fix(install): empty the skills directories instead of replacing them

install.sh removed ~/.claude/skills and ~/.agents/skills and created them anew. The Agent Orchestrator bind-mounts ~/.claude/skills, and a new inode left that mount showing the deleted directory, so the hub's radio send failed with radio.py not found after every make install. The installer now keeps each directory and deletes its contents before copying.

🎯 Fix: 93 %
💥 Break: 3 %
💸 Cost: 100 %
⏱️ Time: 100 %
🛡️ Security: 100 %
🏆 Score: 90
🚦 Gate: ✅ 90/5, cost and time <= 100, security 100 %

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/install.sh

@@ -40,8 +40,8 @@ fi
 
 for dst in "${TARGET}/.agents/skills" "${TARGET}/.claude/skills"; do
 	log "skills: copying -> ${dst}"
-	rm -rf "${dst}"
 	mkdir -p "${dst}"
+	find "${dst}" -mindepth 1 -delete
 	cp -a "${src}/." "${dst}/"
 done