feat(content): promote Duncarrow; build client/server artifacts

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HuHRPE7VfppUJEaoGBEUqZ

content/server/topics/harn-daughter-left.json

@@ -0,0 +1,5 @@
+{
+  "body": "Harn's daughter left Duncarrow two winters ago with a wool trader's caravan and does not write. It shames and grieves him. Spoils nothing; guarded purely because it is his.",
+  "id": "fact.harn-daughter-left",
+  "secrecy": 1
+}