The business surface

The core bet of the platform (ADR-0005): the agent owns how, the human owns what it means. In practice, “what it means” lives in the flow’s UPPERCASE literals — thresholds, transcoding tables, routing keys, feature lists. The runtime extracts them from the AST with their exact source spans and serves them as the surface:

• the panel shows them as editable values and tables next to live sample events;
• editing writes back literally (span-exact, no reformatting), audits the change, and restarts just that unit;
• credential-shaped keys are masked and must be secret() references — the same single-sourced pattern gates CI, the panel, and generation.

Three levels of “editable” (ADR-0019):

• N1 — parameters: the literals above; already editable.
• N2 — the rules view: the flow’s decision logic read as faithful sentences (guide) with its inline literals editable; the structure itself is read-only.
• N3 — structure: changing the logic is an agent conversation — never a form-based rules editor. That line is deliberate: half-editable code is how platforms rot.