feat: initial agent-builder plugin (v0.1.0)

Build complete autonomous agent systems with Claude Code.
7-phase guided workflow: map work, CLAUDE.md, agent team,
pipeline, security, deployment, test.

Components:
- commands/build.md: main guided workflow
- agents/builder.md: scaffolding agent
- skills/agent-system-design: architecture knowledge + 4 references
- scripts/templates: hooks, automation, launchd, systemd

Covers 22 OpenClaw capabilities across 4 deployment targets
(local, Mac Mini, VPS, Managed Agents).

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

scripts/templates/systemd-service.unit

@@ -0,0 +1,40 @@
+[Unit]
+Description=Claude Code Agent Pipeline
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=oneshot
+# CUSTOMIZE: User that runs the agent
+User=deploy
+# CUSTOMIZE: Working directory (your project root)
+WorkingDirectory=/home/deploy/my-agent-project
+# CUSTOMIZE: Path to your automation script
+ExecStart=/bin/bash /home/deploy/my-agent-project/automation/run-pipeline.sh
+# Environment variables (API keys etc.)
+EnvironmentFile=/home/deploy/.env
+# Timeout for the pipeline run
+TimeoutStartSec=600
+
+[Install]
+WantedBy=multi-user.target
+
+# SETUP:
+# 1. Copy to /etc/systemd/system/claude-agent.service
+# 2. Customize User, WorkingDirectory, ExecStart, EnvironmentFile
+# 3. Enable: sudo systemctl enable claude-agent
+#
+# For recurring runs, create a timer:
+# /etc/systemd/system/claude-agent.timer
+#
+# [Unit]
+# Description=Run Claude agent pipeline daily
+#
+# [Timer]
+# OnCalendar=*-*-* 07:00:00
+# Persistent=true
+#
+# [Install]
+# WantedBy=timers.target
+#
+# Then: sudo systemctl enable --now claude-agent.timer