# Roadmap: v1.38 L2 Growth, Retrieval, And Compilation

## Overview

`v1.38` is shipped.

It restored real `L2` graph growth, retrieval, compilation, staging, hygiene,
and topic-replay behavior through production code and runtime entrypoints.

## Phases

- [x] **Phase 49: L2 Growth, Retrieval, And Compilation**
  - Goal: rebuild `L2` graph storage, retrieval, compilation, and staging
    behavior through real service and runtime paths.
  - Outcome: `L2` compiler, staging, hygiene, and retrieval surfaces now exist
    in production code and are exercised by dedicated regression suites.

## Key Accomplishments

1. Added real `L2` compiler and staging support modules.
2. Materialized retrieval and activation behavior through runtime/service paths.
3. Added durable compiled and staging artifacts instead of schema-only closure.

## Verification Snapshot

- `python -m pytest research/knowledge-hub/tests/test_l2_backend_contracts.py research/knowledge-hub/tests/test_l2_graph_activation.py -q`
  - result: `15 passed`

## Archive References

- `.planning/milestones/v1.38-REQUIREMENTS.md`
- `.planning/milestones/v1.38-MILESTONE-AUDIT.md`
