AppDetailFragment: Fix file paths.

app/src/main/java/de/ccc/events/badge/card10/hatchery/AppDetailFragment.kt

@@ -117,7 +117,7 @@ class AppDetailFragment : Fragment() {
                     targetFile.createNewFile()
                     Log.d(TAG, "Extracting ${entry.name} to ${targetFile.absolutePath}")
                     tarStream.copyTo(targetFile.outputStream())
-                    appFiles.add(TransferJob(targetFile.toUri(), "apps/${entry.name}"))
+                    appFiles.add(TransferJob(targetFile.toUri(), "/apps/${entry.name}"))
                 }
 
                 val launcher = createLauncher(app.slug, cacheDir)
@@ -157,12 +157,12 @@ class AppDetailFragment : Fragment() {
             val src = """
                 # Launcher script for $slug
                 import os
-                os.exec("apps/$slug/__init__.py")
+                os.exec("/apps/$slug/__init__.py")
             """.trimIndent()
 
             file.writeText(src)
 
-            return TransferJob(file.toUri(), fileName)
+            return TransferJob(file.toUri(), "/$fileName")
         }
     }
 }