This record is **Energy Filament Theory (EFT) A7: Boundary Scanning Protocol Family**. A7 belongs to the EFT methodology/protocol stack (A4 → A5 → A6–A21). Its purpose is to formalize *controllable-boundary / programmable-vacuum* experiments—**cavity QED, (dynamic) Casimir platforms, Josephson/superconducting systems, strong-field conduction, and reversible boundary engineering**—into a **pre-registrable, frozen, auditable, and falsifiable** minimal workflow. The protocol’s core goal is: under **fixed geometry and fixed readout definitions**, scan a **reversible boundary-control variable** and deliver audit-grade artifacts that allow an unambiguous decision on: 1. whether **repeatable threshold/step-like phase boundaries** exist (segmentwise plateaus);2. whether a threshold triggers **linked/chain rewrites** (co-window changes in yield, spectral shape, and correlation structure);3. falsification conditions: if observables vary only smoothly, or can be fully explained by known dispersion/nonlinearity/defects, then the corresponding claim should be marked as refuted or the applicable window must be narrowed. A7 is aligned with **Z13 Clause T2 (Boundary Scanning / “Programmable Vacuum” thresholds)** and is intended to be invoked by empirical reports (P/R series or third-party replications) via an **Audit Hook** that declares version dependencies (A4/A5/A7/Z13), **Critical Step Hash**, **Pre-registered Pipeline**, **Minimal Artifacts**, and **null semantics** (Null result vs Not checked). This manuscript is a **methodology protocol** and does not introduce new experimental/observational datasets; it does not replace device engineering or physical interpretation—it specifies only *how to test, how to refute, and how to leave auditable traces*. (A7 is commonly referenced by Z01 and Z04; audit linkage: Z13/T2.)
Guanglin Tu (Sun,) studied this question.