perf: skip apt-get if tools already installed

register-skill/action.yaml

@@ -23,8 +23,16 @@ runs:
       shell: bash
       run: |
         set -e
-        apt-get update -qq
-        apt-get install -y -qq jq curl ca-certificates python3
+        MISSING=""
+        command -v jq     >/dev/null 2>&1 || MISSING="$MISSING jq"
+        command -v curl   >/dev/null 2>&1 || MISSING="$MISSING curl"
+        command -v python3 >/dev/null 2>&1 || MISSING="$MISSING python3"
+        if [ -n "$MISSING" ]; then
+          apt-get update -qq
+          apt-get install -y -qq $MISSING ca-certificates
+        else
+          echo "All dependencies already available, skipping install"
+        fi
 
     - name: Load skill doc
       shell: bash