chore: import upstream snapshot with attribution

apps/sim/sandbox-tasks/registry.ts

@@ -0,0 +1,25 @@
+import type { SandboxTask } from '@/lib/execution/sandbox/types'
+import { docxGenerateTask } from '@/sandbox-tasks/docx-generate'
+import { pdfGenerateTask } from '@/sandbox-tasks/pdf-generate'
+import { pptxGenerateTask } from '@/sandbox-tasks/pptx-generate'
+
+/**
+ * Every piece of user code that runs inside the isolated-vm sandbox is defined
+ * here. Adding a new sandbox task = add one file under `apps/sim/sandbox-tasks/`
+ * and register it below. Mirrors the `apps/sim/background/` pattern.
+ */
+export const SANDBOX_TASKS = {
+  'pptx-generate': pptxGenerateTask,
+  'docx-generate': docxGenerateTask,
+  'pdf-generate': pdfGenerateTask,
+} as const satisfies Record<string, SandboxTask>
+
+export type SandboxTaskId = keyof typeof SANDBOX_TASKS
+
+export function getSandboxTask(id: SandboxTaskId): SandboxTask {
+  const task = SANDBOX_TASKS[id]
+  if (!task) {
+    throw new Error(`Unknown sandbox task: "${id}"`)
+  }
+  return task
+}