Enhance link-skills.sh to check for symlink conflicts and provide user guidance

scripts/link-skills.sh

@@ -6,6 +6,21 @@ set -euo pipefail
 
 REPO="$(cd "$(dirname "$0")/.." && pwd)"
 DEST="$HOME/.claude/skills"
+
+# If ~/.claude/skills is a symlink that resolves into this repo, we'd end up
+# writing the per-skill symlinks back into the repo's own skills/ tree. Detect
+# and bail out instead of polluting the working copy.
+if [ -L "$DEST" ]; then
+  resolved="$(readlink -f "$DEST")"
+  case "$resolved" in
+    "$REPO"|"$REPO"/*)
+      echo "error: $DEST is a symlink into this repo ($resolved)." >&2
+      echo "Remove it (rm \"$DEST\") and re-run; the script will recreate it as a real dir." >&2
+      exit 1
+      ;;
+  esac
+fi
+
 mkdir -p "$DEST"
 
 find "$REPO/skills" -name SKILL.md -not -path '*/node_modules/*' -print0 |