[JoyboyBrian]

The existing R437 physical child certificate uses q3,w1 zero-high fields, while the root-to-leaf dispatch certificate observes metadata only. This package executes the actual modulus-9 leaf payload and literal SOURCE87 consumer on two different complete nonzero-high prefixes.

• Actual compiler-resolved GOOD charts, actual SelectedBinding.child_program, actual incoming evaluator, unchanged trace.leaf and packet_engine.run, and actual episode.xor_packet execute 13,122 dirty bits. The coordinate weights are [8,2] and [5,8]; all 24 split/merge coefficient calls execute, with runtime numeric decoding forbidden.
• An independent eight-primitive matrix product gives the weighted pullback, enumerated over all 6,561 four-atom coordinates per prefix. It distinguishes stale first-prefix weights and inverse-weight substitution. Actual bad high digit3 and wrong rank3 STEP reject with restored borrowed state; a one-bit wrong return changes the actual consumer output.
• The package derives prefix separability from authenticated loop structure, checks full high-index decoding and offset/projection intertwining, and runs two distinct dirty fibers. The explicit finite adapter replaces the infeasible independent prefix copies with those two prefixes only. It does not execute the 3^4096 high cube, GL64 gather, full-parent spectators, or full production node.
• The borrowed source-valid history is 2048→64; the actual constructor appends 64→2. Both represented prefixes produce the same child Program. Original-root reachability/admission is not inferred; q3 is historical semantic evidence outside the selected numerical domain. This finite payload certificate does not compose Audit root-produced R437 leaf coefficient chronology #4759's independent root-history fixture into a new full-root theorem.

Credit: Chris R / Clear1nsight #4176 71914dfbc9ed757f6746c02e9206bb7a984edfbb already establishes the zero-high q3w1 produced child/consumer and is not reclaimed; #4759 ff9c82bcaf19b57edfbea69f92675626cd4c8fca establishes actual root/block metadata chronology; #4757 5dba1acc2ef67e65e6a40e963f727b01edc5e132 is the distinct sharp parameter entry. Retained compiler/caller/arithmetic lineage is unchanged. New harness/derivation: Brian (JoyboyBrian), substantial OpenAI Codex assistance, Apache-2.0.

Validation at 8ef4afcfba50c7f118d4787e34dda437192458ea: ordinary and optimized exact replay; package metadata; committed-byte/source-history preflight (408 files, only canonical base 624de9dc66858af0945e5f8a0942488d62280d43); official export/integrity check; Git-free cold ordinary/optimized replays (49.344s/48.216s) with empty bytecode caches; live-source, retained-source and boolean→integer receipt corruption rejection; all 409 export files unchanged. The planner selects only this package. Independent same-session source review checked separability, weights, matrix product and consumer boundary without finding a blocker. This is author-checked finite evidence and a scoped source argument; no formal-kernel or hosted-CI acceptance is claimed.

Canonical investigation: #4682 (comment) . README preserves concrete open questions for admitted-root production, full high-directory generation, and the complete physical invoice. No κ/frontier or supplier endpoint changes.

Submission checkpoint: canonical main refreshed at 19:57 UTC remains 624de9dc66858af0945e5f8a0942488d62280d43, priority revision7 unchanged. Final cache completed 19:59:26 UTC with 316 open PRs, 3,732 Discussion records and 6,319 local notes (complete reported inventory/pagination, no warnings). Scoped offline searches found the credited predecessors and this investigation/coordination pointer, with no additional same-obligation lead requiring a pivot. This is not an exhaustive novelty certificate. Relevant #4176/#4757/#4759/#4685 heads were live-rechecked unchanged and merged.