross-exam subprocesses. Existing binding and assessment tests cover portions; no new end-to-end finish or teacher test was executed.

### invariant

Forward and reverse observations refer to the same fixed source snapshot and dependency behavior. Ordering is deterministic for fixed inputs; filesystem/environment stability is assumed where relevant. The complement is an inner bound relative to this fragment's input/output universe.

### checks

See the file-level tests.md for executed bounded checks and limits. The first three model relations are specifications; tests sample correspondence rather than proving all inputs. No expanded semantic AST or executable general inverse solver exists.

### epoch-memory

2026-10-29: retained the file-level 23 models and added this finer scope. An initial incidence oracle incorrectly treated three-byte fox as a token; the existing tokenizer rejects it. Corrected the independent membership matrix rather than changing production behavior. This is a model correction, not an algorithm defect.