Spectrum Standards
📘 Introduction & Scope
📡 Spectrum as Substrate
🧭 Regimes & Hierarchies
🌱 Human & Environmental Exposure
🔗 Primary / Secondary / Ternary Networks
⚠️ Cross‑Regime Leakage & Interference
📶 Substrate Comms & Structural Signaling
🧨 Alignment Failures & Case Patterns
🌌 Future Fields & Coexistence Models
🧾 Conclusions & Forward Links