# R12 SD-CST Complete Physical-Record Front-End v1.2 Result

**Decision:** `retain_occurrence_head_for_fresh_board`

**Claim boundary:** consumed-training compiler mechanics only. Development and
confirmation access remained zero. This result does not establish fresh
language transfer, self-directed execution, or native reasoning.

## 1. Immutable contract

- scientific source commit:
  `a32c881326eff4ea29ff7c4ee9482f8798894462`;
- execution/seed receipt commit:
  `b6b41906ebfb7f66e674f98ca0fc4aba7b68e04c`;
- raw beacon: `16320682315740454145`;
- signed-safe seed: `7097310278885678337`;
- consumed train SHA-256:
  `b7756dbf8d4401dbc5fb897dee53f68758e27200b1ce0d2387631f2f0205ec25`;
- complete-local v1 query endpoint SHA-256:
  `30b75305031b1e2f67a24f98b4907d2d65bc847310ea406d25f34c7b9611e1b4`;
- sole job: `694214`, H100 `evc23`, completed cleanly in 4m24s;
- scored access: development `0`, confirmation `0`.

The clean Newton capsule was detached at the exact execution receipt. Runtime
preflight verified all parent/data hashes, bf16 H100 allocation, exact parameter
ownership, and a strict complete-system count below 200M.

## 2. Exact system

| Quantity | Count |
|---|---:|
| immutable Shohin trunk | 125,081,664 |
| complete compiler | 67,027,474 |
| trainable occurrence head | 601,350 |
| categorical motor | 19,206 |
| categorical reader | 835 |
| **complete deployed system** | **192,129,179** |
| **strict-200M headroom** | **7,870,821** |

Only six tensors train: LayerNorm over each declaration byte, a shared
384-to-1536 GELU projection, and a 1536-to-6 occurrence-role classifier. The
old failed declaration queries remain present but unused and frozen. The exact
v1 query endpoint, physical event bus, all parent compiler paths, matcher,
tape, executor, motor, reader, and Shohin trunk remain frozen under digest
`200cd1bf03888b1353a267dfc3250ca4420de785e06d3df4b393c6a92d3d8842`.

## 3. Result

| Minimum held-out renderer | V1.1 | V1.2 |
|---|---:|---:|
| binding pointer | 61.00% | **100%** |
| initial-occurrence pointer | 0% | **99.20%** |
| initial state | 48.00% | **100%** |
| identity | 98.90% | **100%** |
| complete packet | 47.45% | **100%** |
| query / query pointer | 100% / 100% | **100% / 100%** |
| event pointer / kind / amount | 100% | **100%** |

Both easier held-out renderers are exact on all fields. Each difficult
declaration renderer has 1,984/2,000 strict all-three initial-pointer matches,
but all 2,000 initial values and all 2,000 complete packets remain exact. Fit
packet accuracy is at least 11,999/12,000 per renderer and reaches 12,000/12,000
on both difficult renderers. Epoch one already passes every absolute gate;
epoch two preserves the result.

The causal interpretation is specific. The read-only audit showed that the
v1.1 bilinear queries always found a true entity span but confused the six
occurrence roles. Replacing only that readout with a nonlinear local six-class
head resolves the ambiguity while every successful frozen interface remains
exact. This establishes a complete finite compiler interface on the consumed
renderer family. It does not show transfer to unseen source language.

## 4. Gate accounting

All twelve preregistered gates pass:

1. fit packet at least 99%;
2. held-out packet at least 95%;
3. held-out initial state at least 95%;
4. held-out query at least 99%;
5. held-out query pointer at least 99%;
6. held-out binding pointer at least 99%;
7. held-out initial-occurrence pointer at least 99%;
8. held-out event pointer at least 99%;
9. held-out kind, identity, and amount at least 99%;
10. excluded state byte-identical;
11. complete system strictly below 200M; and
12. scored access remains `0/0`.

The exact decision is `retain_occurrence_head_for_fresh_board`. This authorizes
one separately committed board with new names, renderer/source families,
train/development/sealed-confirmation splits, matched controls, source deletion,
and the unchanged categorical executor. It does not authorize reuse or opening
of any closed development or confirmation split.

## 5. Preserved artifacts

- local checkpoint:
  `train/sd_cst_complete_physical_record_bus_v1_2_pilot_7097310278885678337/compiler.pt`;
- local report:
  `train/sd_cst_complete_physical_record_bus_v1_2_pilot_7097310278885678337/report.json`;
- committed report copy:
  `artifacts/r12/sd_cst_complete_physical_record_bus_v1_2_pilot_7097310278885678337.report.json`;
- Newton output:
  `/lustre/fs1/home/[redacted user]/shohin_sd_cst_complete_physical_record_bus_v1_2_pilot_7097310278885678337/`;
- checkpoint SHA-256:
  `eaa83df068ca0545ddd578f36d4d3f269334e83553f0730f844e46e107323c18`;
- report SHA-256:
  `6148b4ef5a01def5fc7c17584700d30570fb6bbd1ee598629e40c674eaf05928`.

Local and Newton hashes match exactly.