Notes — Atom Fishbone Coupler¶

Engine-local notebook. Any new geometry, plot, or simulation gets an entry.

Date	Entry
2026-07-28	Atom-accessible fishbone cavity campaign — active SiO₂ design, evidence gates, visual status, reproduction contract, and 25 FC ledger
2026-07-27	Unit-cell geometry and simulation log — includes 2D slot checks and the Stage 2 3D MPB result