batch_fetcher 0.1.0

Coalesces per-item value lookups into batched requests, with debouncing, per-id caching, retry with backoff, and typed per-id state.

0.1.0

• Initial release: BatchFetcher, BatchScope, BatchKey, BatchOutcome, the sealed FetchEntry states, RetryPolicy / ExponentialBackoff / NoRetry, SettlePolicy / SettleWhen, BatchFetcherConfig, BatchFetcherObserver and the injected Clock.
• Adds the batch_fetcher_testing library: FakeClock, ScriptedRequest and RecordingObserver. No new dependencies — it works under both test and flutter_test.