feat(ce-setup): check for ast-grep CLI and agent skill (#653)

plugins/compound-engineering/skills/ce-setup/scripts/check-health

@@ -18,6 +18,17 @@ deps=(
   "vhs|recommended|NONINTERACTIVE=1 HOMEBREW_NO_AUTO_UPDATE=1 brew install -q vhs|https://github.com/charmbracelet/vhs"
   "silicon|recommended|NONINTERACTIVE=1 HOMEBREW_NO_AUTO_UPDATE=1 brew install -q silicon|https://github.com/Aloxaf/silicon"
   "ffmpeg|recommended|NONINTERACTIVE=1 HOMEBREW_NO_AUTO_UPDATE=1 brew install -q ffmpeg|https://ffmpeg.org/download.html"
+  "ast-grep|recommended|NONINTERACTIVE=1 HOMEBREW_NO_AUTO_UPDATE=1 brew install -q ast-grep|https://ast-grep.github.io"
+)
+
+# Agent skills installed via the `skills` CLI (vercel-labs/skills).
+# Format: name|tier|install_cmd|url
+# Presence is resolved authoritatively via `npx --yes skills list --global --json`
+# when npx and jq are available; otherwise falls back to a Claude Code path
+# probe at ~/.claude/skills/<name>.
+
+skills=(
+  "ast-grep|recommended|npx skills add ast-grep/agent-skill -g -y|https://github.com/ast-grep/agent-skill"
 )
 
 # =====================================================
@@ -65,6 +76,44 @@ for entry in "${deps[@]}"; do
   fi
 done
 
+# =====================================================
+#  Check skills
+# =====================================================
+
+has_npx="no"
+has_jq="no"
+command -v npx >/dev/null 2>&1 && has_npx="yes"
+command -v jq >/dev/null 2>&1 && has_jq="yes"
+
+installed_skill_names=""
+if [ "$has_npx" = "yes" ] && [ "$has_jq" = "yes" ]; then
+  installed_skill_names=$(npx --yes skills list --global --json 2>/dev/null | jq -r '.[].name' 2>/dev/null)
+fi
+
+skill_ok=0; skill_total=0
+skill_results=()
+skills_root="$HOME/.claude/skills"
+for entry in "${skills[@]}"; do
+  IFS='|' read -r name tier install_cmd url <<< "$entry"
+  skill_total=$((skill_total + 1))
+
+  is_installed="no"
+  if [ -n "$installed_skill_names" ]; then
+    if printf '%s\n' "$installed_skill_names" | grep -qx "$name"; then
+      is_installed="yes"
+    fi
+  elif [ -e "$skills_root/$name" ]; then
+    is_installed="yes"
+  fi
+
+  if [ "$is_installed" = "yes" ]; then
+    skill_ok=$((skill_ok + 1))
+    skill_results+=("$name|$tier|ok|$install_cmd|$url")
+  else
+    skill_results+=("$name|$tier|missing|$install_cmd|$url")
+  fi
+done
+
 # =====================================================
 #  Project checks (repo only)
 # =====================================================
@@ -129,6 +178,24 @@ for result in "${results[@]}"; do
   fi
 done
 
+# --- Skills ---
+
+if [ "${#skills[@]}" -gt 0 ]; then
+  section "Skills  ${skill_ok}/${skill_total}"
+
+  for result in "${skill_results[@]}"; do
+    IFS='|' read -r name tier status install_cmd url <<< "$result"
+    if [ "$status" = "ok" ]; then
+      ok "$name"
+    else
+      warn "$name"
+      issues=$((issues + 1))
+      detail "$install_cmd"
+      detail "$url"
+    fi
+  done
+fi
+
 # --- Project ---
 
 if [ "$in_repo" = "yes" ]; then
@@ -171,9 +238,9 @@ fi
 
 echo ""
 if [ "$issues" -eq 0 ]; then
-  echo " ✅  All clear  ${cli_ok}/${cli_total} tools"
+  echo " ✅  All clear  ${cli_ok}/${cli_total} tools  ${skill_ok}/${skill_total} skills"
 else
-  echo " ⚠️   ${issues} issue(s) found  ${cli_ok}/${cli_total} tools"
+  echo " ⚠️   ${issues} issue(s) found  ${cli_ok}/${cli_total} tools  ${skill_ok}/${skill_total} skills"
 fi
 
 echo ""