post: mark queued item as posted [automated]

Author: github-actions[bot]

scripts/content-queue.json

@@ -168,10 +168,10 @@
       "id": 19,
       "text": "Correctness is not optional in trust infrastructure. The safety verifier, the identity system, and the knowledge engine cannot afford undefined behavior.",
       "category": "thesis",
-      "status": "pending",
+      "status": "posted",
       "scheduled": "2026-04-16",
-      "posted_at": null,
-      "tweet_id": null
+      "posted_at": "2026-04-17T14:50:46.856Z",
+      "tweet_id": "2045152999102931372"
     },
     {
       "id": 20,