diff --git a/.gitignore b/.gitignore
index 2b3e3aa..8247e23 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@
 .idea/
 .vscode/
 .venv/
+.venv*/
 __pycache__/
 *.py[cod]
 *.egg-info/
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index acc55f9..d373c42 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -34,12 +34,18 @@ evaluation artifacts use calendar versioning without a `v` prefix.
 | Dataset release | `data-2026.08.12` | `data-2026.08.12.1` |
 | Schema release | `canonical-table-record-2026.08.12` | `canonical-table-record-2026.08.12.1` |
 | Experiment | `experiment-2026.08.12-<topic>` | append `.1` when needed |
+| Data smoke | `data-smoke-2026.08.12` | `data-smoke-2026.08.12.1` |
 
 Use the most precise meaningful date. The identifier does not claim that every
 artifact was created at exactly the same time; its purpose is to distinguish
 research states reproducibly. Upstream packages, datasets, and benchmarks keep
 their official external version names.
 
+Project-authored research documents other than conventional repository files
+such as `README.md`, `CONTRIBUTING.md`, and `LICENSE` include their CalVer in
+the filename. Do not rename upstream action versions, benchmark releases,
+pretrained-model names, or historical source-dataset identifiers.
+
 ## Branches and pull requests
 
 Use a focused branch from the current default branch:
diff --git a/README.md b/README.md
index fb7ca2b..641eb75 100644
--- a/README.md
+++ b/README.md
@@ -26,13 +26,14 @@ OmniDocBench is used as one document-parsing evaluation protocol. The methods
 and infrastructure in this repository are designed around the broader research
 problem of table structure recognition.
 
-## Research snapshot 2026.08.12
+## Research snapshot 2026.08.12.1
 
-The `2026.08.12` snapshot establishes the shared representation and evaluation
-foundation for two independent modeling tracks. It includes Canonical Table
-normalization, order-invariant topology targets, candidate-integrity checks,
-table-only model interfaces, and synthetic data-free tests. Model checkpoints
-and dataset payloads are maintained outside this repository.
+The `2026.08.12.1` snapshot establishes the shared representation, evaluation,
+and synthetic-corpus specification for two independent modeling tracks. It
+includes Canonical Table normalization, order-invariant topology targets,
+candidate-integrity checks, table-only model interfaces, a frozen 256-record
+generator-smoke design, and data-free regression tests. Model checkpoints and
+dataset payloads are maintained outside this repository.
 
 Project-authored releases follow calendar versioning:
 
@@ -54,7 +55,7 @@ separate signals so that a structural hypothesis can be inspected and replayed.
 The current repository includes the candidate representation, reversible
 interface, and validation primitives needed by the model.
 
-See [Explicit Layout Transformer](docs/methods/EXPLICIT_LAYOUT_TRANSFORMER.md).
+See [Explicit Layout Transformer](docs/methods/EXPLICIT_LAYOUT_TRANSFORMER_2026.08.12.1.md).
 
 ### LoRA Table Model
 
@@ -96,11 +97,11 @@ The common foundation provides:
 borderless-table-structuring-lab/
 ├── dataset/                   # External dataset registry; no payloads
 ├── docs/
-│   ├── methods/               # Research-track formulations
-│   ├── DATA_GOVERNANCE.md
-│   ├── DATASET_STORAGE_AND_SHARING.md
-│   ├── REPRODUCIBILITY.md
-│   └── SYNTHETIC_CORPUS_SPECIFICATION.md
+│   ├── corpus/                # CalVer data specifications and policies
+│   ├── experiment-records/    # Sealed public research evidence
+│   ├── methods/               # CalVer research-track formulations
+│   └── REPRODUCIBILITY_2026.08.12.1.md
+├── configs/                   # Calendar-versioned generation parameters
 ├── schemas/                   # Calendar-versioned record schemas
 ├── src/borderless_table_structuring/
 │   ├── canonical.py           # Canonical table normalization
@@ -142,8 +143,8 @@ compression, blur, background, and scanning artifacts.
 Dataset roles are assigned by document, template, content, renderer, and seed
 families before rendering. Exact and near-duplicate audits operate on images,
 text, normalized structure, geometry, and provenance. See the
-[synthetic corpus specification](docs/SYNTHETIC_CORPUS_SPECIFICATION.md) and
-[data governance guide](docs/DATA_GOVERNANCE.md).
+[synthetic data specification](docs/corpus/SYNTHETIC_DATA_SPECIFICATION_2026.08.12.1.md)
+and [data governance guide](docs/corpus/DATA_GOVERNANCE_2026.08.12.1.md).
 
 ## Installation
 
@@ -172,8 +173,8 @@ and complete failure accounting. Dataset payloads and model weights are stored
 outside Git; this repository contains the code, schemas, manifests, and
 documentation needed to reproduce them.
 
-For details, see [Reproducibility](docs/REPRODUCIBILITY.md) and
-[Dataset Storage and Sharing](docs/DATASET_STORAGE_AND_SHARING.md).
+For details, see [Reproducibility](docs/REPRODUCIBILITY_2026.08.12.1.md) and
+[Dataset Storage and Sharing](docs/corpus/DATASET_STORAGE_AND_SHARING_2026.08.12.1.md).
 
 ## Collaboration
 
diff --git a/configs/generation_parameters_2026.08.12.1.json b/configs/generation_parameters_2026.08.12.1.json
new file mode 100644
index 0000000..bc68a20
--- /dev/null
+++ b/configs/generation_parameters_2026.08.12.1.json
@@ -0,0 +1,75 @@
+{
+  "configuration_release": "2026.08.12.1",
+  "dataset_release": "data-smoke-2026.08.12.1",
+  "schema_release": "synthetic-table-record-2026.08.12.1",
+  "seed_namespace": "borderless-table-structuring-data-smoke-2026.08.12.1",
+  "seed_start": 202608120100000,
+  "requested_records": 256,
+  "allow_failed_seed_replacement": false,
+  "gate_costs": {
+    "false_edit": 4.0,
+    "missed_edit": 1.0,
+    "uncertain_action": "KEEP"
+  },
+  "categories": {
+    "exact_keep": {"count": 64, "gate_label": "KEEP"},
+    "hard_keep": {"count": 64, "gate_label": "KEEP"},
+    "single_minimal_edit": {"count": 64, "gate_label": "EDIT"},
+    "complex_correction": {"count": 64, "gate_label": "EDIT"}
+  },
+  "roles_per_category": {
+    "train": 44,
+    "development": 12,
+    "holdout": 8
+  },
+  "counterfactual_pairs": {
+    "minimum_pairs": 64,
+    "same_role_required": true,
+    "shared_fields": [
+      "content_family_id",
+      "template_family_id",
+      "font_family_id",
+      "renderer_family_id",
+      "base_degradation"
+    ]
+  },
+  "structure": {
+    "rows": {"minimum": 2, "maximum": 28},
+    "columns": {"minimum": 2, "maximum": 14},
+    "header_depth": {"minimum": 0, "maximum": 4},
+    "span_fraction": {"minimum": 0.0, "maximum": 0.45},
+    "empty_cell_fraction": {"minimum": 0.0, "maximum": 0.35},
+    "maximum_cells": 240
+  },
+  "rendering": {
+    "canvas_width_px": [960, 1280, 1600, 2048],
+    "dpi": [96, 150, 200, 300],
+    "font_size_px": {"minimum": 12, "maximum": 32},
+    "cell_padding_px": {"minimum": 4, "maximum": 18},
+    "rotation_degrees": {"minimum": -4.0, "maximum": 4.0},
+    "border_alpha": {"minimum": 0.0, "maximum": 1.0},
+    "jpeg_quality": {"minimum": 55, "maximum": 100},
+    "gaussian_blur_radius": {"minimum": 0.0, "maximum": 1.8},
+    "noise_sigma": {"minimum": 0.0, "maximum": 12.0}
+  },
+  "corruptions": {
+    "single_minimal_edit_exactly_one": true,
+    "complex_correction_minimum_operations": 2,
+    "complex_correction_maximum_operations": 4,
+    "allowed": [
+      "extra_split",
+      "missing_split",
+      "incorrect_merge",
+      "missing_merge",
+      "span_extent_error",
+      "token_ownership_error",
+      "geometry_inconsistency",
+      "localized_grid_coverage_error"
+    ]
+  },
+  "determinism": {
+    "semantic_replay_runs": 2,
+    "normalized_pixel_replay_runs": 2,
+    "sha256_algorithm": "sha256"
+  }
+}
diff --git a/dataset/README.md b/dataset/README.md
index 43b0ccb..ab9a368 100644
--- a/dataset/README.md
+++ b/dataset/README.md
@@ -6,13 +6,13 @@ dataset references used by reproducible experiments.
 ## Active dataset entry template
 
 ```yaml
-dataset_name: borderless-table-structuring-data
+dataset_name: data-2026.08.12.1
 service: private-hugging-face-or-approved-object-store
 repository: DearKarl/borderless-table-structuring-data
 revision: null
 root_manifest_sha256: null
-schema_release: null
-research_snapshot: null
+schema_release: synthetic-table-record-2026.08.12.1
+research_snapshot: 2026.08.12.1
 roles_available: []
 license_manifest_sha256: null
 overlap_audit_sha256: null
diff --git a/docs/REPRODUCIBILITY.md b/docs/REPRODUCIBILITY_2026.08.12.1.md
similarity index 95%
rename from docs/REPRODUCIBILITY.md
rename to docs/REPRODUCIBILITY_2026.08.12.1.md
index e635ac3..fa82cdc 100644
--- a/docs/REPRODUCIBILITY.md
+++ b/docs/REPRODUCIBILITY_2026.08.12.1.md
@@ -1,4 +1,4 @@
-# Reproducibility
+# Reproducibility 2026.08.12.1
 
 ## Immutable inputs
 
@@ -17,6 +17,7 @@ Never reuse an output directory. A run writes to a new directory containing:
 - `quarantine.jsonl`;
 - `SHA256SUMS`;
 - `EXPERIMENT_RECORD.md`;
+- `EVIDENCE_CARD.md`;
 - an immutable checksum manifest.
 
 ## Determinism
diff --git a/docs/SYNTHETIC_CORPUS_SPECIFICATION.md b/docs/SYNTHETIC_CORPUS_SPECIFICATION.md
deleted file mode 100644
index e8985cf..0000000
--- a/docs/SYNTHETIC_CORPUS_SPECIFICATION.md
+++ /dev/null
@@ -1,80 +0,0 @@
-# Synthetic Corpus Specification
-
-Research snapshot: `2026.08.12`
-
-Status: `RESEARCH_DRAFT`
-
-## Primary record contract
-
-Every record contains a source-traceable rendered table, direct Canonical Table
-Gold, OCR token sidecar, physical geometry, a Raw-like prior, and an
-order-invariant structural difference. Ordered action programs may be retained
-as replay evidence but are not primary supervision.
-
-Required identity fields:
-
-- `sample_id`;
-- `document_cluster_id`;
-- `template_family_id`;
-- `content_family_id`;
-- `renderer_family_id`;
-- `generation_seed`;
-- `role`;
-- `schema_release`.
-
-Required provenance fields:
-
-- generator and calendar release;
-- source and license decision;
-- font sources;
-- render and degradation parameters;
-- record and payload SHA256 values;
-- explicit confirmation that terminal inputs were not used.
-
-## Phenomenon coverage matrix
-
-| Family | Required variants | Safety counterexample |
-|---|---|---|
-| Headers | single, multi-level, irregular | correct Raw structure requiring KEEP |
-| Spans | row, column, mixed 2D | visually aligned cells that must not merge |
-| Corrections | split-only, merge-only, joint | zero-edit identity |
-| Borders | weak, missing, partial, low contrast | visible guides that are not cell borders |
-| Empty cells | empty, near-empty, whitespace | meaningful sparse text |
-| Text | dense, small, long, multiline, mixed script | Raw OCR text that must remain frozen |
-| Formulas | formula-only, mixed formula/text | ordinary symbols that are not formulas |
-| Imaging | rotation, blur, compression, scan noise | clean high-resolution render |
-| Local errors | one minimal reversible topology error | broad edits prohibited |
-
-## Distribution principles
-
-- KEEP examples must be substantial enough that editing is not the default
-  prior.
-- Difficulty is balanced by template family rather than post-hoc metric
-  selection.
-- Correction types are sampled before rendering.
-- Degradation parameters are sampled independently within preregistered ranges.
-- No distribution parameter is calibrated using terminal scores.
-
-Exact numerical ranges and requested counts must be frozen in a separate
-preregistration before the bounded generator smoke.
-
-## Split policy
-
-Assign document, template, content, renderer, and seed families to one role
-before rendering. No template family crosses train, development, holdout, or
-terminal roles.
-
-## Acceptance tests
-
-- Canonical legality and complete grid coverage.
-- Direct Gold recompilation.
-- Complete, unique OCR token ownership.
-- Finite and non-degenerate physical geometry.
-- Deterministic semantic replay.
-- Source and license completeness.
-- Exact, perceptual, structure, text, source, and geometry overlap audit.
-- Complete generated, passed, quarantined, and failed counts.
-
-An unresolved overlap, license ambiguity, terminal-data risk, missing
-geometry, token loss, illegal topology, or nondeterministic replay is a hard
-stop.
diff --git a/docs/corpus/ACCEPTANCE_CRITERIA_2026.08.12.1.md b/docs/corpus/ACCEPTANCE_CRITERIA_2026.08.12.1.md
new file mode 100644
index 0000000..3d83a67
--- /dev/null
+++ b/docs/corpus/ACCEPTANCE_CRITERIA_2026.08.12.1.md
@@ -0,0 +1,63 @@
+# Acceptance Criteria 2026.08.12.1
+
+Status: `FROZEN_FOR_GENERATOR_SMOKE`
+
+## Preregistered smoke gate
+
+`data-smoke-2026.08.12.1` passes only when all criteria below pass. No failed
+seed may be silently replaced, no category quota may be rebalanced after
+generation, and no model performance metric may be used to select records.
+
+| Criterion | Required result | Failure action |
+|---|---:|---|
+| Requested records | 256 | Stop |
+| Generated records | 256 | Stop |
+| Accepted records | 256 | Stop |
+| Exact KEEP / Hard KEEP / Single / Complex | 64 / 64 / 64 / 64 | Stop |
+| Counterfactual pairs | at least 64 complete same-role pairs | Stop |
+| Schema validation | 256/256 | Stop |
+| Canonical legality | 256/256 | Stop |
+| Complete grid coverage | 256/256 | Stop |
+| Gold recompilation | 256/256 semantic identity | Stop |
+| Unique OCR-token ownership | 100% of owned tokens | Stop |
+| Finite complete geometry | 256/256 | Stop |
+| KEEP semantic identity | 128/128 | Stop |
+| EDIT replay to Gold | 128/128 | Stop |
+| Explicit KEEP empty diff | 128/128 | Stop |
+| LoRA target completeness | 256/256 | Stop |
+| Semantic replay | identical across 2 runs | Stop |
+| Normalized-pixel replay | identical across 2 runs | Stop |
+| Source and license inventory | complete and approved | Stop |
+| Cross-role exact overlap | 0 | Stop |
+| Cross-role unresolved near overlap | 0 | Stop |
+| Terminal-input usage | false for every record | Stop |
+| Complete count accounting | requested/generated/accepted/quarantined/failed | Stop |
+
+## Validation reason codes
+
+Every failure uses a stable reason code, including:
+
+- `SCHEMA_INVALID`;
+- `CANONICAL_ILLEGAL`;
+- `GRID_INCOMPLETE`;
+- `GOLD_RECOMPILE_MISMATCH`;
+- `TOKEN_OWNERSHIP_INVALID`;
+- `GEOMETRY_INVALID`;
+- `KEEP_NOT_IDENTITY`;
+- `EDIT_NOT_REPLAYABLE`;
+- `NONDETERMINISTIC_SEMANTICS`;
+- `NONDETERMINISTIC_PIXELS`;
+- `SOURCE_OR_LICENSE_INCOMPLETE`;
+- `CROSS_ROLE_EXACT_OVERLAP`;
+- `CROSS_ROLE_NEAR_OVERLAP`;
+- `TERMINAL_DERIVATION_RISK`.
+
+Quarantine manifests preserve every failed record identifier, frozen seed,
+reason code, and diagnostic hash. Visual examples are QA evidence only.
+
+## Post-pass boundary
+
+A sealed pass authorizes a new non-overwriting shared-corpus build with frozen
+distributions. It does not authorize Explicit or LoRA training. Corpus scale is
+chosen from measured generation cost, coverage, and quarantine rate, not from
+current official benchmark scores.
diff --git a/docs/COLLABORATOR_HANDOFF.md b/docs/corpus/COLLABORATOR_HANDOFF_2026.08.12.1.md
similarity index 83%
rename from docs/COLLABORATOR_HANDOFF.md
rename to docs/corpus/COLLABORATOR_HANDOFF_2026.08.12.1.md
index 38a3cd7..aa8ed6f 100644
--- a/docs/COLLABORATOR_HANDOFF.md
+++ b/docs/corpus/COLLABORATOR_HANDOFF_2026.08.12.1.md
@@ -1,4 +1,4 @@
-# Collaborator Handoff
+# Collaborator Handoff 2026.08.12.1
 
 ## Goal
 
@@ -23,6 +23,13 @@ Deliverables:
 - exact and perceptual duplicate reports;
 - an English experiment record.
 
+The frozen starting point is the
+[`2026.08.12.1` synthetic-data specification](SYNTHETIC_DATA_SPECIFICATION_2026.08.12.1.md),
+its [coverage matrix](COVERAGE_MATRIX_2026.08.12.1.csv), and the
+[`2026.08.12.1` generation parameters](../../configs/generation_parameters_2026.08.12.1.json).
+Changes require a new CalVer revision; collaborators must not edit the frozen
+files in place.
+
 ## Other work packages
 
 ### Coverage specification
diff --git a/docs/corpus/COVERAGE_MATRIX_2026.08.12.1.csv b/docs/corpus/COVERAGE_MATRIX_2026.08.12.1.csv
new file mode 100644
index 0000000..fff5425
--- /dev/null
+++ b/docs/corpus/COVERAGE_MATRIX_2026.08.12.1.csv
@@ -0,0 +1,30 @@
+category,gate_label,phenomenon,requested_count,train_count,development_count,holdout_count,counterfactual_pair_required,primary_risk
+exact_keep,KEEP,simple_regular,12,8,2,2,false,false_edit
+exact_keep,KEEP,hierarchical_header,12,8,2,2,false,false_edit
+exact_keep,KEEP,row_or_column_span,12,8,2,2,false,false_edit
+exact_keep,KEEP,empty_or_sparse_cells,8,6,2,0,false,false_edit
+exact_keep,KEEP,dense_or_multiline_text,8,6,2,0,false,text_loss
+exact_keep,KEEP,mixed_script_or_formula,6,4,2,0,false,text_loss
+exact_keep,KEEP,clean_high_resolution_control,6,4,0,2,false,false_edit
+hard_keep,KEEP,multilevel_irregular_header,12,8,2,2,true,false_edit
+hard_keep,KEEP,mixed_two_dimensional_spans,12,8,2,2,true,false_edit
+hard_keep,KEEP,weak_missing_or_partial_borders,12,8,2,2,true,false_edit
+hard_keep,KEEP,empty_near_empty_or_sparse,8,6,2,0,true,false_edit
+hard_keep,KEEP,dense_small_long_or_multiline_text,8,6,2,0,true,text_loss
+hard_keep,KEEP,rotation_blur_compression_or_noise,8,4,2,2,true,false_edit
+hard_keep,KEEP,color_background_or_alignment_trap,4,4,0,0,true,false_edit
+single_minimal_edit,EDIT,extra_split,12,8,2,2,true,cell_inflation
+single_minimal_edit,EDIT,missing_split,10,6,2,2,true,under_segmentation
+single_minimal_edit,EDIT,incorrect_merge,10,6,2,2,true,content_reassignment
+single_minimal_edit,EDIT,missing_merge,10,6,2,2,true,over_segmentation
+single_minimal_edit,EDIT,span_extent_error,8,6,2,0,true,topology_error
+single_minimal_edit,EDIT,token_ownership_error,6,4,2,0,true,text_loss
+single_minimal_edit,EDIT,geometry_inconsistency,4,4,0,0,true,location_error
+single_minimal_edit,EDIT,localized_grid_coverage_error,4,4,0,0,true,illegal_grid
+complex_correction,EDIT,multilevel_header_with_spans,12,8,2,2,false,topology_error
+complex_correction,EDIT,joint_split_and_merge,12,8,2,2,false,cell_inflation
+complex_correction,EDIT,weak_border_with_topology_error,10,6,2,2,false,missed_edit
+complex_correction,EDIT,empty_cells_with_spans,8,6,2,0,false,ownership_error
+complex_correction,EDIT,dense_multiline_with_topology_error,8,6,2,0,false,text_loss
+complex_correction,EDIT,mixed_script_formula_with_topology_error,6,4,2,0,false,text_loss
+complex_correction,EDIT,rotation_noise_with_topology_error,8,6,0,2,false,geometry_error
diff --git a/docs/DATASET_STORAGE_AND_SHARING.md b/docs/corpus/DATASET_STORAGE_AND_SHARING_2026.08.12.1.md
similarity index 98%
rename from docs/DATASET_STORAGE_AND_SHARING.md
rename to docs/corpus/DATASET_STORAGE_AND_SHARING_2026.08.12.1.md
index 1c470b3..ca0fddb 100644
--- a/docs/DATASET_STORAGE_AND_SHARING.md
+++ b/docs/corpus/DATASET_STORAGE_AND_SHARING_2026.08.12.1.md
@@ -1,4 +1,4 @@
-# Dataset Storage and Sharing
+# Dataset Storage and Sharing 2026.08.12.1
 
 ## Recommended architecture
 
diff --git a/docs/DATA_GOVERNANCE.md b/docs/corpus/DATA_GOVERNANCE_2026.08.12.1.md
similarity index 92%
rename from docs/DATA_GOVERNANCE.md
rename to docs/corpus/DATA_GOVERNANCE_2026.08.12.1.md
index 5a41645..0cee62a 100644
--- a/docs/DATA_GOVERNANCE.md
+++ b/docs/corpus/DATA_GOVERNANCE_2026.08.12.1.md
@@ -1,4 +1,4 @@
-# Data Governance
+# Data Governance 2026.08.12.1
 
 ## Roles
 
@@ -6,6 +6,9 @@ Every record has exactly one immutable role: `train`, `development`,
 `holdout`, or `terminal`. Roles are assigned before rendering and before any
 model or metric is run.
 
+The active smoke allocation and role-level counts are frozen in
+[`SPLIT_AND_ISOLATION_POLICY_2026.08.12.1.md`](SPLIT_AND_ISOLATION_POLICY_2026.08.12.1.md).
+
 ## Required provenance
 
 Every generated or newly sourced record must include:
diff --git a/docs/corpus/LICENSE_AND_SOURCE_POLICY_2026.08.12.1.md b/docs/corpus/LICENSE_AND_SOURCE_POLICY_2026.08.12.1.md
new file mode 100644
index 0000000..4269e83
--- /dev/null
+++ b/docs/corpus/LICENSE_AND_SOURCE_POLICY_2026.08.12.1.md
@@ -0,0 +1,72 @@
+# License and Source Policy 2026.08.12.1
+
+Status: `FROZEN_FOR_GENERATOR_SMOKE`
+
+## Scope
+
+This policy governs every content item, font, texture, rendering asset, source
+table, prior parser, and external dataset referenced by
+`data-smoke-2026.08.12.1` and later corpus builds derived from its generator.
+
+## Default source policy
+
+The smoke uses newly authored synthetic content. It does not ingest evaluation
+pages, scraped documents, customer records, or third-party table annotations.
+Names, values, formulas, and prose are generated from project-authored grammar
+and deterministic seed tables.
+
+## Allowed source decisions
+
+Every source receives one decision:
+
+- `APPROVED_REDISTRIBUTABLE`: redistribution and derivative use are compatible
+  with the intended research release.
+- `APPROVED_REBUILD_ONLY`: local processing is allowed, but payloads may not be
+  redistributed; only compilers, acquisition instructions, and hashes may be
+  shared.
+- `QUARANTINED`: rights, attribution, origin, or downstream-use terms are
+  incomplete, incompatible, or disputed.
+
+Private access is not evidence of redistribution permission.
+
+## Required inventory fields
+
+The machine-readable source inventory records:
+
+- source identifier, title, owner, and acquisition URL or authored origin;
+- acquisition date and immutable revision where available;
+- license name, version, URL, and license-text SHA256;
+- redistribution, modification, derivative, research, and commercial-use
+  decisions;
+- attribution and notice requirements;
+- reviewer, decision date, decision, and rationale;
+- payload or source-manifest SHA256.
+
+## Font and rendering assets
+
+The initial smoke permits project-authored assets, public-domain assets, and
+fonts with explicit redistribution and embedding rights, such as compatible
+SIL Open Font License or Apache License releases. Each font file is pinned by
+family, source URL, license, revision, and SHA256. System fonts with unclear
+redistribution rights may be used only in `APPROVED_REBUILD_ONLY` outputs.
+
+## Benchmark exclusion
+
+Current OmniDocBench and Customer50 images, crops, text, coordinates, HTML,
+LaTeX, identifiers, metadata, annotations, embeddings, or transformations are
+prohibited. Public benchmark attribute names may inform coverage categories;
+they may not provide record content.
+
+## External dataset rule
+
+An external dataset may enter a later dated corpus only through a new source
+decision, an isolation audit, and a dated specification revision. Dataset
+licenses remain independent of code-repository licensing. A noncommercial
+benchmark cannot be silently converted into a redistributable or commercial
+training source.
+
+## Hard stops
+
+Generation stops when a required license file, source revision, attribution,
+permission decision, or hash is missing. Failed records remain in the source
+quarantine manifest with a reason code; they are not replaced silently.
diff --git a/docs/corpus/SPLIT_AND_ISOLATION_POLICY_2026.08.12.1.md b/docs/corpus/SPLIT_AND_ISOLATION_POLICY_2026.08.12.1.md
new file mode 100644
index 0000000..50d297f
--- /dev/null
+++ b/docs/corpus/SPLIT_AND_ISOLATION_POLICY_2026.08.12.1.md
@@ -0,0 +1,66 @@
+# Split and Isolation Policy 2026.08.12.1
+
+Status: `FROZEN_FOR_GENERATOR_SMOKE`
+
+## Role assignment
+
+Roles are assigned before rendering, corruption, model inference, or metric
+calculation. The smoke contains:
+
+| Role | Records per category | Total records | Permitted use |
+|---|---:|---:|---|
+| train | 44 | 176 | Generator and future model fitting after authorization |
+| development | 12 | 48 | Nonterminal validation and bounded selection |
+| holdout | 8 | 32 | One-shot bounded evidence after configuration freeze |
+
+The smoke creates no terminal role. A later terminal role requires a separately
+sealed seed range and one-shot protocol after all generator parameters are
+frozen.
+
+## Family-level grouping
+
+The following identifiers must each map to exactly one role:
+
+- `document_cluster_id`;
+- `template_family_id`;
+- `content_family_id`;
+- `renderer_family_id`;
+- `font_family_id` when font appearance is part of a paired design;
+- `counterfactual_pair_id`;
+- `source_family_id`;
+- generation-seed family.
+
+Counterfactual members always remain in the same role. A role-assignment file
+is produced before any image exists and is frozen by SHA256.
+
+## Overlap audits
+
+Every build runs these cross-role audits:
+
+1. payload SHA256 and normalized-pixel SHA256 equality;
+2. perceptual-image similarity under a preregistered threshold;
+3. normalized Canonical Table topology equality;
+4. normalized text-content equality and high-overlap shingles;
+5. document, source, template, renderer, font, and pair-family equality;
+6. quantized geometry-signature equality;
+7. composite near-duplicate linkage across two or more weak signals.
+
+Exact overlap must be zero. A near-duplicate candidate is quarantined until an
+English review record explains and resolves it. No unresolved cross-role link
+is permitted.
+
+## Benchmark and collaborator isolation
+
+Current OmniDocBench and Customer50 artifacts are not audit inputs because they
+are prohibited generator sources. A separate restricted environment may later
+run one-way contamination checks that emit only aggregate overlap status and
+hashes; it may not expose terminal content to generator authors.
+
+Collaborators receive only the roles and payloads necessary for their assigned
+work. Anyone optimizing a generator or model does not receive terminal labels.
+
+## Non-overwrite policy
+
+Each build uses a new CalVer path. `data-smoke-2026.08.12.1` may never be
+overwritten. Any correction creates `data-smoke-2026.08.12.2` or a later dated
+identifier with a new manifest and Evidence Card.
diff --git a/docs/corpus/SYNTHETIC_DATA_SPECIFICATION_2026.08.12.1.md b/docs/corpus/SYNTHETIC_DATA_SPECIFICATION_2026.08.12.1.md
new file mode 100644
index 0000000..120c9a6
--- /dev/null
+++ b/docs/corpus/SYNTHETIC_DATA_SPECIFICATION_2026.08.12.1.md
@@ -0,0 +1,160 @@
+# Synthetic Data Specification 2026.08.12.1
+
+Status: `FROZEN_FOR_GENERATOR_SMOKE`
+
+Dataset identifier: `data-smoke-2026.08.12.1`
+
+Schema identifier: `synthetic-table-record-2026.08.12.1`
+
+## Research question
+
+Can a shared synthetic corpus teach a table model to preserve an already
+correct prior and to correct only deterministic structural defects, without
+encoding one arbitrary sequence of split and merge actions as the answer?
+
+The first bounded test is a data-generation and validation smoke. It does not
+train a model and does not support a performance claim.
+
+## Evidence basis
+
+The design follows four observations from primary research and official
+benchmark materials:
+
+1. PubTables-1M identifies inconsistent over-segmentation as a major source of
+   table ground-truth noise and uses canonicalization to remove representational
+   ambiguity.
+2. GriTS evaluates topology, location, and content as separate matrix-level
+   properties, so a legal serialization alone is not sufficient evidence of a
+   good table.
+3. OmniDocBench exposes table attributes such as border condition, merged
+   cells, formulas, color, and rotation. These public categories define
+   phenomenon coverage, not page-level source material.
+4. Synthetic-table research reports benefits from controlling structural
+   complexity, especially spanning-cell distributions, while preserving an
+   independently sourced evaluation boundary.
+
+Primary references:
+
+- [PubTables-1M](https://arxiv.org/abs/2110.00061)
+- [GriTS](https://arxiv.org/abs/2203.12555)
+- [OmniDocBench official repository](https://github.com/opendatalab/OmniDocBench)
+- [Synthesizing Realistic Data for Table Recognition](https://arxiv.org/abs/2404.11100)
+
+## Supervision contract
+
+Every attempted record receives exactly one gate label:
+
+- `KEEP`: the Raw-like prior and Gold are semantically equivalent in topology,
+  token ownership, and valid geometry. Serialization differences do not turn a
+  record into an edit.
+- `EDIT`: the prior contains a deterministic, replayable structural difference
+  from Gold.
+- `QUARANTINE`: source rights, semantics, geometry, ownership, determinism, or
+  isolation are ambiguous or invalid.
+
+An OCR transcription error does not by itself authorize an Explicit topology
+edit. The Explicit target is an order-invariant structural difference and is
+empty for `KEEP`. The LoRA target is one complete Canonical Table state and is
+semantically equivalent to the prior for `KEEP`.
+
+## Gate and editor boundary
+
+The gate decides `KEEP` or `EDIT` before a route-specific candidate is used.
+The editor is invoked only for `EDIT`. Both routes share canonical legality,
+OCR-token preservation, geometry completeness, table-only assembly, and exact
+prior rollback checks. A rejected or uncertain candidate leaves the prior
+unchanged.
+
+The initial decision cost assigns a false edit four times the cost of a missed
+edit. This value is preregistered for the smoke and may be changed only by a
+new nonterminal single-variable experiment. Current official benchmark scores
+may not calibrate it.
+
+## Bounded smoke composition
+
+The smoke contains exactly 256 accepted records if and only if every frozen
+seed passes. There is no silent replacement of a failed seed.
+
+| Category | Label | Count | Purpose |
+|---|---|---:|---|
+| Exact KEEP | KEEP | 64 | Byte- or state-equivalent correct priors |
+| Hard KEEP | KEEP | 64 | Visually difficult but semantically correct priors |
+| Single minimal edit | EDIT | 64 | One controlled reversible topology defect |
+| Complex correction | EDIT | 64 | Multiple interacting but deterministic defects |
+
+At least 64 counterfactual pairs are required. Each pair shares authored
+content, template family, font family, renderer family, and base degradation.
+One member remains correct (`KEEP`); the other receives a frozen controlled
+structural corruption (`EDIT`). The pair must not cross data roles.
+
+The four smoke categories allocate `44/12/8` records to
+`train/development/holdout`, respectively. A terminal role is not created in
+the smoke. A later corpus may use terminal records only after the generator,
+schema, and distribution are frozen and under a separate one-shot protocol.
+
+## Prior construction
+
+Two prior families are allowed:
+
+1. `controlled_identity_or_error`: start from newly authored Canonical Gold;
+   use identity for KEEP or a deterministic corruption operator for EDIT.
+2. `approved_real_parser`: run a frozen parser on a newly authored or approved
+   nonterminal image and retain complete parser provenance. This family is
+   initially limited to KEEP-oriented evidence until its licensing and output
+   determinism are separately sealed.
+
+No current OmniDocBench or Customer50 page, crop, text, coordinate, annotation,
+embedding, identifier, or transformed derivative may be used as a source or
+retrieval query.
+
+## Record views
+
+Each accepted record exposes three synchronized views:
+
+- Gate view: prior evidence and the `KEEP` or `EDIT` target.
+- Explicit view: the minimal order-invariant topology difference; empty for
+  KEEP, with prior text frozen.
+- LoRA view: a complete Canonical Table target with topology, geometry, content,
+  and ownership.
+
+All views bind to the same image, prior-state hash, Gold-state hash, split role,
+and provenance record.
+
+## Deterministic generation
+
+The generator samples structure before rendering. Template, content, font,
+renderer, corruption, and degradation parameters are derived from the frozen
+seed namespace in
+[`generation_parameters_2026.08.12.1.json`](../../configs/generation_parameters_2026.08.12.1.json).
+
+The same inputs must reproduce identical normalized semantic records and
+normalized pixels. Encoders that cannot guarantee byte-identical image files
+must record both file SHA256 and normalized-pixel SHA256.
+
+## Split and isolation
+
+Document, template, content, renderer, and counterfactual-pair families are
+assigned to one role before rendering. The policy is defined in
+[`SPLIT_AND_ISOLATION_POLICY_2026.08.12.1.md`](SPLIT_AND_ISOLATION_POLICY_2026.08.12.1.md).
+
+Exact file, normalized pixel, perceptual image, normalized structure,
+normalized text, source, and geometry-signature audits are mandatory. Any
+unresolved cross-role overlap is a hard stop.
+
+## Rights and provenance
+
+The smoke uses newly authored synthetic content and fonts/assets with explicit
+compatible rights. Every source and font decision follows
+[`LICENSE_AND_SOURCE_POLICY_2026.08.12.1.md`](LICENSE_AND_SOURCE_POLICY_2026.08.12.1.md).
+Unknown, non-redistributable, or incompatible material is quarantined before
+generation.
+
+## Acceptance and escalation
+
+The smoke passes only when every criterion in
+[`ACCEPTANCE_CRITERIA_2026.08.12.1.md`](ACCEPTANCE_CRITERIA_2026.08.12.1.md)
+passes and the Evidence Card is sealed. A pass authorizes a new,
+non-overwriting shared-corpus build. A failure stops bulk generation and
+requires a new dated specification revision.
+
+Neither a smoke pass nor a corpus build authorizes model training.
diff --git a/docs/experiment-records/EVIDENCE_CARD_SYNTHETIC_DATA_SPECIFICATION_2026.08.12.1.md b/docs/experiment-records/EVIDENCE_CARD_SYNTHETIC_DATA_SPECIFICATION_2026.08.12.1.md
new file mode 100644
index 0000000..51053d4
--- /dev/null
+++ b/docs/experiment-records/EVIDENCE_CARD_SYNTHETIC_DATA_SPECIFICATION_2026.08.12.1.md
@@ -0,0 +1,80 @@
+# Evidence Card: Synthetic Data Specification 2026.08.12.1
+
+Status: `PASS_SEALED_FOR_BOUNDED_GENERATOR_IMPLEMENTATION`
+
+## Objective
+
+Freeze an English, CalVer-addressed specification for a shared synthetic table
+corpus before any batch generation or model training. The specification must
+make KEEP supervision, deterministic structural correction, provenance,
+license decisions, split isolation, and hard acceptance gates executable.
+
+## Authorization and boundary
+
+- Work type: documentation, schema, configuration, and preregistration.
+- Output release: `2026.08.12.1`.
+- Next bounded dataset: `data-smoke-2026.08.12.1`.
+- Data generated in this stage: `0` records.
+- Model training started: `false`.
+- Current OmniDocBench or Customer50 contents used: `false`.
+- Current official benchmark evaluation run: `false`.
+- Historical sealed artifacts modified: `false`.
+
+## Frozen decisions
+
+1. Gate labels are `KEEP`, `EDIT`, and `QUARANTINE`.
+2. Semantic equivalence is KEEP even when serialization differs.
+3. Explicit supervision is an order-invariant topology difference with prior
+   text frozen; LoRA supervision is a complete Canonical Table state.
+4. The 256-record smoke contains 64 Exact KEEP, 64 Hard KEEP, 64 Single
+   Minimal Edit, and 64 Complex Correction records.
+5. The smoke split is 176 train, 48 development, and 32 holdout records; it has
+   no terminal role.
+6. At least 64 same-role counterfactual pairs are required.
+7. False edits cost four times missed edits, and uncertainty resolves to KEEP.
+8. Failed seeds are not silently replaced.
+9. All acceptance checks must pass before bulk generation.
+10. Neither a data-smoke pass nor a corpus build authorizes model training.
+
+## Research basis
+
+- PubTables-1M motivates canonical ground truth and removal of inconsistent
+  over-segmentation.
+- GriTS motivates separate topology, location, and content views.
+- OmniDocBench official attributes motivate generic coverage categories without
+  supplying page-level training material.
+- Synthetic table-recognition research motivates explicit control of structural
+  complexity and spanning-cell distributions.
+
+## Validation performed
+
+- All JSON files parsed successfully.
+- Coverage matrix totals closed at `256/176/48/32` for
+  requested/train/development/holdout.
+- Each of the four primary categories totaled 64 records.
+- All local Markdown links resolved.
+- Repository diff passed `git diff --check`.
+- The data-free regression suite passed `18/18` tests under Python 3.12.
+- Public-tree naming audit found no project-owned legacy dataset-name,
+  baseline-number, or internal contract-version identifiers.
+- Upstream dependency and benchmark version names were preserved.
+
+## Frozen artifact hashes
+
+| Artifact | SHA256 |
+|---|---|
+| `configs/generation_parameters_2026.08.12.1.json` | `700c94b47a0f1e3e0e42c60e2eec6c33ff19c438f6afee047ffe49e80cf6d02d` |
+| `docs/corpus/SYNTHETIC_DATA_SPECIFICATION_2026.08.12.1.md` | `430a6758f22043e647bb42d1bebaa23f99702b08ccf1e92ca022e92e00054bb4` |
+| `docs/corpus/COVERAGE_MATRIX_2026.08.12.1.csv` | `833c750ddd72ec27b218ca96e3309f15d2b59f6d389e9af88d76df28e20d0795` |
+| `docs/corpus/LICENSE_AND_SOURCE_POLICY_2026.08.12.1.md` | `962840f33fdc4187ef9c1a8106b1d1efd7a00f8b12f5091db03ae2f0bf5e1dae` |
+| `docs/corpus/SPLIT_AND_ISOLATION_POLICY_2026.08.12.1.md` | `1af384360ea2726558dfb9625eebbe647e4170b7b2abb4324b55f45bda763b97` |
+| `docs/corpus/ACCEPTANCE_CRITERIA_2026.08.12.1.md` | `2a57ecc701ae1c77d9dcd8a51b70c8b4b8121cedb212c2e58d4631316cccbfae` |
+| `schemas/synthetic_table_record_2026.08.12.1.json` | `b8ae27175fe6147a8d14c380f92cbb82d13cffa4673735aaba79182c1e17fcf3` |
+| `schemas/source_license_record_2026.08.12.1.json` | `5f4194eab163e36b2fc1090e808d9baf48085317cca1a6a9c868266e96316203` |
+
+## Result
+
+The specification stage passes and authorizes implementation of the bounded
+256-record generator smoke in a new non-overwriting path. Bulk corpus
+generation remains conditional on a sealed smoke pass. Model training remains
+unauthorized.
diff --git a/docs/experiment-records/EVIDENCE_CARD_SYNTHETIC_DATA_SPECIFICATION_2026.08.12.1.sha256 b/docs/experiment-records/EVIDENCE_CARD_SYNTHETIC_DATA_SPECIFICATION_2026.08.12.1.sha256
new file mode 100644
index 0000000..18cbf32
--- /dev/null
+++ b/docs/experiment-records/EVIDENCE_CARD_SYNTHETIC_DATA_SPECIFICATION_2026.08.12.1.sha256
@@ -0,0 +1 @@
+fef7930ff15d35e7b5810e734486d44b36db0afa6a16109e32150dd4e1848ef1  EVIDENCE_CARD_SYNTHETIC_DATA_SPECIFICATION_2026.08.12.1.md
diff --git a/docs/methods/EXPLICIT_LAYOUT_TRANSFORMER.md b/docs/methods/EXPLICIT_LAYOUT_TRANSFORMER_2026.08.12.1.md
similarity index 98%
rename from docs/methods/EXPLICIT_LAYOUT_TRANSFORMER.md
rename to docs/methods/EXPLICIT_LAYOUT_TRANSFORMER_2026.08.12.1.md
index 0f34d0d..972dc64 100644
--- a/docs/methods/EXPLICIT_LAYOUT_TRANSFORMER.md
+++ b/docs/methods/EXPLICIT_LAYOUT_TRANSFORMER_2026.08.12.1.md
@@ -1,4 +1,4 @@
-# Explicit Layout Transformer
+# Explicit Layout Transformer 2026.08.12.1
 
 ## Research question
 
diff --git a/pyproject.toml b/pyproject.toml
index e61bec1..0685775 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "borderless-table-structuring-lab"
-version = "2026.8.12"
+version = "2026.8.12.1"
 description = "Research on canonical representations, explicit topology modeling, and generative adaptation for borderless table structure recognition."
 readme = "README.md"
 requires-python = ">=3.10"
diff --git a/schemas/source_license_record_2026.08.12.1.json b/schemas/source_license_record_2026.08.12.1.json
new file mode 100644
index 0000000..03768fc
--- /dev/null
+++ b/schemas/source_license_record_2026.08.12.1.json
@@ -0,0 +1,67 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "borderless-table-structuring/source-license-record/2026.08.12.1",
+  "title": "Source License Record 2026.08.12.1",
+  "type": "object",
+  "required": [
+    "schema_release",
+    "source_id",
+    "source_title",
+    "source_owner",
+    "acquisition_method",
+    "acquisition_date",
+    "source_revision",
+    "license",
+    "permissions",
+    "review",
+    "source_manifest_sha256"
+  ],
+  "properties": {
+    "schema_release": {"const": "source-license-record-2026.08.12.1"},
+    "source_id": {"type": "string", "minLength": 1},
+    "source_title": {"type": "string", "minLength": 1},
+    "source_owner": {"type": "string", "minLength": 1},
+    "acquisition_method": {"enum": ["PROJECT_AUTHORED", "DOWNLOAD", "LOCAL_REBUILD", "OTHER"]},
+    "acquisition_url": {"type": ["string", "null"]},
+    "acquisition_date": {"type": "string", "format": "date"},
+    "source_revision": {"type": "string", "minLength": 1},
+    "license": {
+      "type": "object",
+      "required": ["name", "version", "url", "text_sha256"],
+      "properties": {
+        "name": {"type": "string", "minLength": 1},
+        "version": {"type": "string", "minLength": 1},
+        "url": {"type": ["string", "null"]},
+        "text_sha256": {"type": "string", "pattern": "^[0-9a-f]{64}$"}
+      },
+      "additionalProperties": false
+    },
+    "permissions": {
+      "type": "object",
+      "required": ["redistribution", "modification", "derivatives", "research_use", "commercial_use", "attribution_required"],
+      "properties": {
+        "redistribution": {"type": "boolean"},
+        "modification": {"type": "boolean"},
+        "derivatives": {"type": "boolean"},
+        "research_use": {"type": "boolean"},
+        "commercial_use": {"type": ["boolean", "null"]},
+        "attribution_required": {"type": "boolean"}
+      },
+      "additionalProperties": false
+    },
+    "attribution_notice": {"type": ["string", "null"]},
+    "review": {
+      "type": "object",
+      "required": ["decision", "reviewer", "decision_date", "rationale"],
+      "properties": {
+        "decision": {"enum": ["APPROVED_REDISTRIBUTABLE", "APPROVED_REBUILD_ONLY", "QUARANTINED"]},
+        "reviewer": {"type": "string", "minLength": 1},
+        "decision_date": {"type": "string", "format": "date"},
+        "rationale": {"type": "string", "minLength": 1}
+      },
+      "additionalProperties": false
+    },
+    "source_manifest_sha256": {"type": "string", "pattern": "^[0-9a-f]{64}$"}
+  },
+  "additionalProperties": false
+}
diff --git a/schemas/synthetic_table_record_2026.08.12.1.json b/schemas/synthetic_table_record_2026.08.12.1.json
new file mode 100644
index 0000000..869fbbb
--- /dev/null
+++ b/schemas/synthetic_table_record_2026.08.12.1.json
@@ -0,0 +1,133 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "borderless-table-structuring/synthetic-table-record/2026.08.12.1",
+  "title": "Synthetic Table Record 2026.08.12.1",
+  "type": "object",
+  "required": [
+    "schema_release",
+    "dataset_release",
+    "sample_id",
+    "role",
+    "gate_label",
+    "category",
+    "identity",
+    "provenance",
+    "rendering",
+    "payloads",
+    "gold",
+    "prior",
+    "views",
+    "audits"
+  ],
+  "properties": {
+    "schema_release": {"const": "synthetic-table-record-2026.08.12.1"},
+    "dataset_release": {"const": "data-smoke-2026.08.12.1"},
+    "sample_id": {"type": "string", "pattern": "^data-smoke-2026\\.08\\.12\\.1-[0-9]{6}$"},
+    "role": {"enum": ["train", "development", "holdout"]},
+    "gate_label": {"enum": ["KEEP", "EDIT", "QUARANTINE"]},
+    "category": {
+      "enum": ["exact_keep", "hard_keep", "single_minimal_edit", "complex_correction"]
+    },
+    "identity": {
+      "type": "object",
+      "required": [
+        "generation_seed",
+        "document_cluster_id",
+        "source_family_id",
+        "template_family_id",
+        "content_family_id",
+        "renderer_family_id",
+        "font_family_id",
+        "counterfactual_pair_id"
+      ],
+      "properties": {
+        "generation_seed": {"type": "integer", "minimum": 0},
+        "document_cluster_id": {"type": "string", "minLength": 1},
+        "source_family_id": {"type": "string", "minLength": 1},
+        "template_family_id": {"type": "string", "minLength": 1},
+        "content_family_id": {"type": "string", "minLength": 1},
+        "renderer_family_id": {"type": "string", "minLength": 1},
+        "font_family_id": {"type": "string", "minLength": 1},
+        "counterfactual_pair_id": {"type": ["string", "null"]}
+      },
+      "additionalProperties": false
+    },
+    "provenance": {
+      "type": "object",
+      "required": [
+        "generator_release",
+        "source_id",
+        "license_decision",
+        "license_manifest_sha256",
+        "terminal_inputs_used"
+      ],
+      "properties": {
+        "generator_release": {"const": "2026.08.12.1"},
+        "source_id": {"type": "string", "minLength": 1},
+        "license_decision": {"enum": ["APPROVED_REDISTRIBUTABLE", "APPROVED_REBUILD_ONLY", "QUARANTINED"]},
+        "license_manifest_sha256": {"type": "string", "pattern": "^[0-9a-f]{64}$"},
+        "terminal_inputs_used": {"const": false}
+      },
+      "additionalProperties": true
+    },
+    "rendering": {
+      "type": "object",
+      "required": ["parameters", "font_sources", "normalized_pixel_sha256"]
+    },
+    "payloads": {
+      "type": "object",
+      "required": ["image_path", "image_sha256", "record_sha256"]
+    },
+    "gold": {"$ref": "#/$defs/canonicalTable"},
+    "prior": {"$ref": "#/$defs/canonicalTable"},
+    "views": {
+      "type": "object",
+      "required": ["gate", "explicit", "lora"],
+      "properties": {
+        "gate": {
+          "type": "object",
+          "required": ["label", "false_edit_cost", "missed_edit_cost"]
+        },
+        "explicit": {
+          "type": "object",
+          "required": ["prior_state_sha256", "order_invariant_difference", "raw_text_frozen"]
+        },
+        "lora": {
+          "type": "object",
+          "required": ["complete_canonical_target", "table_only"]
+        }
+      },
+      "additionalProperties": false
+    },
+    "audits": {
+      "type": "object",
+      "required": [
+        "schema_valid",
+        "canonical_legal",
+        "grid_complete",
+        "gold_recompiled",
+        "token_ownership_valid",
+        "geometry_valid",
+        "semantic_replay_valid",
+        "normalized_pixel_replay_valid",
+        "cross_role_overlap_clear"
+      ]
+    }
+  },
+  "$defs": {
+    "canonicalTable": {
+      "type": "object",
+      "required": ["rows", "columns", "cells", "tokens", "semantic_state_sha256", "full_state_sha256"],
+      "properties": {
+        "rows": {"type": "integer", "minimum": 1},
+        "columns": {"type": "integer", "minimum": 1},
+        "cells": {"type": "array", "minItems": 1},
+        "tokens": {"type": "array"},
+        "semantic_state_sha256": {"type": "string", "pattern": "^[0-9a-f]{64}$"},
+        "full_state_sha256": {"type": "string", "pattern": "^[0-9a-f]{64}$"}
+      },
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": false
+}
diff --git a/src/borderless_table_structuring/__init__.py b/src/borderless_table_structuring/__init__.py
index 3e9c8b3..c756aeb 100644
--- a/src/borderless_table_structuring/__init__.py
+++ b/src/borderless_table_structuring/__init__.py
@@ -1,5 +1,5 @@
 """Research primitives for borderless table structure recognition."""
 
-__release__ = "2026.08.12"
+__release__ = "2026.08.12.1"
 
 __all__ = ["__release__"]