2.17.19 - Conversation History in development REPL

What's Changed

• fix(test): attempt to deflake 'test_telegram' in staging by @douglas-reid in #476
• fix(tests): add better error handling to fix flaky test by @douglas-reid in #483
• fix(tests): deflake paging test for workspaces by @douglas-reid in #485
• fix(tests): add retries to model checkpoint test by @douglas-reid in #486
• feat(merge queues): attempt a merge queue for the main branch by @douglas-reid in #475
• Two minimum viable agents by @eob in #482
• bugfix: Bug in which context_id wasn't stable across REPL messages by @eob in #480

Full Changelog: 2.17.18...2.17.19