Tests were failing because they relied on the old default limit of 20,000:
- test_memory.py: "x " * 50000 = 100,000 chars now equals the limit
instead of exceeding it. Increased to "x " * 60000 (120k chars).
- test_block_manager.py: Block created with default limit (now 100k),
then 30k char update no longer exceeds it. Set explicit limit=20000
on the test block to preserve the test intent.
- test_log_context_middleware.py: Removed stale `limit: 20000` from
dummy frontmatter fixtures to match new serialization behavior.
Related to #9537
Co-authored-by: letta-code <248085862+letta-code@users.noreply.github.com>
Co-authored-by: Kian Jones <kianjones9@users.noreply.github.com>
* test(core): strengthen git-memory system prompt stability integration coverage
Switch git-memory HTTP integration tests to OpenAI model handles and add assertions that system prompt content remains stable after normal turns and direct block value updates until explicit recompilation or reset.
👾 Generated with [Letta Code](https://letta.com)
Co-Authored-By: Letta <noreply@letta.com>
* fix(core): preserve git-memory formatting and enforce lock conflicts
Preserve existing markdown frontmatter formatting on block updates while still ensuring required metadata fields exist, and make post-push git sync propagate memory-repo lock conflicts as 409 responses. Also enable slash-containing core-memory block labels in route params and add regression coverage.
👾 Generated with [Letta Code](https://letta.com)
Co-Authored-By: Letta <noreply@letta.com>
* fix(memfs): fail closed on memory repo lock contention
Make memfs git commits fail closed when the per-agent Redis lock cannot be acquired, return 409 MEMORY_REPO_BUSY from the memfs files write API, and map that 409 back to core MemoryRepoBusyError so API callers receive consistent busy conflicts.
👾 Generated with [Letta Code](https://letta.com)
Co-Authored-By: Letta <noreply@letta.com>
* chore(core): minimize git-memory fix scope to memfs lock and frontmatter paths
👾 Generated with [Letta Code](https://letta.com)
Co-Authored-By: Letta <noreply@letta.com>
* chore: drop unrelated changes and keep memfs-focused scope
Revert branch-only changes that are not required for the memfs lock contention and frontmatter-preservation fix so the PR contains only issue-relevant files.
👾 Generated with [Letta Code](https://letta.com)
Co-Authored-By: Letta <noreply@letta.com>
* fix(memfs): lock push sync path and improve nested sync diagnostics
Serialize memfs push-to-GCS sync with the same per-agent Redis lock key used by API commits, and add targeted post-push nested-block diagnostics plus a focused nested-label sync regression test for _sync_after_push.
👾 Generated with [Letta Code](https://letta.com)
Co-Authored-By: Letta <noreply@letta.com>
---------
Co-authored-by: Letta <noreply@letta.com>
