fix(api): report empty error responses

[BYK]

Summary

Fixes #1423.

• Preserve HTTP status text from API responses.
• Report useful status and request context when a non-2xx response has an empty textual body.
• Keep JSON responses machine-readable with a {status, statusText, body} envelope while applying --fields to the API body.
• Preserve raw binary successes and summarize binary errors without emitting response bytes.
• Classify every status outside the 2xx range consistently, including 3xx responses.

Verification

• pnpm exec vitest run test/commands/api.test.ts test/e2e/api.test.ts
• pnpm exec vitest run test/lib test/commands test/types test/script --coverage
• pnpm run typecheck
• pnpm run lint
• git diff --check

The package test:unit wrapper failed before reporting results with Unknown: ChildProcess.kill; the equivalent direct Vitest command passed 9,243 tests with 16 skipped.

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Project	Deployment	Actions	Updated (UTC)
cli	Ready	Preview	Aug 22, 2026 12:25pm

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