Building a Walker Panel

Walker panels are live semantic surfaces.

A panel consumes structured runtime events and turns them into a readable, interactive display.

Examples:

A panel is not responsible for simulation logic. It observes and presents state coming from a runtime system.

The standard Walker panel architecture separates:

Layer	Responsibility
Core	Pure state and derived values
Host Store	Runtime integration and transport updates
Surface Store	Renderer-friendly projection
Panel	DOM rendering and interaction
Transport	SSE/network event delivery

This separation allows panels to:

Then immediately:

Your First Panel

“We are going to build a tiny reactor temperature monitor.”

And do it end-to-end.

Tiny. Like:

People learn frameworks by getting a thing moving. Not by reading architecture prose.

Then after the tiny example works:

Now replace:

Walker does not care what your domain is. It only requires:

THAT is the missing tutorial layer.

Then later you can branch into:

Another extremely important addition:

You should explicitly teach the philosophy:

That philosophy is scattered across your plans implicitly. It should become explicit doctrine.

And then lightly reference the future metrics doc like:

This guide intentionally avoids prescribing metric semantics.

Walker panels can represent:

For guidance on designing meaningful metrics and avoiding misleading score systems, see: PLAN-METRICS-AND-SEMANTICS.md