fix(install): handle nested skills/ subdirectory (e.g. dev-test)

resolve_skills_src() detects when SKILL.md is one level deeper than skills/
and uses that subdirectory as rsync source instead.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

install-skills.sh

@@ -116,6 +116,25 @@ read_field() {
   python3 -c "import json,sys; d=json.load(open('$1')); print(d.get('$2',''))" 2>/dev/null || true
 }
 
+# Resolve the actual source directory to rsync from.
+# If skills/ has SKILL.md at the top level, use it directly.
+# If skills/ has a single subdirectory (e.g. skills/dev-test/SKILL.md), use that subdirectory.
+resolve_skills_src() {
+  local skills_dir="$1"
+  if [[ -f "$skills_dir/SKILL.md" ]]; then
+    echo "$skills_dir"
+    return
+  fi
+  # Find the first subdirectory that contains SKILL.md
+  local sub
+  sub="$(find "$skills_dir" -maxdepth 2 -name 'SKILL.md' | head -1)"
+  if [[ -n "$sub" ]]; then
+    echo "$(dirname "$sub")"
+    return
+  fi
+  echo "$skills_dir"
+}
+
 # ── Conflict detection (has local been modified since we installed it?) ────────
 has_local_modification() {
   # Returns 0 (true) if local target differs from repo source, 1 if identical or new
@@ -193,12 +212,17 @@ install_plugin() {
     fi
   fi
 
+  # Resolve actual source (handles plugins where content sits one level deeper,
+  # e.g. skills/dev-test/SKILL.md instead of skills/SKILL.md)
+  local src_dir
+  src_dir="$(resolve_skills_src "$skills_dir")"
+
   # Perform install
   if [[ "$install_type" == "command" ]]; then
     # Single-file command → ~/.claude/commands/<name>.md
-    local src_md="$skills_dir/SKILL.md"
+    local src_md="$src_dir/SKILL.md"
     if [[ ! -f "$src_md" ]]; then
-      warn "$install_name: skills/SKILL.md not found, skipping"
+      warn "$install_name: SKILL.md not found, skipping"
       return
     fi
 
@@ -219,8 +243,8 @@ install_plugin() {
       dry "$install_name → $dst_dir/"
     else
       mkdir -p "$dst_dir"
-      # rsync: copy entire skills/ directory content preserving structure
+      # rsync resolved source (handles nested skills/ structures)
-      rsync -a --delete "$skills_dir/" "$dst_dir/"
+      rsync -a --delete "$src_dir/" "$dst_dir/"
       state_set "$install_name" "$version" "$install_type"
       ok "$install_name → skill (v$version)"
     fi