An Observability Scope Declaration for Modified-Gravity Ringdown Claims: Inherited Coupling, Detector Bounds, Nonlinear Simulations, and Referee-Operational Gates

This release contains Manuscript 2 v0.6: “An Observability Scope Declaration for Modified-Gravity Ringdown Claims:Inherited Coupling, Detector Bounds, Nonlinear Simulations, and Referee-Operational Gates.” The manuscript proposes a referee-operational observability scope declaration for modified-gravity ringdown claims. It distinguishes missing foundations from inherited foundations, formalizes Milestone-0 inheritance requirements under standard metric matter coupling, introduces Milestone-0F for parameter-origin testing of proposed extra forces, and adds required reportable quantities for detector-facing and nonlinear-simulation ringdown analyses. The v0.6 release is a targeted repair pass. It adds mandatory reportable quantities, one filled Observability Scope Declaration exemplar, the Milestone-0F Parameter-Origin Test for Extra Forces, tightened checklist rows, citation/source cleanup, and release-compilation verification. No quantum-closure material, dRGT/Fierz-Pauli material, or third case study is included. Files included: manuscript2_v06_final.tex- manuscript2_v06_final(2).pdf manuscript2_v06_final.sha256 manuscript2_v06_final_compile_report.txt manuscript2_v06_final_release_bundle.zip modified gravity; gravitational waves; black hole ringdown; quasinormal modes; scalar-Gauss-Bonnet gravity; quadratic gravity; LIGO-Virgo-KAGRA; observability rubric; detector inference; numerical relativity; hyperbolicity; strong-field gravity; REVTeX