New Horizons measured the optical background from 50 AU, beyond the zodiacal fog, and found the sky brighter than the catalogs: roughly twice the integrated galaxy light in the original analysis (Lauer et al. 2021), reduced but not erased by improved Galactic corrections (Postman et al. 2024). Whatever residual survives, the cleanest darkness measurement in history says the standard source inventory is incomplete, while the TeV transparency ledger pulls the photon budget the other way.
The model's light budget is its assembly history: the optical background must integrate to the galaxy populations hierarchical formation built, extrapolated faint-end slopes included. An excess forces either luminosity functions steeper than counted, stripped-star components invoked at need, or exotic emitters, each an admission the inventory was short.
SCT's ledger is deeper by construction. Collision seeding front-loads the universe with compact luminous populations the hierarchical census underpredicts: abundant early accreting black holes (the Little Red Dot demographic, orders of magnitude above the bright-quasar count), dense early stellar generations in seeded proto-structures, and their diffuse processed remnants (P46, P56, P25). Integrated over cosmic time, the seeded inventory contributes precisely the kind of smooth, source-unresolvable optical background the LORRI residual records: light from numerous faint early emitters the catalogs cannot reach. A genuine residual is therefore the expected reading of a deeper ledger, not an accounting emergency.
The framework welcomes the revisions too: the inherited-inventory contribution is bounded, so SCT predicts a modest residual, not the full twofold excess, sitting comfortably with the Postman-corrected accounting. And the apparent clash with TeV transparency resolves through deposition geometry (P34): a higher sky-averaged background from abundant faint sources coexists with translucent void corridors, because mean and sightline are different moments of an inhomogeneous photon field.
This is the same deep-inventory reading behind the diffuse gamma-ray budget and the neutrino source ledger, audited here in integrated starlight. There is no need to invoke decaying particles or per-anomaly stellar components.
The convergence is the test: JWST deep counts plus future LORRI campaigns establishing that the catalogs fully integrate to the measured background, residual zero, would remove the deeper-ledger signature here (without harming the framework elsewhere). In the other direction, a residual confirmed but spectrally identified as a line or feature, the mark of particle decay rather than integrated faint emitters, would contradict the smooth seeded-population reading and challenge the no-exotic-emitter ledger.