Makes the repo fully bilingual: every _en.md now has a matching _zh.md
sibling with identical section structure.
New translations:
- primers/technical_newsvendor_zh.md
- primers/technical_scuc_sced_zh.md
- primers/technical_stochastic_optimization_zh.md
- markets/us/field_guide_zh.md
- markets/us/forecasting_open_ecosystem_zh.md
README: link the new _zh docs and drop the "EN only" / awaiting-translation
markers. Translations follow house conventions (CJK bold padding, arabic
section-number parity, shared bilingual glossary, _zh cross-doc links).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
- pjm/: market primer (new, written for Chinese readers), product design
(Models A-C, newsvendor, BORD, glossary), US vendor due diligence
- china/: market & vendor DD (Doc 136/394, MLT-spot deep dive, six vendors,
glossary), product design (Model D MLT position optimizer with math)
- All documents in matched EN/ZH pairs; README with document map and
conventions (incl. CJK bold-spacing rule)
