CJK-MOJI4: implement public preset boundary policies and punctuation classes

docs/mojikumi.md

@@ -0,0 +1,33 @@
+# Mojikumi implementation and public references
+
+This is a clean-room implementation of public spacing behavior. Mojikumi is an
+Adobe feature, not a single conformance standard. W3C JLReq and CLReq describe
+Japanese and Chinese layout requirements; they do not specify Adobe's private
+composer or its complete preset pair matrices.
+
+References:
+
+- [Adobe preset enumeration](https://developer.adobe.com/indesign/uxp/dom/api/m/mojikumi-table-defaults/)
+- [Adobe Mojikumi guide, sections 3–5](https://wwwimages.adobe.com/www.adobe.com/jp/joc/design/guides/pdf/mojikumi.pdf)
+- [Adobe spacing priorities](https://helpx.adobe.com/indesign/desktop/language-and-proofing/chinese-japanese-and-korean/set-spacing-priorities-in-mojikumi-character-classes.html)
+- [W3C JLReq](https://www.w3.org/TR/jlreq/), especially character classes and line adjustment
+- [W3C CLReq](https://www.w3.org/TR/clreq/), especially regional punctuation placement
+
+## Presets and interchange
+
+The resolver recognizes the 14 Japanese presets and two Chinese presets from the
+public enumeration, including their IDML resource aliases. Paragraph indentation,
+opening-bracket indentation, ordinary line starts, full/half/discrete line ends,
+and period-only line-end policies are represented separately. Custom IDML rows
+replace the corresponding directional pair. Adjacent opening and closing marks
+must not regain two full blank half-bodies.
+
+Regression tests cover preset boundary differences, custom override precedence,
+IDML reference round trips, and unsupported names. The implementation must not be
+represented as a byte-for-byte reproduction of Adobe's full preset matrices.
+
+## Audit work
+
+Further audit areas are regional punctuation metrics, shaped cluster boundaries,
+equal-priority allocation, discrete line fitting, input validation, and diagnostics
+for compatibility modes whose glyph classification cannot yet be reproduced.