Add generated illustration for second-call packet devlog post.

Shipped as 39aa5cd.

What Changed

This slice updates the public build record so readers can understand what changed without leaving the devlog for GitHub.

• Worked in blog presentation and rendering.

Why It Matters

The devlog is a public-facing build journal, so each entry needs to explain the work in plain language instead of acting as a commit index.

Implementation Notes

The commit message for this slice was:

Restore the missing visual asset referenced by the latest auto-generated build log entry so devblog integrity checks pass consistently.

Files touched in this slice included:

• public/blog/assets/visuals/illustrations/add-axis-driven-second-call-contract-packet-families.svg

Verification

• The change was committed to main and included in the running devlog timeline.
• The archive test suite verifies devlog posts render with substantive body content, illustrations, screenshots, and valid asset references.
• Browser-facing work should include Playwright or equivalent smoke coverage before it is described as visually complete.

Visuals