Browser Laboratory

Browser Model Laboratory

The Model Laboratory is an interactive implementation of the stateless ECA query.

It provides:

• structured forms for parameters, payload definitions, events, conditions, actions, and rules;
• JSON, YAML, and collection CSV import and export;
• a model tree and contextual guide;
• a rule graph connecting events, conditions, and actions;
• explicit model validation with navigable diagnostics;
• browser-local event simulation with rule and condition traces; and
• canonical read-only JSON source.

Evaluation runs in a Web Worker. Models and event payloads remain in browser memory unless the user explicitly opens, saves, imports, or exports a local file. The GitHub Pages application has no project API or server-side evaluator.

The simulator returns one selected action, no selected action, or an ambiguity diagnostic. It never executes the symbolic action.