Keep materialization responses machine-readable

Author: chubes4

packages/runtime-playground/src/mount-materialization.ts

@@ -488,7 +488,7 @@ foreach (($payload['directories'] ?? array()) as $directory) {
         $skipped++;
         continue;
     }
-    if (is_dir($directory) || mkdir($directory, 0777, true) || is_dir($directory)) {
+    if (is_dir($directory) || @mkdir($directory, 0777, true) || is_dir($directory)) {
         $created++;
         continue;
     }
@@ -502,12 +502,12 @@ foreach (($payload['files'] ?? array()) as $file) {
         continue;
     }
     $directory = dirname($target);
-    if (!is_dir($directory) && !mkdir($directory, 0777, true) && !is_dir($directory)) {
+    if (!is_dir($directory) && !@mkdir($directory, 0777, true) && !is_dir($directory)) {
         $skipped++;
         continue;
     }
     $decoded = base64_decode($contents, true);
-    if (false === $decoded || false === file_put_contents($target, $decoded)) {
+    if (false === $decoded || false === @file_put_contents($target, $decoded)) {
         $skipped++;
         continue;
     }
@@ -532,7 +532,7 @@ foreach (($payload['directories'] ?? array()) as $directory) {
         $skipped++;
         continue;
     }
-    if (is_dir($directory) || mkdir($directory, 0777, true) || is_dir($directory)) {
+    if (is_dir($directory) || @mkdir($directory, 0777, true) || is_dir($directory)) {
         $created++;
         continue;
     }

tests/staged-input-materialization.test.ts

@@ -113,6 +113,8 @@ await withTempDir("wp-codebox-staged-input-materialization-binary-", async (root
   assert.equal(result.skipped, 0)
   assert.equal(directWrites, 0, "arbitrary bytes bypass the UTF-8-only direct writer")
   assert.ok(binaryWriteCode.includes(contents.toString("base64")), "the PHP materializer receives the exact base64 payload")
+  assert.match(binaryWriteCode, /@mkdir\(/, "expected filesystem failures do not corrupt the JSON response channel")
+  assert.match(binaryWriteCode, /@file_put_contents\(/, "expected write failures remain structured skipped results")
 })
 
 await withTempDir("wp-codebox-staged-input-materialization-invalid-response-", async (root) => {