What this is? A self‑contained, browser‑only ARC harness for a toy closed‑loop control system. It embeds a small set of measurable facts and computes two actuator commands with simple control laws. Everything runs on this page—no network and no external libraries.
How to use it: Review the embedded facts, press Run to generate the analysis, and optionally export the ARC report. The output is organized as Answer (final values), Reason why (explanations), Trace (step‑by‑step derivations), and Check (a small harness that re‑derives the results and verifies identities).
This page is provided for reproducibility and documentation; it is not guidance for real‑world control design.
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