v4.1.0

Highlights

• Add signal support to createAssembly() and awaitAssemblyCompletion() to cancel in-flight HTTP requests and TUS uploads; optional onPoll hook for early exit/watch flows.
• Ship the new Clipanion-based transloadit CLI with assemblies, templates, bills, and assembly-notifications commands; adds --log-level, --endpoint, --single-assembly, and --concurrency flags.
• Fix file descriptor exhaustion by closing streams eagerly and recreating on demand; tighten lint rules.
• Dependencies: add runtime dotenv; new CLI deps (clipanion, node-watch, p-queue, recursive-readdir).

Breaking changes

• None. SDK API remains backward compatible.

Notes

• Default npm test now runs full coverage including e2e; exporting TRANSLOADIT_KEY/TRANSLOADIT_SECRET is required for a green run.