ดาวน์โหลด Letta Code 0.28.12

What's Changed
- fix(headless): rebuild stale approval input on resync by @jnjpng in https://github.com/letta-ai/letta-code/pull/3403
- fix(slack): hide generic tool activity from status by @cpacker in https://github.com/letta-ai/letta-code/pull/3408
- feat(skills): add self-configuration skill by @overlord-letta in https://github.com/letta-ai/letta-code/pull/3401
- feat(cli): unify App Server under letta server by @cpacker in https://github.com/letta-ai/letta-code/pull/3415
- fix(cli): expose cloud as the backend name by @cpacker in https://github.com/letta-ai/letta-code/pull/3416
- chore: bump version to 0.28.12 by @github-actions[bot] in https://github.com/letta-ai/letta-code/pull/3417
Full Changelog: https://github.com/letta-ai/letta-code/compare/v0.28.11...v0.28.12