TextEncoder Fix

packages/bare-os-booter/lib/bare-os-audit-chain.js

@@ -2,9 +2,9 @@
  * Tamper-evident in-session audit chain (hash-linked NDJSON rows; no persistence unless host appends).
  */
 import bareCrypto from 'bare-crypto'
+import b4a from 'b4a'
 
 const { createHash } = bareCrypto
-const textEncoder = new TextEncoder()
 let nodeCreateHash = null
 try {
   const nodeCrypto = await import('crypto')
@@ -25,13 +25,6 @@ function hexU8(u8) {
   return s
 }
 
-/**
- * @param {string} s
- */
-function utf8(s) {
-  return textEncoder.encode(String(s))
-}
-
 /**
  * @param {string | null} prev
  * @param {string} payload
@@ -47,9 +40,9 @@ function sha256LinkDigest(prev, payload) {
     return d instanceof Uint8Array ? d : new Uint8Array(d)
   }
   const h = createHash('sha256')
-  if (prev) h.update(utf8(prev))
-  h.update(utf8('\n'))
-  h.update(utf8(payload))
+  if (prev) h.update(b4a.from(String(prev), 'utf8'))
+  h.update(b4a.from('\n', 'utf8'))
+  h.update(b4a.from(String(payload), 'utf8'))
   const digest = h.digest()
   return digest instanceof Uint8Array ? digest : new Uint8Array(digest)
 }