release: 1.4.0-alpha.4

[stainless-app]

Automated Release PR

1.4.0-alpha.4 (2026-07-02)

Full Changelog: v1.4.0-alpha.3...v1.4.0-alpha.4

Features

• Allow for empty-prompt cloud-agent handoff (9c70c23)
• api: api update (9962d72)
• api: api update (6ca1066)
• api: api update (eb49f4e)
• api: api update (d63714d)
• api: api update (9a36cd0)
• Followups for docs-syncing workflow (5352485)

Bug Fixes

• client: send content-type header for requests with an omitted optional body (2786b6c)
• update flatted to resolve CVE-2026-33228 (#32) (4841416)

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[ianhodge]

Closing: this release PR was created by the pre-transition Stainless SaaS release-please fork (next→main branch model). The repo now uses stock googleapis/release-please via .github/workflows/release-please.yml (see #44); it will open a fresh release PR from main once that lands.