v0.14.9

Features

• [FEATURE][web] Added TransactionProver.newCallbackProver(jsFn) — a JS-callable prover variant whose prove() dispatches to a Function returning Promise<Uint8Array>. Wire format matches RemoteTransactionProver (tx_inputs.to_bytes() in, ProvenTransaction::read_from_bytes(..) out), so a JS-side bridge (e.g. a Capacitor / Tauri / Electron native-prover plugin) slots in behind the existing dispatcher unchanged (#149).
• [FEATURE][web] Added ClientOptions.useWorker?: boolean (default true) — opt out of the WebClient's Web Worker shim. The shim serialises the prover via TransactionProver.serialize() (format "local" / "remote|{endpoint}"), which has no encoding for the callback variant — the closure is silently dropped and the worker spawns its own in-process WASM prover. Setting useWorker: false skips the shim so the JS function reaches wasmWebClient.proveTransactionWithProver(...) with the closure intact. Required for any consumer passing a newCallbackProver (#149).
• [FEATURE][react] Added MidenConfig.useWorker?: boolean — mirrors the new ClientOptions.useWorker on the React <MidenProvider>, plumbed through to both WebClient.createClient and WebClient.createClientWithExternalKeystore (#149).