fix(wasm): correct spawn result property access in WASM build scripts

Fix incorrect spawn result access in WASM-related build scripts.
Changed result.status to result.code to match @socketsecurity/lib/spawn API.

Files fixed:
- scripts/wasm/build-unified-wasm.mjs
- scripts/wasm/check-rust-toolchain.mjs
- scripts/wasm/optimize-embedded-wasm.mjs
- scripts/wasm/benchmark-build.mjs
- scripts/wasm/convert-codet5.mjs

The spawn function returns {code, stdout?, stderr?}, not {status, ...}.
Using result.status evaluates to undefined, causing incorrect error handling.

Author: jdalton

scripts/wasm/benchmark-build.mjs

@@ -65,8 +65,8 @@ async function benchmarkBuild(mode) {
       stdioString: true,
     })
 
-    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 ${result.code}`)
     }
   } catch (e) {
     logger.error(`${mode} build failed:`, e.message)

scripts/wasm/build-unified-wasm.mjs

@@ -57,7 +57,7 @@ async function exec(command, args, options = {}) {
   })
 
   return {
-    code: result.status ?? 0,
+    code: result.code ?? 0,
     stderr: result.stderr ?? '',
     stdout: result.stdout ?? '',
   }

scripts/wasm/check-rust-toolchain.mjs

@@ -30,7 +30,7 @@ async function exec(command, args, options = {}) {
   })
 
   return {
-    code: result.status ?? 0,
+    code: result.code ?? 0,
     stderr: result.stderr ?? '',
     stdout: result.stdout ?? '',
   }

scripts/wasm/convert-codet5.mjs

@@ -42,12 +42,12 @@ async function exec(command, args, options = {}) {
     ...options,
   })
 
-  if (result.status !== 0) {
-    throw new Error(`Command failed with code ${result.status}`)
+  if (result.code !== 0) {
+    throw new Error(`Command failed with code ${result.code}`)
   }
 
   return {
-    code: result.status ?? 0,
+    code: result.code ?? 0,
     stderr: result.stderr ?? '',
     stdout: result.stdout ?? '',
   }

scripts/wasm/optimize-embedded-wasm.mjs

@@ -37,7 +37,7 @@ async function exec(command, args, options = {}) {
   })
 
   return {
-    code: result.status ?? 0,
+    code: result.code ?? 0,
     stderr: result.stderr ?? '',
     stdout: result.stdout ?? '',
   }