scripts(agenthub): Add one-liner deploy script

Simplest deployment option - single command execution.
Usage: ./scripts/deploy-oneliner.sh

Deploys J5 code to 192.168.9.23 via SSH.

Related to BARAAA-50.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

scripts/deploy-oneliner.sh

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+#!/bin/bash
+# Déploiement J5 en une ligne
+# Usage: ./deploy-oneliner.sh
+
+echo "🚀 Déploiement J5 sur 192.168.9.23..."
+
+ssh alexandre@192.168.9.23 << 'ENDSSH'
+cd /opt/agenthub
+echo "▶ Git pull..."
+git pull origin master
+echo "▶ Docker build..."
+sudo docker compose -f compose.lan-direct.yml build --no-cache app
+echo "▶ Docker restart..."
+sudo docker compose -f compose.lan-direct.yml up -d
+sleep 3
+echo "▶ Health check..."
+curl -f http://localhost:3000/healthz && echo "" || echo "⚠️ Health check failed"
+echo "✓ Déploiement terminé!"
+ENDSSH
+
+echo ""
+echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
+echo "✅ Déployé!"
+echo ""
+echo "Pour valider:"
+echo "  cd agenthub"
+echo "  node test/j5-messaging-validation.js 192.168.9.23:3000"