Fix PhotoCraft snippet preload path

image/download.py

@@ -32,3 +32,12 @@ with tempfile.TemporaryDirectory() as tmp:
             shutil.copytree(source, destination)
         else:
             shutil.copy2(source, destination)
+    # The upstream web bundle preloads this module with a relative URL from
+    # /app/photocraft-web.js, which incorrectly resolves under /app/snippets.
+    for script in target.rglob("*.js"):
+        contents = script.read_text()
+        fixed = contents.replace(
+            '"./snippets/', '"/snippets/'
+        )
+        if fixed != contents:
+            script.write_text(fixed)