# CM93 Importer 冻结基线 v1

日期：2026-09-02  
仓库：CM95  
基线 commit：`9d56592cadf7e047fb059e5a8746188595a08b43`  
基线 tag：`cm93-mysql-importer-baseline-v1`

## 结论

CM93JAPAN Dataset ID=1 的 CM93 → MySQL importer 已完成：

- Geometry normalization 全量验收；
- 非 Geometry 数据完整性全量验收；
- 原始 CM93 source file SHA-256 对账。

结果：

```text
Geometry Audit:     OVERALL: PASS
Non-Geometry Audit: OVERALL: PASS
```

## 数据基线

| 项目 | 数量 / 结果 |
|---|---:|
| Cells | 784 |
| Features | 322465 |
| Attributes | 405153 |
| Soundings | 275700 |
| Coverages | 1156 |
| Area | 81080 |
| Area valid | 81080 |
| Coverage valid | 1156 |
| Feature repaired | 55 |
| Coverage repaired | 3 |
| Feature geometry issues | 0 |
| Coverage geometry issues | 0 |
| raw_geotype=16 | 4406 |
| raw_geotype=16 issues | 0 |
| Area bbox mismatch | 0 |
| Source files checked | 784 |
| Source files missing | 0 |
| Source size mismatch | 0 |
| Source SHA-256 mismatch | 0 |

## 冻结 Geometry 规则

Valid Area / Coverage：

```text
PASS-THROUGH
```

Invalid Area / Coverage：

```text
boundary noding
→ polygonize_full
→ odd-even face selection
→ union selected faces
→ GEOS normalize
→ valid Polygon / MultiPolygon
```

禁止生产写回策略：

```text
make_valid()
ST_MakeValid()
buffer(0)
```

`raw_geotype=16` 是正常 parent/no-geometry，不属于 geometry issue。

normalized Area 的 bbox 必须来自最终 geometry.bounds。

## Raw source

必须保留：

```text
raw_feature_blob
raw_attribute_blob
chart_raw_record
source_record_index
```

## 长期回归入口

```text
tools/cm93_mysql_final_geometry_audit.py
tools/cm93_mysql_non_geometry_final_audit.py
```

## 核心生产文件

```text
src/cm93db/geometry.py
src/cm93db/importer.py
sql/001_schema_mysql57.sql
```

本次文档收尾不修改上述生产逻辑。

## PBF

```text
OUT OF SCOPE / FROZEN
```

PBF 必须作为独立后续阶段明确启动。