v1.15.4 v1.15.5

Name: engram
Author: Gentleman-Programming

medium risk

Gentleman-Programming/engramMay 3, 2026 → May 4, 20261 day between releases

What's New

Fixes cloud recovery parity gap and adds mutation-to-chunk materialization with new repair commands

New Features

New `engram cloud repair materialize-mutations` command for operator verification and re-runs.
Automatic startup repair for `engram cloud serve` to materialize existing mutation-only rows.

Improvements

Mutation-to-chunk materialization ensures consistency between mutation and chunk recovery.
Legacy schema compatibility handles older Postgres schemas missing modern columns.
Postgres-backed backfill tests now run against Docker Postgres for better validation.

Bug Fixes

Resolves cloud recovery parity gap where mutation state was missing from fresh recovery.
Fixes legacy schema compatibility for older Postgres versions.

Upgrade Notes

After upgrading, `engram cloud serve` automatically repairs allowed projects at startup. You can manually verify repairs using the new `engram cloud repair materialize-mutations` command. Ensure database migrations are applied to support legacy schema compatibility.

The Two Releases

v1.15.4

May 3, 2026· 6 months ago

This patch hardens the `mem_save` prompt capture mechanism following a review. It fixes session activity tracking, clarifies documentation, and adds regression coverage for failure paths.

Full release notes

v1.15.5

May 4, 2026· 6 months ago

Fixed the `mem_save` prompt capture release to ensure correct session activity tracking and nil-safe handling. Clarified prompt-capture documentation and added regression coverage for failure paths.

Full release notes