Briar v1.2.121

What's Changed

• fix: 워크플로 생성 진행 메시지를 텍스트로 표시 by @siisee11 in #1017
• feat: add Antigravity provider by @siisee11 in #1018
• chore: release v1.2.121 by @siisee11 in #1019
• fix: apply remote D1 migrations as atomic imports by @siisee11 in #1020
• fix: recover completed D1 import polling by @siisee11 in #1021

Full Changelog: v1.2.120...v1.2.121