📦 NPM: https://www.npmjs.com/package/@qvac/sdk/v/0.12.1

This is a patch release on top of v0.12.0. It surfaces two new error classes so callers can distinguish a crashed bare worker from an in-flight call cancelled by SDK shutdown, and it fixes a Qwen 3.5/3.6 tool-call regression where capitalised booleans were silently dropping the entire tool call.

New APIs

Distinguish bare worker crashes from shutdown cancellations

Calls made through a bare worker (e.g. sdk.embed, sdk.complete) previously rejected with a generic RPC error if the worker process died mid-request or if sdk.close() was called while the request was in flight. Both cases looked identical to callers, so retry/UX logic had to guess.

v0.12.1 introduces two structured RPC errors that propagate from the worker bridge:

• WorkerCrashedError — the bare worker died unexpectedly. Exposes exitCode and exitSignal so you can tell a SIGKILL from a clean non-zero exit and decide whether to respawn.
• WorkerShutdownError — the SDK is shutting down (sdk.close() was called) while this request was still in flight. Safe to swallow on intentional teardown; surfaces an actionable label for callers who want to log it.

import { WorkerCrashedError, WorkerShutdownError } from "@qvac/sdk";

try {
  await sdk.embed({ modelId, text: "hi" });
} catch (err) {
  if (err instanceof WorkerCrashedError) {
    // err.exitCode, err.exitSignal — worker died, decide whether to respawn.
  } else if (err instanceof WorkerShutdownError) {
    // SDK is shutting down; this call was cancelled by close().
  }
}

Existing catch (err) blocks that don't narrow by class continue to work unchanged — the new classes both extend the same RPC error base.

Bug Fixes

Qwen 3.5/3.6 tool calls with capitalised booleans no longer drop silently

Qwen 3.5/3.6 (the default tool-calling family) intermittently emits Python-style True / False for boolean parameters instead of the JSON-strict true / false. The qwen35 parser only accepted the exact lowercase literals, so coercion threw, the parser returned an empty toolCalls array, and the raw <tool_call>…</tool_call> markup leaked into the assistant's final text answer — there was no PARSE_ERROR, the tool call just vanished.

v0.12.1 lowercases the value before comparing in the boolean coercion path, so True, False, TRUE, and FALSE all coerce correctly. Genuinely invalid values (maybe, 0, null) still throw PARSE_ERROR — the relaxation is intentionally scoped to casing. Other tool-call dialects are unaffected.