Providers & Worker 1.4.0

Provider abstraction keeps optional local ranking replaceable without shipping model weights or enabling cloud access.

Providers

Provider	Status	Purpose
`createUnavailableRanker()`	unavailable	Default; policy-order fallback
`createDeterministicRanker()`	deterministic	Offline tests and demos; not a neural model
`createModelRankerPlaceholder()`	unavailable	Future local model hook; no weights
`createWorkerRanker(url?)`	deterministic	Heuristic in a Worker when available

Activation

startAdapt(document, {
  ai: { enabled: true, ranker: 'deterministic' }
});

Worker protocol

The optional Worker receives only the Semantic Snapshot and public candidates and returns ranking data. It has no DOM handle and must not fetch external AI, read cookies, or access storage.

Lifecycle

getAdaptAIStatus(root) reports enabled/provider state. stopAdapt(root) terminates Worker rankers where applicable.