Clear existing lint warnings

[xy200303]

Summary

• Replace single-argument new Array(...) usage in VAD edit-distance helpers with Array.from(...) initialization.
• Remove an unused catch binding in the Stepfun stateless backend JSON parser.
• Avoid aliasing this in the browser AEC capture async iterator.
• Keep this stacked branch current with the latest Reject malformed numeric CLI options #17 updates.

Verification

• pnpm exec oxlint extensions/realtime-aec/src/browser-audio-driver.ts packages/realtime/src/backend/stepfun-stateless.ts packages/realtime/src/vad/cli-handlers.ts packages/realtime/src/vad/resolver.ts
• pnpm exec prettier --check extensions/realtime-aec/src/browser-audio-driver.ts packages/realtime/src/backend/stepfun-stateless.ts packages/realtime/src/vad/cli-handlers.ts packages/realtime/src/vad/resolver.ts packages/utils/src/path.test.ts packages/utils/src/shell.test.ts src/commands/artifacts-command.ts src/commands/option-parsers.ts src/commands/option-parsers.test.ts
• pnpm exec vitest run packages/realtime/src/vad/resolver.test.ts packages/realtime/src/backend/stepfun-stateless.test.ts packages/utils/src/path.test.ts packages/utils/src/shell.test.ts src/commands/option-parsers.test.ts
• pnpm exec tsc --noEmit --pretty false
• pnpm check

Notes

• Stacked on Reject malformed numeric CLI options #17. After Reject malformed numeric CLI options #17 is merged, this PR should show only the lint-warning cleanup commit plus the stack merge commit.
• Closes Clear existing lint warnings #67.

[ZouR-Ma]

Thanks for the contribution!

To get this ready to merge:

• Reference an issue in the description with Closes #<number> (our link-check CI requires it; open one first if needed).
• Make sure pnpm check passes locally (lint, type-check, dependency/dead-code guards, formatting, and tests — also enforced in CI).

Full conventions:
https://github.com/stepfun-ai/Step-Realtime-CLI/blob/main/CONTRIBUTING.md

[xy200303]

Thanks! I've addressed the feedback on this PR:

• Opened issue Clear existing lint warnings #67 and linked it from the PR description with Closes #67.
• Updated the PR description with the current verification steps and stack note.
• Synced this stacked branch with the latest Reject malformed numeric CLI options #17 updates.
• Confirmed pnpm check passes locally and all PR checks are green.

This should be ready for review/merge when you have a chance.

[li-xiu-qi]

Hi @xy200303, thanks for the cleanup. This PR overlaps with #41 and #68 on the VAD sparse array fix (cli-handlers.ts, resolver.ts) and the unused catch parameter in stepfun-stateless.ts. Those PRs are currently open and cover the same files. Wanted to flag the overlap in case you want to coordinate or consolidate.

[ZouR-Ma]

Thanks for this PR — and for the record, you fixed these lint issues on June 10, a month before the change that eventually landed. However, #10 was merged on July 10 and cleared the warnings in the same four files. We compared file by file: browser-audio-driver.ts and stepfun-stateless.ts match this PR exactly, and the two VAD files differ only in a loop variable's name. Everything unique to this PR already exists on main, which is also why it now shows conflicts.

So we're closing this PR — not because anything is wrong with it, but because the same work has already landed. Two ways to keep contributing here:

1. If pnpm lint on the latest main still shows leftover warnings elsewhere, a fresh PR from the current main is welcome (as a standalone branch this time, not stacked on another PR). If it's clean, we'll close issue #67 as well.
2. Your #17 (strict numeric option parsing) is still very much alive — see the review comments there; it can land quickly once slimmed down.