Release v0.34.12

What's Changed

• feat(subagents): run Claude Code and Codex subagents on a connected computer [LET-13820] by @overlord-letta in #4987
• feat(subagents): show Claude Code and Codex tool calls as live progress [LET-13820] by @overlord-letta in #5056
• test(cli): clean up buffered messages after queue bridge tests by @cpacker in #5059
• feat(workflow): foreground wait, built-in tool calls, and listTools/describeTool by @sarahwooders in #5050
• feat(tools): expose LETTA_ORGANIZATION_ID in agent shell env [LET-13855] by @overlord-letta in #5053
• fix(subagents): don't call an aged-out remote result a crash [LET-13820] by @overlord-letta in #5055
• chore: bump version to 0.34.12 by @github-actions[bot] in #5062

Full Changelog: v0.34.11...v0.34.12