feat: Ternary-everywhere refactor + STE shadow weight infrastructure#59

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feat/ternary-everywhere

Apr 22, 2026

Commits on Apr 22, 2026

feat: ternary-everywhere refactor — all base weights stored as {-1,0,+1}
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feat: STE shadow weight infrastructure with BF16 support
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docs: research papers on STE, quality ceiling, expert count tradeoff
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