Deduplicate crypto libraries, saving ~49KB flash#1632

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ViezeVingertjes wants to merge 3 commits intomeshcore-dev:devfrom

ViezeVingertjes:reduce-crypto-duplication

Commits on Feb 8, 2026

Commits on Feb 9, 2026

Replace assert-based reentrancy guard with atomic spinlock in ed25519_verify to ensure thread safety during concurrent calls.
ViezeVingertjes
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