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/elves-avoid-the-shrine.json

@@ -0,0 +1,5 @@
+{
+  "body": "Elves don't stop at the White Antlers anymore. Have not, for a couple of years. Anyone observant notices; most townsfolk assume the elves simply moved on or the road changed.",
+  "id": "rumor.elves-avoid-the-shrine",
+  "secrecy": 1
+}