Elamur Groupantsmova-whale-roles
The groupant beside tools/whale/src/roles.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 | Forward approximant |
| ast | partial | syntax.json |
| composition | partial | Composition |
| cost | partial | Cost |
| descriptant | present | Descriptant |
| invariant | partial | Invariant |
| tests | finite evidence | tests.md |
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 |
Model text
Descriptant
Crab ExternalRoleHandler adapter for Whale pool and swarm. Source: tools/whale/src/roles.rs. Public, domain-agnostic: concrete prompts, schemas, gate parameters and deployments come from pinned configuration.
Forward approximant
status(config, swarm): swarm::status(swarm) when Crab has a swarm configuration, else pool::status(config); start(config, swarm): swarm::start or pool::start; marker: pool::marker. serve installs WhaleRoles through mova_crab::angel::serve_with_roles.
Invariant
The adapter adds no path or program choice of its own; every effect is gated by the delegated module's pins and Crab's request/journal gates.
Cost
O(1) dispatch plus delegated cost.
Composition
Top of the public Whale tree; installed by an embedding Crab binary or mova-whale crab.
behavior_complement
Excluded: any operation without trusted server-side configuration (relative or missing paths fail closed); swarm markers (handled by Crab itself). Evidence status: source-derived model with finite checks, not a proof.
reverse_reconstruction
A returned status admits the delegated module's compatible states; the dispatch branch is recoverable from whether a swarm configuration was present. No unique inverse is claimed.
tests.md
1 test: delegation fails closed without trusted configuration.
Command: cargo test --manifest-path tools/whale/Cargo.toml --offline --locked (74 tests, fake teachers/executables; two identical runs on 2026-11-03). These are finite fixtures; no live run, model call or deployment was exercised.
This page in Markdown → https://md.groupants.elamur.ai/free/en/mova/tools/whale/src/roles.rs.groupant/