Quantum Sphaera Companion: A Structure-First Mathematical Unfolding

Quantum Sphaera Companion v4.7.0 release. This release records the guarded v4.7.0 version of the Quantum Sphaera Companion after the conservative compression pass, concept-DOI restoration, full-monolith recovery, reference/metadata hygiene, and final PDF compile audit. Main release-facing result: v4.7.0 formalizes a guarded local/restricted/effective closure layer for the Quantum Sphaera Companion framework. The release records the conservative relative-seam neutralization of the C4 obstruction, the detector-threshold terminality of the C5 collar at theta = 1/256 after n = 20, local photon-clock selector preservation under Delta_gamma < 1/5, local typed mixed-comparison control, terminal-data bridge semantics, restricted terminal-data naturality, and the terminal-blocker freeze distinguishing terminal-data zero from exact all-readout zero. The v4.7.0 release also introduces the matter-frame epsilon-terminality interpretation and the tachyon-frame signed-scale separation. In this framing, matter-frame closure is treated as effective epsilon-terminality rather than exact all-readout zero, while tachyon/information-frame scale is represented as a spacelike or signed norm rather than as a negative material length. Scope guard: this is a guarded local/restricted/effective release. It does not claim exact finite C5 zero closure, exact all-readout terminality, C6/T2 closure, a global photon-clock or Riemann-Hypothesis theorem, or global all-readout closure. The release should be read as an effective/local frame-typed closure and metadata-clean release, not as a global TOE-closure claim. Version DOI: 10.5281/zenodo.20232911Concept DOI: 10.5281/zenodo.19210728