Letta Code 0.24.13 አውርድ

What's Changed
- feat(channel): support dynamic channel plugins by @cpacker in #2021
- fix(reflection): trim launch context and clarify the system prompt by @devanshrj in #2031
- test: harden mock module isolation checks by @cpacker in #2033
- feat(ws): write + sync memory file command by @christinatong01 in #2030
- refactor(api): add API backend facade by @cpacker in #2034
- refactor(api): route headless lifecycle through backend by @cpacker in #2035
- refactor(api): route stream-json controls through backend by @cpacker in #2036
- test(api): make fake headless backend stateful by @cpacker in #2037
- fix: k2.6 output tokens by @AriWebb in #2042
- feat: secrets in lcd by @AriWebb in #2046
- feat(cron): add LETTA_DISABLE_CRON_SCHEDULER opt-out + quiet failed-c… by @4shub in #2047
- feat(file-search): always skip .letta/worktrees in @-mention / quick-… by @4shub in #2049
- fix: desktop listener registers with local env server when channels a… by @4shub in #2052
- chore: bump version to 0.24.13 by @github-actions[bot] in #2054
Full Changelog: https://github.com/letta-ai/letta-code/compare/v0.24.12...v0.24.13