chore: update social post state [skip ci]

github-actions[bot] · github-actions[bot] · commit 287a383526f9 · 2026-05-21T16:35:54.000Z
diff --git a/social/state.yaml b/social/state.yaml
@@ -1,4 +1,4 @@
-currentIndex: 8
-lastPostedKey: io/writing-files
-lastTweetId: 2056415629654315387
-lastPostedAt: 2026-05-18T16:44:27.259219541Z
+currentIndex: 9
+lastPostedKey: language/pattern-matching-instanceof
+lastTweetId: 2057500642990604716
+lastPostedAt: 2026-05-21T16:35:54.622494396Z
