feat: expose SDK model registry exports

[AdirAmsalem]

Expose SDK-owned model registry metadata so consumers can rely on canonical model names, alias normalization, and filtered model listings instead of duplicating model literals.
This keeps existing SDK model factories working while adding stable helpers for registry consumers and preserving *-latest as server-resolved moving targets.

import { isCanonicalModel, listModels, resolveCanonicalModelAlias } from "@decartai/sdk";

const canonical = resolveCanonicalModelAlias("lucy-pro-v2v"); // "lucy-clip"
const videoModels = listModels({ kind: "video", canonicalOnly: true });
const isCanonical = canonical !== undefined && isCanonicalModel(canonical);

Validated with unit tests, typecheck, and build.

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Note

Medium Risk
Expands the SDK’s public surface area around model identifiers and adds new alias/listing logic; low runtime risk but moderate compatibility risk for consumers depending on prior exports/types.

Overview
Adds public model-registry exports from the package root (CanonicalModel, modelAliases, isModel/isCanonicalModel, resolveModelAlias/resolveCanonicalModelAlias, and listModels) so consumers can normalize model inputs and enumerate available models by kind.

Introduces explicit canonical model name schemas (excluding *-latest and deprecated aliases) while keeping existing model factories and broader model validation accepting legacy/latest names; unit tests are expanded to cover the new helpers, listing behavior, and to assert raw zod schemas are not exported from the root.

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commit: a3973ff