fix(build): correct spawn result access in build orchestration scripts

Fix incorrect spawn result property access in build and validation scripts.
Changed result.status to result.code throughout.

Files fixed:
- scripts/build-all-binaries.mjs
- scripts/build-all-from-source.mjs
- scripts/pre-publish-validate.mjs

These scripts orchestrate multi-platform builds and package validation.
Using undefined result.status caused incorrect error detection and exit codes.

Author: jdalton

scripts/build-all-binaries.mjs

@@ -78,8 +78,8 @@ async function exec(command, args, options = {}) {
     ...options,
   })
 
-  if (result.status !== 0) {
-    throw new Error(`Command failed with exit code ${result.status}`)
+  if (result.code !== 0) {
+    throw new Error(`Command failed with exit code ${result.code}`)
   }
 
   return result

scripts/build-all-from-source.mjs

@@ -102,8 +102,8 @@ async function buildPackage(pkg) {
       stdio: 'inherit',
     })
 
-    if (result.status !== 0) {
-      throw new Error(`Build failed with exit code ${result.status}`)
+    if (result.code !== 0) {
+      throw new Error(`Build failed with exit code ${result.code}`)
     }
 
     const duration = Math.round((Date.now() - startTime) / 1000)

scripts/pre-publish-validate.mjs

@@ -295,7 +295,7 @@ async function checkGitStatus() {
       cwd: projectRoot,
     })
 
-    if (result.status !== 0) {
+    if (result.code !== 0) {
       warnings.push('Unable to check git status')
       return { errors, warnings }
     }
@@ -336,7 +336,7 @@ async function validateGitTag() {
       cwd: projectRoot,
     })
 
-    if (result.status !== 0) {
+    if (result.code !== 0) {
       warnings.push('Unable to check git tags')
       return { errors, warnings }
     }