world-quant-adapters
The groupant beside world/src/quant.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
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 |
| ast | partial | ../syntax.json |
| composition | partial source model | composition |
| cost | partial source model | cost |
| descriptant | partial source model | epoch-memory |
| invariant | partial source model | invariant |
| tests | partial source model | 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 |
|---|---|---|---|
world-quant-adapters-behavior-complement | behavior_complement | partial source model | behavior-complement |
world-quant-adapters-reverse-reconstruction | reverse_reconstruction | partial source model | reverse-reconstruction |
world-quant-adapters-retry-selection | priority_relation | partial source model | retry-selection |
world-quant-adapters-budget-coupling | resource_boundary | partial source model | budget-coupling |
Model text
Prompt/reply encoding, dataset readers, teacher batching and stats, including legacy tests.
forward
prompt numbers sentences by ID; split_blocks overwrites duplicate IDs. load_set filter_maps valid records; load_done keeps last valid JSONL record per ID. vmm_run checks first replies, retries red records once and accepts retry only when green; stats counts green scripts.
invariant
Sentence-prefix validation applies only to numeric literals. References read the current command-order state and carry no sentence provenance. Thus @2 set a.x=19 followed by @1 set b.x=a.x and @1 ask b.x remains green when 19 occurs only in sentence 2. This is a documented current limitation, not complete temporal provenance or a proposed behavior change.
Teacher responses and I/O outcomes are external inputs. Green status derives from check; red retry retains original result. Durable exactly-once append is not guaranteed.
cost
For positive batch, ceil(items/batch) chunks and at most one retry per processed chunk. Bytes and records govern parse/storage; latency and monetary cost depend on external results and scheduling.
composition
Parsing feeds ordered execution; literal collection precedes evaluation against state, and check merges parse errors, execution diagnostics and gold inequality. Text extraction is an external exact dependency. Numeric-origin errors do not suppress effects, unlike evaluation and anchor errors; a parent must preserve this distinction. Dataset/teacher adapters do not establish script semantics.
epoch-memory
2026-10-30: regressions first demonstrated backward-anchor number leakage and destination credit from missing transfer sources. Prefix endpoints now restrict each command to its own sentence prefix while preserving incremental extraction; missing-source transfer skips effects. Diagnostic-only literal errors remain unchanged. No corpus or teacher calls.
checks
See ../tests.md and native quant::wave8_models tests. Models are source-derived partial relations, with finite evidence rather than general proof. Syntax projection excludes macro expansion, name resolution and inferred types. No executable approximant: exact gates and categorical choices have no justified percentage metric here.
behavior-complement
In adapter trace universe, red retry cannot replace an original as round-2 green. Exactly-once persistence and strict cap containment are not claimed absent failures; ignored write errors and concurrent calls remain possible.
reverse-reconstruction
Saved script/round cannot recover discarded first scripts, failed responses or overwritten duplicate IDs. Retain all compatible prior records and reply preambles.
retry-selection
Given first and optional retry observations, select retry iff present and errors empty, otherwise first. This is source inspection; no teacher calls were made.
budget-coupling
Budget check and charge occupy separate mutex intervals; retry has no fresh check. Parent must retain in-flight spend, not infer future total solely from current spent.
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