roundtrip-tests-synthetic_residuals

The groupant beside tools/roundtrip/src/tests.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	approximant
ast	partial	`../syntax.json`
cost	partial	invariant-and-cost
descriptant	present	descriptant
invariant	partial	invariant-and-cost
tests	bounded checks	tests

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
`behavior_complement`	behavior_complement	partial source derived model	behavior_complement
`reverse_reconstruction`	reverse_reconstruction	partial source derived model	reverse_reconstruction
`residual_witness`	residual_witness	partial source derived model	residual_witness
`scope_precondition`	scope_precondition	partial source derived model	scope_precondition
`resource_boundary`	resource_boundary	partial source derived model	resource_boundary
`observation_projection`	observation_projection	partial source derived model	observation_projection

Model text

descriptant

Synthetic residual witnesses

2026-10-31 epoch: source scope bytes [883,4672); Three initial fixtures cover projective orders, parsed-realized scripts, and world dedup/sentence reconstruction; all avoid the optional model loader.

No annotator/model loading, live corpus, full suite, teacher, GPU or persistent-learning evidence. No executable percentage surrogate: categorical codecs/effects need a useful metric before future caps 1/2/5/10%.

approximant

Synthetic residual witnesses

Three initial fixtures cover projective orders, parsed-realized scripts, and world dedup/sentence reconstruction; all avoid the optional model loader.

Domain: bounded synthetic values, valid source-specific coordinates, nonoverflowing counts, available allocation; fixed environment controls. Relations are source-derived partial models with finite checks, not universal proofs.

catalog

behavior_complement

Subject: roundtrip-tests-synthetic_residuals, source hash 7d1dbfa26a29fb87a9562f16de3dfbe0542e87b7db28ef675a358a9471f3153c, transition observation.

For Synthetic residual witnesses, excluded transitions violate the stated scoped rule: Three initial fixtures cover projective orders, parsed-realized scripts, and world dedup/sentence reconstruction; all avoid the optional model loader. This is an inner source-derived exclusion under the domain, not a complement of arbitrary unseen runtime behavior.

Evidence: external wave32 rt_core receipt includes native-commands.json, exact named outcomes twice debug/twice release, raw status/log files, compiled production controls with byte restoration and paired syntax. Only named synthetic helpers execute; model_path/export and live CLI paths have representation/source evidence.