fix: decouple puzzle draft generation lifecycle

src/components/platform-entry/puzzleDraftGenerationState.ts

@@ -0,0 +1,20 @@
+import type { PuzzleAgentSessionSnapshot } from '../../../packages/shared/src/contracts/puzzleAgentSession';
+
+function hasText(value: string | null | undefined) {
+  return typeof value === 'string' && value.trim().length > 0;
+}
+
+export function isPuzzleCompileActionReady(
+  session: PuzzleAgentSessionSnapshot,
+) {
+  const draft = session.draft;
+  if (!draft) {
+    return false;
+  }
+  if (hasText(draft.coverImageSrc)) {
+    return true;
+  }
+  return (
+    draft.levels?.some((level) => hasText(level.coverImageSrc)) === true
+  );
+}