Applies the glossary across apsis-math, apsis-time, apsis-leap,
apsis-coord, apsis-geodesy and the five orbit crates that were already
implemented, plus apsis-ephemeris, apsis-maneuver and apsis-orbit. Five
hundred and seven comment blocks now carry the English paragraph and the
Chinese one.
The checker learned to skip a comment that is only a formula, since a bare
symbol has no prose to translate and repeating it in Chinese would be noise.
The SGP4 cross-check still passes, so nothing in the numerical path moved.
All 180 comment blocks across apsis-core, apsis-units and apsis-math now
carry both languages. The checker confirms no mangled bytes and no English
word left inside a Chinese sentence, two mistakes that occurred while
writing them and are now caught mechanically.
apsis-units and apsis-core are done, 86 of 180 comment blocks in the
layer. The checker in scripts/check-bilingual.py reports which blocks still
lack Chinese, and also catches the two mistakes that are easy to make while
adding a language: a mangled byte sequence, and an English word left inside
a Chinese sentence, which is what happened once in quantity.rs and is now
caught mechanically.
Translations keep terms that have a standard Chinese name in Chinese and
leave proper nouns, abbreviations and method names in English, as the
glossary sets out. The English text is never reworded.
README stated that a crate may only depend on layers to its left, but
nothing checked it, and the wording was self contradicting: the example
given for a cross layer jump was a reverse dependency. Clarify the rule,
add scripts/check-layers.sh to enforce it, run it in CI, and record the
boundary cases in docs/design/layers.md.