feat: handle email encryption via x25519 asymmetric keys#2248

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Carbonhell wants to merge 3 commits intorust-lang:mainfrom

Carbonhell:feature/asymmetric-encryption-emails

Commits on Feb 11, 2026

feat(email): handle encryption via x25519 asymmetric keys
Carbonhell
committed

Commits on Feb 14, 2026

fix: use specific KDF from blake3 docs instead of handmade one
Carbonhell
committed

Commits on Feb 25, 2026

tweak(email): update public key and existing encrypted emails (removing rust foundation ones as per the review)
Carbonhell
committed