---
title: "qagen-fix-collection — Mova code model"
description: "Mova code model of qagen/src/fix.rs: components with their labels, obernants and the model text."
url: "https://groupants.elamur.ai/free/en/mova/qagen/src/fix.rs.groupant/collection.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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# qagen-fix-collection

The groupant beside qagen/src/fix.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:** [`qagen/src/fix.rs`](https://github.com/ElamurAI/mova-free/blob/main/qagen/src/fix.rs)
- **source SHA-256:** `f491a1f6223c6912…`
- **covers:** Load checked batches; strict retry-first final raw lookup, gate and render accepted fixes/rejections; compute calls JSON, serialize params, then write four files. (bytes 19591–24995)
- **part of:** [qagen-fix](https://md.groupants.elamur.ai/free/en/mova/qagen/src/fix.rs.groupant/)
- **repository folder:** [`qagen/src/fix.rs.groupant/collection.groupant`](https://github.com/ElamurAI/mova-free/tree/main/qagen/src/fix.rs.groupant/collection.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 source model | [forward](#forward) |
| **ast** | partial | `../syntax.json` |
| **composition** | partial source model | [composition](#composition) |
| **cost** | partial source model | [cost](#cost) |
| **descriptant** | partial source model | [epoch-memory](#epoch-memory) |
| **invariant** | partial source model | [invariant](#invariant) |
| **tests** | partial source model | [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 |
|---|---|---|---|
| `qagen-fix-collection-behavior-complement` | behavior_complement | partial source model | [behavior-complement](#behavior-complement) |
| `qagen-fix-collection-reverse-reconstruction` | reverse_reconstruction | partial source model | [reverse-reconstruction](#reverse-reconstruction) |
| `qagen-fix-collection-raw-priority` | raw_priority | partial source model | [raw-priority](#raw-priority) |
| `qagen-fix-collection-accounting` | accounting | partial source model | [accounting](#accounting) |
| `qagen-fix-collection-anchor-projection` | anchor_projection | partial source model | [anchor-projection](#anchor-projection) |
| `qagen-fix-collection-failure-boundary` | failure_boundary | partial source model | [failure-boundary](#failure-boundary) |

## Model text


### forward
Load checked batches; strict retry-first final raw lookup, gate and render accepted fixes/rejections; compute calls JSON, serialize params, then write four files.

### invariant
Preflight failure leaves all four previous artifacts unchanged. Validated grouping and gate uniqueness ensure fixed<=items and unfixed=items-fixed.

### behavior-complement
Unreadable metadata is Err rather than batches_missing. Accounting parse/overflow failure cannot replace any artifact. Successful publication is not a transaction.

### reverse-reconstruction
Counts and by_reason maps merge item histories; identical aggregate params admit different questions and raw replies. QA retains only accepted rows.

### cost
All rendered artifacts coexist in memory; raw and normalization costs are added per batch. Accounting parses complete calls log. No measured throughput claim.

### composition
Checked grouping -> raw lookup/read -> gate -> anchor-ID projection/optional lemma doubt -> accounting -> JSON -> ordered writes. Strict lookup and checked grouping are essential wiring preconditions.

### raw-priority
try_final_raw gives retry priority; retries counter retains existing existence policy after strict lookup. Races between probes are not prevented.

### accounting
calls_json uses wave18 checked totals; preparation errors propagate before materialization.

### anchor-projection
Explicit gate anchors validated against paragraph; implicit anchors validated by try_new, enabling safe sent_id indexing.

### failure-boundary
Write failures after the first write can leave partial replacement; no lock or atomic multi-file commit.

### checks
Synthetic embedded Rust tests, 1024 independent coverage cases, preflight sentinel artifacts, callback trace and compiled branch/arithmetic controls; debug and release twice, model-loading test explicitly skipped. See parent evidence.md for observed outcomes, not proof.

### epoch-memory
Prospective model was saved before repair on 2026-10-30. Old source failed four library witnesses and one CLI witness. The tie control initially survived because [2,1,2] selects 2 for both first and last ties; the corrected [2,1] witness distinguishes them. Preserve this observation: duplicate-endpoint fixtures can hide tie regressions.

### references
Original project implementation and rule v2: docs/context.md, qagen/src/gate.rs and qagen/src/run.rs. Model conventions: docs/groupants.md, docs/mathematical-modeling.md and docs/mathematical-modeling.md. No external solution code copied.

### limitations
Finite local tests and partial syntax projections, no semantic AST or universal proof. Allocation failure and callback panic are outside successful-return model; filesystem races and write failures can interrupt publication. No live model/teacher/database/corpus used. No useful certified numeric surrogate is attached to these categorical/effectful interfaces; no invented error budget, substitution or speed claim.