The Feno program - Fenocosm record v21: event-time surrogates under the real observation process (the missing null)

Fenocosm record v21 — event-time surrogates under the real observation process (the missing null). A sealed, append-only results record of the Feno program. The program's surrogate honesty layer had been amplitude-domain: IAAFT (record v7) calibrates a claim about a sampled series by preserving its marginal and spectrum. But the program's event-altitude records live on event times — sparse point processes read through a real observation process (an exposure mask, a detection or fluence threshold) — and two committed statistics shipped there with no surrogate band at all. This record builds the missing primitive: three seeded, mask-aware point-process surrogate generators (intensity-preserving Poisson resample, thinning-matched variant, local inter-event shuffle), each with an explicit specificity and power battery on known-truth worlds, and it retro-audits the program's committed Weibull renewal shape and Hawkes branching ratio against those bands. Two results travel from it: an exposure mask alone manufactures Weibull "clustering" from a homogeneous Poisson process, and a provably self-excitation-free smooth solar cycle reproduces a branching ratio of η ≈ 0.956 against the program's own committed 0.957 — one of four in-house reproductions of the Filimonov–Sornette trap. Deposit note. All seven Feno-program repositories are private and remain private, so this deposit is standalone: it carries its own reproduction materials, its metadata contains no repository link, and sibling work is referenced by DOI rather than by repository path. Related Zenodo DOIs cited below are reserved with publication pending. Part of the Feno program. The source repository is private; the reproduction materials for this record are contained in the record itself.