R12 Projected SD-CST Fresh v2 Preregistration

Status: closed and rejected after the sole fresh development read; sealed confirmation remains unopened and is not authorized

Parent result and exact failure

Fresh v1 source 4a7fb4880c919735ae35bf1f33f4c7245a8bff73, board seed 3040523197183361035, training seed 8787815392344128274, and H100 job 694008 produced a valid fixed epoch-four checkpoint. Treatment was exact on 48,000/48,000 training tapes. The equal-update row-shuffled-label arm was exact on 870/48,000 tapes, 1,298/48,000 identities, and 185/48,000 binding pointers. The checkpoint and gate configuration SHA-256 values are 91d4860b... and a725fabe....

The sole development read then failed before an evaluation artifact existed: independent per-slot kind argmax produced at least one row with other than exactly one STOP, and HardProgramTape correctly rejected the malformed tape. Development/confirmation access is 1/0; that board is closed. No v1 development accuracy is claimed and no same-board diagnostic, rescore, or alternate decode is permitted.

v2 hypothesis

Event slots have a disclosed global grammar: exactly one of eight slots is STOP. Independent categorical argmax ignores this dependency. v2 replaces only kind discretization with the exact maximum-a-posteriori assignment under that public grammar:

1. for every slot, choose the higher-logit non-STOP kind and record its score;
2. compute each slot's STOP gain: STOP logit minus best non-STOP score;
3. choose the first maximum-gain slot as STOP; and
4. retain the best non-STOP kind in every other slot.

This is the exact maximizer over all 8 * 2^7 legal kind tapes, not beam search, retry, evaluator repair, or an oracle-selected STOP. It consumes only the model's raw eight-by-three kind logits and public grammar. It adds zero learned parameters and is applied identically to treatment, row-shuffled-label, consumed-parent, and binding-source-free compiler arms.

Cross-generation exclusion amendment

Structured-decoder source 03c10d2dba5ce09a939c0e58617f73492a7df162 was frozen before board/training seeds 3069712212437980146 / 1406604500382831061. The built board passed its inherited-parent and internal audits and was never synced, submitted, trained, or opened. A new pre-launch audit against the already consumed v1 development split found 13 abstract operation-sequence overlaps in v2 train and one in v2 development. Exact prompts and names were zero; v2 confirmation had zero sequence and 13-gram overlap. Because train exposure to a consumed development sequence is avoidable, this unlaunched board is rejected.

The successor builder must require the exact consumed v1 development file with SHA-256 b85ea65ed310554192d421c909c6519e4738b01a80647abe7f4ffd1b70079c4e. It reserves every operation sequence in that file in addition to all inherited parent-training sequences. Its report binds the consumed hash and measures prompt, name, sequence, and 13-gram overlap against every new split. Exact prompt/name/sequence overlap must be zero everywhere; 13-gram overlap must be zero for successor train and sealed confirmation. Development grammar-level 13-gram overlap is reported but may be nonzero because development is the explicitly iterative split and uses the same task grammar. Old confirmation is never opened. This amendment changes no model, decoder, threshold, optimizer, parameter, or scored-access contract. Freeze new source and draw entirely new seeds after the added tests pass.

Frozen audit evidence

Every compiled arm must export its full raw float32 kind logits to the scorer. The independent assessor must:

• reject non-finite values, numeric type coercion, wrong ranks/shapes, wrong decoder identity, or extra decoder-evidence keys;
• recompute raw per-slot argmax, raw exactly-one-STOP status, non-STOP choices, STOP gains, selected STOP, and the complete structured kind tape;
• reject any packet that differs from the recomputed exact MAP; and
• report raw one-STOP and raw exact-kind rates overall and treatment raw one-STOP rates by variant.

Only the 25+1 categorical packet reaches the separate recurrent executor. Raw logits remain scorer evidence and are not executor input. Program tensors are still poisoned and destroyed before late-query compilation. The structured decoder cannot inspect row IDs, variants, depth, oracle fields, final state, answer, trajectory, evaluator output, or confirmation authorization.

Unchanged contracts

All fresh v1 contracts remain unchanged unless this document says otherwise:

• exact byte parent, execution core, and consumed diagnostic hashes;
• 48,000 train rows, 2,304 development rows, and 2,304 sealed confirmation rows;
• inherited-parent overlap audit and split-disjoint names, prompts, sequences, and scored 13-grams;
• hash-bound exclusion of every sequence from the consumed v1 development set;
• 6,748,897 trainable parameters, 20,955,890 compiler parameters, and 146,057,595 nominal complete-system parameters;
• strict sub-150M comparison and strict sub-200M global gates;
• treatment and independent per-row shuffled-label arm with shared initialization, minibatch order, optimizer, and exactly 3,000 updates;
• epoch four as the sole checkpoint;
• every packet, pointer, execution, variant, depth, attribution, paired, intervention, negative-control, source-deletion, and custody threshold; and
• one development read followed by one confirmation read only if every frozen development gate passes.

Schemas and protocol IDs advance from v1 to v2 so no v1 board, checkpoint, configuration, evaluation, or assessment can be mixed into v2.

Required pre-seed tests

Before source freeze and any seed:

1. compare the decoder against exhaustive enumeration of all legal assignments;
2. prove that it preserves independent argmax whenever independent argmax is already legal;
3. prove exactly one STOP for arbitrary finite logits and deterministic tie behavior;
4. make the assessor reject a packet/logit mismatch and malformed float evidence;
5. pass the synthetic 2,304-row perfect-system evaluator/assessor contract;
6. pass all prior projected mechanics, board, source-deletion, artifact-binding, and parent-reconstruction tests; and
7. pass static, format, shell, and source-manifest checks.

Claim boundary

A v2 pass would establish fresh-distribution source-deleted execution in this bounded three-entity transport language with a disclosed structured kind decoder. It would not establish unconstrained natural-language reasoning, a learned halting grammar, self-generated plans, or active use of Shohin's nominal 125.08M trunk. Raw versus structured kind rates must be disclosed so the decoder's contribution remains visible.

Frozen result

Successor source 6ca8933c2cfcc2d972733774b26ced9a9b75caef preceded board/training seeds 126281723562431289 / 2943136710636342416. The final board passes the cross-generation exclusion contract and sole job 694028 completes cleanly on evc27. Treatment fits all 48,000 training tapes; row-shuffled supervision fits only 934. On the sole development read, treatment reaches 672/2,304 = 29.167% exact packets, 2,055/2,304 = 89.193% exact state, 763/2,304 = 33.116% answers, and 684/2,304 = 29.688% joint. All 672 exact packets execute exactly.

The exact-MAP decoder is valid but not causal to the main failure: raw kind argmax is already one-STOP on 95.747% and exact on 87.500%, while structured kind is 87.543%. The frozen late query is exactly 768/2,304 = 33.333%, and the held-out paraphrase variant is 0/288 exact packets and 39/288 exact states. The assessor therefore records reject_projected_fresh_board; access is 1/0 and confirmation remains sealed. Full custody, metrics, hashes, and diagnosis are frozen in R12_SD_CST_PROJECTED_FRESH_V2_RESULT.md. Never rescore or repair this board.