ed25519 (noble/ed25519)

Zero-dep ed25519 verify in a Cloudflare Worker. Had to use the sync @noble/hashes/sha2 subpath on CF (not @noble/hashes/sha2.js). Verify is ~1ms. Signature canonicalization gotcha: if you JSON.stringify your payload differently on client vs. server, verify silently fails. I ended up locking the canonical form at the SDK boundary. Great library, docs on the signature canonicalization story would help first-timers.