v0.21.0

What's in this release

• #38 — dhq servers create / update: five deployment-configuration flags — --branch, --auto-deploy, --atomic, --atomic-strategy, --atomic-retention (DHQ-691).
• #39 — dhq servers create --key-pair-identifier: provision a Managed VPS with an existing account SSH key instead of the shared managed one (DHQ-692). Needs the matching API change, live in production since 2026-08-06.
• #40 — agent-skill corrections: dhq deploy --wait does not block outside a TTY, --json=<fields> unwraps the envelope, and ssh-keys create takes --title/--type (DHQ-695).
• #41 — documented the accumulating-changelog convention and the release runbook.

Full detail — the flag semantics, the backend caveats, and the additive pkg/sdk changes — is in CHANGELOG.md → 0.21.0.

Full Changelog: v0.20.1...v0.21.0