# ZJX Infrastructure Hardening Source Note

Date: 2026-08-22
Publisher: Greyforge Labs
Canonical Chronicle: https://greyforge.tech/chronicles/compression-was-the-easy-part

ZJX's August 22 engineering pass strengthens the archive path with lower-memory
structured-log routing, bounded decoder resources, isolated codec environments,
dependency readiness, no-write restore planning, portable conformance,
project-owned wrappers, oversized-footer rejection, and valid zero-sized
payload preservation.

Fresh local verification completed 21 of 21 Zig tests and 76 Python or
integration tests. Of the latter, 75 passed and one optional experimental MCM
integration was skipped. Combined result: 96 passed, one optional integration
skipped.

The controlled structured-log replay used 342,409,609 raw bytes and produced a
4,412,960-byte archive. Peak packaging RSS fell 41.9 percent against the same-
session baseline and 57.4 percent against the earlier report-grade run. Wall
time was 2.5 percent slower. Archive test and inspect passed.

The measured source was private local telemetry, not a source-included public
benchmark pack. This supports bounded memory-engineering and operational-
hardening claims, not speed, universal compression, production stability, a
low-memory mode, or a frozen format.

Primary surfaces:

- https://zjx.greyforge.tech/
- https://zjx.greyforge.tech/docs.html
- https://greyforge.tech/chronicles/zjx-compression-evidence-discipline

Autonomy, Engineered.