Release v0.34.19

What's Changed

• chore(skills): remove curating-memory-palace builtin skill by @cpacker in #5174
• fix(channels): preserve Microsoft Teams a:-prefixed chat ids in MessageChannel by @letta-integration[bot] in #5177
• fix(tools): abort in-flight tool executions instead of waiting for them by @letta-integration[bot] in #5175
• fix(ci): follow the official Claude Tag documentation redirects by @letta-integration[bot] in #5191
• chore(skills): remove obsolete migrating-memory builtin by @letta-integration[bot] in #5163
• fix(headless): abort in-flight external tool waits instead of blocking by @letta-integration[bot] in #5176
• fix(tools): cap Cloud sandbox monitors at one hour by @letta-integration[bot] in #5195
• feat(agent): give subagents a parent memory pointer by @letta-integration[bot] in #5193
• chore: bump version to 0.34.19 by @github-actions[bot] in #5197

Full Changelog: v0.34.18...v0.34.19