smoothlife/docs/legacy-source-map.md

# Legacy source map

This document is the static provenance record for Macrostep 00. It maps the decisions in the repository-local model contract and retained-options specification to the legacy tree without creating a runtime or build dependency on that tree.

## Scope, authority, and notation

Legacy root used for every source-relative path below:

```text
/home/fpasqua/Nextcloud/VecchiProgetti/SmoothLifeAll/
```

Line ranges are 1-based, inclusive physical lines. Every SHA-256 is for the complete file bytes, not only the cited range.

Decision labels used below:

- **SOURCE FACT** — behavior or data directly evidenced by a cited legacy file.
- **CORRECTED DEFAULT** — deterministic behavior selected by the rewrite instead of accidental or defective legacy behavior.
- **RETAINED HISTORICAL OPTION** — one of the three intentionally selectable historical behaviors.
- **REJECTED DEFECT** — observed legacy behavior that must not be reproduced.
- **PROVENANCE ONLY** — historical evidence that cannot control implementation or product behavior.

The implementation authority is the **local contract+spec set**: `docs/model-contract.md`, `docs/historical-options.md`, and this source map. The external `SMOOTHLIFE_SPECIFICATION.md` is a reviewed legacy specification and provenance source, identified by hash below; it is not an application, test, build, importer, or runtime dependency. If source and local authority differ, the explicit local decision wins.

This review was static. No legacy `.exe`, simulator, reference program, shader, build, or test executable was run. Hashing, line counting, and text inspection did not execute legacy code.

## Shared/base model

### Frozen interpretation

- **SOURCE FACT:** State is scalar; the FFT family supplies periodic 1-D, 2-D, and 3-D domains. The real and half-width complex buffers and default shapes are declared in `SmoothLife/main.cpp:52-79,2839-2902`.
- **SOURCE FACT:** The legacy constant named `PI`/`pi` is `6.283185...`, i.e. conventional `TAU = 2π`, not π (`SmoothLife/main.cpp:52`; `SmoothLife/shaders/snm2D.frag:6`).
- **SOURCE FACT:** `ri=ra/rr`, transition width `w=ra/rb`, Euclidean sampled disk/ring weights, periodic signed coordinates, and normalization sums are in `SmoothLife/main.cpp:1279-1427`. The log records the check `sum(KR)=279.216312`, `sum(KD)=35.524035` for `ra=10, rr=3, rb=10` at `SmoothLife/SmoothLifeLog.txt:303`.
- **SOURCE FACT:** Rising curves 0–7, complete windows 8–9, mixer curves 0–7, and the four rule constructions are in `SmoothLife/shaders/snm2D.frag:16-104`. Modes 0/1/2 produce replacement, `2S-1`, and `S-A` respectively at lines 105-119.
- **SOURCE FACT:** Euler replacement/update, AB3 coefficients, RK4 coefficients, final clamping, and the frame pipeline are in `SmoothLife/shaders/inteuler2D.frag:14-25`, `intab2D.frag:16-29`, `intrk2D.frag:18-31`, and `SmoothLife/main.cpp:2601-2991`.
- **SOURCE FACT:** The SDL branch is the same model with a one-pass clamped Euler update and no separate integration buffers (`SmoothLifeSDL/main.cpp:61-82,2534-2550`; `SmoothLifeSDL/shaders/snm2D.frag:108-130`). It is subsumed by the shared rewrite, not retained as a backend.
- **CORRECTED DEFAULT:** Generate complete sampled kernel support and warn when geometry is unsuitable. Do not retain the legacy `Ra=(int)(ra*2)` component cutoff (`SmoothLife/main.cpp:1317-1323`).
- **CORRECTED DEFAULT:** Discrete ignores `dt` and integrator; Euler, deterministic Euler→AB2→AB3 startup, and RK4 clamp at every intermediate and final commit are authoritative. Undefined legacy AB buffers are never used.
- **CORRECTED DEFAULT:** For relaxation+RK4, stages subtract their own stage state (`Rk4RelaxationReference::StageState`).
- **RETAINED HISTORICAL OPTION:** `Rk4RelaxationReference::StepOrigin` preserves the main program's stage-neighborhood/origin-subtraction mismatch: `deriv(aa,de)` computes from `aa` but passes global `AA` to `snm` (`SmoothLife/main.cpp:2603-2611`), while RK4 supplies `AA1` for stages 2–4 (`2968-2976`). This option exists only for relaxation+RK4.
- **REJECTED DEFECT:** Modes 3/4 in shader/keyboard remnants are not supported (`SmoothLife/shaders/snm2D.frag:111-117`; the SDL catalogue's mode-4 row is `SmoothLifeSDL/SmoothLifeConfig.txt:174`).
- **REJECTED DEFECT:** Uninitialized AB history, stale history after model changes, framebuffer feedback, working-directory shader loading, old OpenGL compatibility syntax, platform `rand()`, and implicit backend substitution are not compatibility requirements.

### Consulted shared/base files

| Source-relative path | Relevant lines | SHA-256 | Evidence |
| --- | ---: | --- | --- |
| `SMOOTHLIFE_SPECIFICATION.md` | 1-307 | `9f651e2697cf44a68cd29e835cb02b7c2e52e8f1de4353ae136254e760ef3d54` | Complete reviewed legacy specification. |
| `readme.txt` | 1-42 | `1194e6a53f8ae46131a60243cef296eef7ccd57bc832b0a88d1a147dbd5acc73` | Variant catalogue, config convention, dependencies, controls. |
| `SmoothLife/main.cpp` | 1-220, 1279-2041, 2601-3000 | `26b21bfa7fb262f02f5eec4c2615aa501639471ccebce33b2abeb4fb6ee02e58` | Controls/parser, buffers, kernels, packed FFT driver, convolution/rule pass, dynamics/integration/defaults. |
| `SmoothLife/shaders/snm1D.frag` | 1-119 | `35a0ba9092b48bcf56be03f392f528a78e0dc72112c5ad7e0c8914b47b272f36` | 1-D shared rule. |
| `SmoothLife/shaders/snm2D.frag` | 1-119 | `747c1d6ed3c0218af54479f685774fe3ab8586101bfaa89985c5f683d68c09a3` | Canonical reviewed rule curves, constructions, and dynamics. |
| `SmoothLife/shaders/snm3D.frag` | 1-119 | `b059270be6aab015a091152c77ec7f3ee4fa19d87981512b73f31f4ca1b11b37` | 3-D shared rule. |
| `SmoothLife/shaders/inteuler1D.frag` | 1-25 | `1496e49426db4a911bd704a431348512d0ddaf1f2aee7e012ea2e11cf7e808e9` | 1-D Euler/replacement and clamp. |
| `SmoothLife/shaders/inteuler2D.frag` | 1-25 | `c5c64d4bb44ae15c1681fa4109ed66e93429b73c0df922f6597023838868c8d9` | 2-D Euler/replacement and clamp. |
| `SmoothLife/shaders/inteuler3D.frag` | 1-25 | `dcb889521b935dd57f44f89df866484a922c1f314fb294385e90ddb5342276db` | 3-D Euler/replacement and clamp. |
| `SmoothLife/shaders/intab1D.frag` | 1-29 | `938854c65c8f2133fd5bba2ae2256282defe23e8a0de3b888ffc3477927ca978` | 1-D AB3 formula and clamp. |
| `SmoothLife/shaders/intab2D.frag` | 1-29 | `75c51d618061bbe453162ed62b6d9b86745bf689443044bec7343071c354ed1b` | 2-D AB3 formula and clamp. |
| `SmoothLife/shaders/intab3D.frag` | 1-29 | `68241b04768a22a28185dbaee994ffc5efac8b80110faeb9d793041e036bc915` | 3-D AB3 formula and clamp. |
| `SmoothLife/shaders/intrk1D.frag` | 1-31 | `9da9e4a012731ca6c2ce4106c1fdd973b4ed2e6cea918fc4f04fbb9f409001ef` | 1-D RK4 formula and final clamp. |
| `SmoothLife/shaders/intrk2D.frag` | 1-31 | `e8a46cf4e6f92597facbbb2d10172eadd64d228f4dae49d4ae7483fe45d564bc` | 2-D RK4 formula and final clamp. |
| `SmoothLife/shaders/intrk3D.frag` | 1-31 | `da0553727cc8be65e669fb5873d98e942971a38cc3965145ce3ba1016a8bfc5e` | 3-D RK4 formula and final clamp. |
| `SmoothLifeSDL/main.cpp` | 1-230, 1230-1389, 2370-2631 | `7e0536e7a89cb12aecbc1f181ec736269ba0a83c58170b761812932b727f3787` | SDL buffers/parser/kernel and one-pass frame loop. |
| `SmoothLifeSDL/shaders/snm2D.frag` | 1-130 | `a148bdccbce861babd85b3af1f96854be0b5dfde9fda62957b7b30d66f394342` | One-pass Euler behavior and mode remnants. |
| `SmoothLifeSDL/readme_sdl.txt` | 1-3 | `fb7d3b6447893d8e3b43acd7a0de696b3bf4c974c62c84147fb155501ae0feb0` | Portability/dependency limitations; no separate model semantics. |

## Packed FFT

### Frozen interpretation

- **SOURCE FACT:** Adjacent real x samples are packed into complex `.rg`, spectra have `NX/2+1` x entries, and inverse conversion selects real/imaginary components by x parity (`SmoothLife/main.cpp:1610-1752`; copy shaders below).
- **SOURCE FACT:** x/y/z plans encode bit-reversed inputs and twiddles; each butterfly is scaled by `1/sqrt(2)`, with special real/complex tangle/untangle scaling (`SmoothLife/main.cpp:1442-1909`; FFT shaders below).
- **SOURCE FACT:** Spectral multiplication uses complex multiplication and scale `sqrt(NX*NY*NZ)/kernel_sum` (`SmoothLife/main.cpp:1912-1967,2603-2610`; kernel shaders below).
- **CORRECTED DEFAULT:** `FftAlgorithm::Standard` is the default: conventional unscaled forward transform, inverse scaled by sample count, then sampled-kernel normalization.
- **RETAINED HISTORICAL OPTION:** `FftAlgorithm::LegacyPackedUnitary` retains packing, half-width x spectra, plan stages, unitary scaling, conversion, and the `sqrt(sample_count)/kernel_sum` correction for supported power-of-two GPU 1-D/2-D/3-D paths.
- **REJECTED DEFECT:** The option does not retain legacy framebuffer/resource hazards, compatibility-profile syntax, relative shader discovery, incomplete kernels, or silent CPU/unsupported-GPU fallback. An unsupported explicit request fails clearly.

### Consulted packed-FFT shaders

| Source-relative path | Relevant lines | SHA-256 |
| --- | ---: | --- |
| `SmoothLife/shaders/fft1D.frag` | 1-41 | `b0810a5b89e9f8146a754c072360686573950c5a0010700d259d4726e3d8b238` |
| `SmoothLife/shaders/fft2D.frag` | 1-53 | `da1d4af18e4b6340a936a036ed010e7e03b3d548d4925f386c26f3fa310af99f` |
| `SmoothLife/shaders/fft3D.frag` | 1-61 | `7f0d58d93cacdfff249a277503b017dee371a1b1547a932d6b5305d2b973fae1` |
| `SmoothLife/shaders/copybufferrc1D.frag` | 1-13 | `f4869822b5e7b42abd3b05745e9802a27b00ba27f77c6c01271bfc5eaab28bcc` |
| `SmoothLife/shaders/copybufferrc2D.frag` | 1-13 | `5c325aaf44b5dfb6dd2f2cc1f831596cae1d61f1259bbafbdc5ddb55050e6914` |
| `SmoothLife/shaders/copybufferrc3D.frag` | 1-13 | `587f0fc491c7e887ab056136b164299cf6c7f508bd9f66f68584e8e8d3aeec2b` |
| `SmoothLife/shaders/copybuffercr1D.frag` | 1-22 | `eb436194b7e8db3db1ba825d0172db9f70069add9058cf85036ea88562d37249` |
| `SmoothLife/shaders/copybuffercr2D.frag` | 1-22 | `fb26244b12c6bad90fa84c9e784e72d409d024d1e66360fa7d0209c99059ab00` |
| `SmoothLife/shaders/copybuffercr3D.frag` | 1-22 | `54e93affdca4cb160ca8163615de5a1a8c272d3b3faf015258f9631daf404f90` |
| `SmoothLife/shaders/kernelmul1D.frag` | 1-19 | `426e730aaf723fb1ddc0b843f8ba3553add8e701e8bb3372e1b5cbb430f6caaf` |
| `SmoothLife/shaders/kernelmul2D.frag` | 1-19 | `3a7f923cbd689738e9c1c9337b75b675f39703d973b07b35010e56c68766acf4` |
| `SmoothLife/shaders/kernelmul3D.frag` | 1-19 | `fbe642d3bf78092d2d86ffcd02d6471fc6745e9c0dc97abbdf50f620ed4481b2` |

## Multiscale

### Frozen interpretation

- **SOURCE FACT:** Three parameter records and three disk/ring spectrum pairs are stored separately (`SmoothLifeMultiscale/main.cpp:64-177`). Startup consumes catalogue rows in consecutive triples and defaults to composition method 0 and kernel method 1 (`2760-2894`).
- **SOURCE FACT:** Independent inputs are `(ring_i(A),disk_i(A))`; chained inputs are `(ring_0,ring_1)`, `(ring_1,ring_2)`, `(ring_2,disk_2)` (`2926-3023`).
- **SOURCE FACT:** Sequential recomputes after each clamped update. Ordered clamped sum and arithmetic-mean increment evaluate one shared snapshot; their exact legacy accumulation is in `integrate2D.frag:17-51`.
- **CORRECTED DEFAULT:** The rewrite supports all six 2×3 combinations in 2-D with explicit current/snapshot references and corrected growth/relaxation increments. Sequential always recomputes; shared-snapshot methods never consume updated or stale fields.
- **CORRECTED DEFAULT:** Standard FFT, `512²`, independent inputs, sequential composition, deterministic seed/initializer, and palette 7 are migration-era defaults only if a future local preset is deliberately authored; the retired catalogue itself supplies none of those product dependencies.
- **REJECTED DEFECT:** Multiscale discrete dynamics is rejected until a target-aggregation enum exists. Also rejected: additive mode-0 targets, stale chained fields, undefined mode-2 source/reference, texture feedback, and empty 1-D/3-D integration branches (`SmoothLifeMultiscale/main.cpp:2038-2134`).

### Consulted multiscale files

| Source-relative path | Relevant lines | SHA-256 | Evidence |
| --- | ---: | --- | --- |
| `SmoothLifeMultiscale/main.cpp` | 1-240, 2030-2149, 2740-3112 | `8481ed79b68efb9b824c95d5707477e3d60d213b0ee2ff6cb99a7d2f2484e07e` | Controls/parser/storage, 2-D-only integration dispatch, defaults, six pipelines. |
| `SmoothLifeMultiscale/shaders/snm2D.frag` | 1-129 | `ecf572a8f4262e3cebdca2e086059c63d2cf553a3c195a679792757a3c9a507e` | Per-scale target/increment and missing clamp. |
| `SmoothLifeMultiscale/shaders/integrate2D.frag` | 1-51 | `3276fe14b814e48883dc3eec735e7bd68e06c12ef96acfb1d8ed32fdc924e0ee` | Sequential one-response update, ordered clamped sum, mean increment. |

## Sphere

### Frozen interpretation

- **SOURCE FACT:** Six active `K×K` faces use `K=128`, internal `R=K/2`, and a `3*K*6` by `3*K` atlas (`SmoothLifeSphere/main.cpp:62-76,351-397`).
- **SOURCE FACT:** Face directions use normalized face bases plus tangent coordinates; alpha stores spherical cell area (`512-564`). The original side table and gutter copies are at `765-858`.
- **SOURCE FACT:** Distance is `R*acos(dot(a,b))`; `ri=ra/3`, widths are one, planar radii are converted geodesically, cap areas provide analytic normalization, and updates are replacement or fixed `A+0.1(2S-1)` (`SmoothLifeSphere/main.cpp:1368-1392`; `program.frag:110-162`).
- **CORRECTED DEFAULT:** `SphereModel::Corrected` completes edge/corner mapping, clamps dot products, uses explicit initialized ping-pong resources, and normalizes each center by actual `cell_area*kernel_weight` sums so a constant field remains constant.
- **RETAINED HISTORICAL OPTION:** `SphereModel::Legacy` retains the six-face atlas, side gutters with masked corner sectors, tangent cube-sphere geometry, original radius conversion/search stencil, analytic cap normalization, and the original replacement/fixed-0.1 dynamics.
- **REJECTED DEFECT:** Both models reject unclamped `acos`, undefined atlas contents, and texture feedback. The legacy option is geometrical/numerical, not unsafe-resource compatibility.

### Consulted sphere files

| Source-relative path | Relevant lines | SHA-256 | Evidence |
| --- | ---: | --- | --- |
| `SmoothLifeSphere/main.cpp` | 1-180, 351-960, 1220-1506 | `c770fb36c562135d4bc65aeae36d71ae725286b05aa0ee37f92b6e6f0ddf8b1e` | Config/defaults, atlas allocation, directions/areas, face mapping, rendering, radius conversion, initialization, frame loop. |
| `SmoothLifeSphere/program.frag` | 1-162 | `037da34db6a050422c372bb458c78553df5ca00e22a26e1ced455f0007c6ce21` | Direct geodesic stencil, analytic normalization, common rule, fixed update. |
| `SmoothLifeSphere/SmoothLifeLog.txt` | 1-62 | `535680b9f1669e98ff8ac49882951bc0fa13112607d086d965bc40841f626cdd` | Recorded K/R, planar/geodesic radii, analytic areas, historical environment; evidence only. |

## Delayed time

### Frozen interpretation

- **SOURCE FACT:** The field is periodic in x/y and history is a repeat-wrapped 3-D texture of exactly 16 layers (`SmoothLifeDT/main.cpp:330-394`).
- **SOURCE FACT:** `ri=ra/3`, both widths are one, and the discrete stencil is numerically normalized (`SmoothLifeDT/main.cpp:709-740`).
- **SOURCE FACT:** Spatial radius selects a history coordinate offset by `-distance/16`; smooth mode reads one layer behind and adds fixed `0.1(2S-1)` (`SmoothLifeDT/program.frag:105-137`). The main loop writes output into `layer`, then increments modulo 16 (`SmoothLifeDT/main.cpp:932-1027`).
- **CORRECTED DEFAULT:** `head` means next layer to overwrite, `latest=wrap(head-1,16)`, and each radial sample uses `wrap(latest-floor(distance+0.5),16)`. Delay zero therefore reads the latest committed state. All layers are initialized from one deterministic seeded field.
- **CORRECTED DEFAULT:** A future local preset may deliberately choose `512²`, seed 1, 1,000 deterministic 10–19 boxes, and palette 7; these are modern choices, not facts obtained from the retired catalogue.
- **REJECTED DEFECT:** The historical head anomaly—distance zero reading the layer currently being produced/uninitialized—is not selectable. Window-sized shape, gradual history filling, undefined layers, and platform-random boxes are also rejected.

### Consulted delayed-time files

| Source-relative path | Relevant lines | SHA-256 | Evidence |
| --- | ---: | --- | --- |
| `SmoothLifeDT/main.cpp` | 1-160, 330-419, 690-1069 | `0595a283ce29a42ff7e1afc5dc835488feb22e52b85d9ee2e73fdcd75ec767a4` | Config, periodic 16-layer allocation, sampled normalization, window-sized setup, head loop, random boxes. |
| `SmoothLifeDT/program.frag` | 1-137 | `ec5b83df80d39996e99603c5195a43c3ccd0facc22106ab5359e81c8ca318f8e` | Radius-dependent temporal lookup, common rule, fixed smooth update. |
| `SmoothLifeDT/SmoothLifeLog.txt` | 1-64 | `9e14a8712c71900d10787c8b057b18dfe260a4c694ba843da08bc95b50d9654e` | Recorded analytic/sampled sums, shape, and historical environment; evidence only. |

## CPU references

### Role and interpretation

- **SOURCE FACT:** `SmoothLifeFB.bas` is a double-precision, threaded packed-unitary 2-D reference. It contains sampled kernels, packed FFT stages, `sqrt(N)/kernel_sum`, growth derivative, and deterministic mathematical AB startup formulas (`1-300,500-809,870-908`).
- **SOURCE FACT:** `SmoothLifeFB_old.bas` is the earlier discrete packed-FFT reference; it directly commits the target and is useful as an independent data-flow check, not as a supported backend definition (`1-260,570-589`).
- **SOURCE FACT:** Matlab constructs periodic sampled kernels and standard FFT convolution and explicitly compares Euler, improved Euler, AB3 startup, and RK4 with intermediate clamps (`SmoothLifeMatlab/smoothlife.m:1-199`). `result.txt` is historical numerical evidence, not a golden generated by this rewrite.
- **SOURCE FACT:** `GliderConstructor.bas` is an inverse-design/lookup-table experiment with collision reporting, not a general simulator (`1-254`).
- **CORRECTED DEFAULT:** CPU code serves as an oracle for formulas and fixtures. Its platform RNG, drawing, fixed sizes, commented alternatives, and UI behavior are not implementation requirements.
- **REJECTED DEFECT:** AB4, improved Euler, the glider constructor, and old direct-discrete implementation do not expand the mandatory option set. Exactly three historical options remain: RK4 step-origin reference, packed-unitary FFT, and legacy sphere model.

### Consulted CPU/reference files

| Source-relative path | Relevant lines | SHA-256 |
| --- | ---: | --- |
| `SmoothLifeFreeBasic/SmoothLifeFB.bas` | 1-300, 500-909 | `e652379593823fee31cd1a9cf7acc779803aaf04d8efe3f1c0d2f3bf67acd1cb` |
| `SmoothLifeFreeBasic/SmoothLifeFB_old.bas` | 1-260, 570-589 | `0cf2f0eebeaf250209bccaf418dccbe99641ede080bb3930fe54d733b281dbd5` |
| `SmoothLifeFreeBasic/GliderConstructor.bas` | 1-254 | `3afe897aeb2b2ae24e0cc3c8f7371b4ab89ef033ad4524b3f6ef3320f8f5cd26` |
| `SmoothLifeMatlab/smoothlife.m` | 1-199 | `5de29b0fa2d46a9e53d8744f1eeb410bb6c8f7f490ec69be724f4c19a00b4643` |
| `SmoothLifeMatlab/result.txt` | 1-69 | `405c8b43beb77bf883bb00e2471abb88dd50497292162fb709539cd62de2fcf8` |

## Retired catalogues and logs

### Non-import policy

The legacy catalogues are **PROVENANCE ONLY**.

- There is **no JSONL capture** in this task.
- There is **no catalogue migration** in this task.
- There is **no product preset dependency** on any legacy config, catalogue, log, path, row order, or description.
- Application code, tests, builds, and future import outputs must not open the legacy root.
- A future local preset may quote a row only through a separate, explicit, reviewed decision that records its provenance and fills every modern field. It must not revive a live importer or hidden dependency.

Static reconciliation of the files actually present:

| Catalogue | Static contents and parser fact | Status |
| --- | --- | --- |
| Main | 188 lines begin with `1`, `2`, or `3`; `read_config` accepts exactly that first-byte condition. The historical log independently records 188. | Provenance only; no capture or migration. |
| SDL | 187 lines begin with `1`, `2`, or `3`. It is largely duplicate/drifted main data and includes a mode-4 row at line 174. | Provenance only; no SDL product backend. |
| Multiscale | 12 accepted rows, interpreted by startup as four consecutive triplets; the first triplet is duplicated in the `old` section. | Provenance only; grouping evidence only. |
| Sphere | Two numeric candidate rows are physically present at lines 1-2, but `read_config` performs one fixed sequence of `fscanf` calls and therefore loads only the first tuple at startup. | Runtime-accepted count is one; both physical rows remain provenance only. |
| Delayed time | 38 numeric candidate rows are physically present at lines 1-42, but `read_config` likewise loads only the first tuple. This does **not** reconcile with the obsolete Macrostep-00 draft expectation of 29 rows. | Record the discrepancy; do not normalize, capture, or migrate it. Runtime-accepted count is one. |

### Consulted catalogue/config/log files

| Source-relative path | Relevant lines | SHA-256 | Evidence |
| --- | ---: | --- | --- |
| `SmoothLife/SmoothLifeConfig.txt` | 1-219 | `7085be7825a98df0fc3c68d6e9b4da3558955d77dc9f11861d6b1575a0b618a7` | Main raw catalogue and comments. |
| `SmoothLife/SmoothLifeLog.txt` | 1-321 | `295c29ed08d3f9028128fbee49be4de614bf5c4b6778585335b72fe7f1601877` | Historical row count, environment, shader/resource trace, kernel sums; evidence only. |
| `SmoothLifeSDL/SmoothLifeConfig.txt` | 1-219 | `bc86b688f61d325d8b0eed56367dcd0e3eaf16d78bffa90611678f8d614d1c75` | SDL raw catalogue and drift. |
| `SmoothLifeMultiscale/SmoothLifeConfig.txt` | 1-37 | `fd8749d8557e0b927932796a4dcebdb881898fac77503f263b363320f8185985` | Twelve rows/four triplets. |
| `SmoothLifeMultiscale/SmoothLifeLog.txt` | 1-314 | `9f8deb473f9a3e110291537705f2dfdce1a202ffa3cfccf6267c335441ac471c` | Historical 12-row count and environment/resource trace; evidence only. |
| `SmoothLifeSphere/SmoothLifeConfig.txt` | 1-11 | `6aa28438e4a53cab66e0229192235c4699bc518ec8a41e5f6bf6650efa36afa6` | Two physical candidate rows; fixed parser consumes first only. |
| `SmoothLifeDT/SmoothLifeConfig.txt` | 1-50 | `717bf025c67c3bfc8fd266ba8c7b5c871813e3c0030455daa8f5ea87a6b93cb4` | Thirty-eight physical numeric rows; fixed parser consumes first only. |

## Future legacy-consultation protocol

Normal implementation must proceed from the local contract+spec set without reopening the legacy root. Future consultation is allowed only when all of the following hold:

1. A concrete discrepancy is stated: local authority is ambiguous, a fixture disagrees, or two local claims conflict.
2. The exact legacy source-relative path and 1-based line range are recorded.
3. The complete consulted file is SHA-256 hashed and added or updated here.
4. The finding is classified as **SOURCE FACT**, **CORRECTED DEFAULT**, **RETAINED HISTORICAL OPTION**, or **REJECTED DEFECT**.
5. Any implementation-relevant conclusion is copied into the local contract/spec and covered by a local fixture or test; a link to the legacy path is never sufficient.
6. No legacy executable is run. If static evidence cannot resolve the discrepancy, stop and request an explicit new decision rather than infer behavior from an unsafe run.

After that copy-back, the local contract+spec remains the implementation authority and the legacy tree returns to provenance-only status.