Integrate matrixbot into existing LXC 151 deploy hook

Removed standalone matrixbot/deploy.sh — deploy is handled by the existing
webhook system. Added matrixbot/ block to deploy/lxc151-hookshot.sh: on push,
if any matrixbot/ file changed, source files are synced to /opt/matrixbot and
matrixbot.service is restarted automatically.

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

matrixbot/deploy.sh

@@ -1,23 +0,0 @@
-#!/bin/bash
-# Deploy script for matrixbot on LXC 151
-# Run as root on LXC 151: bash /opt/matrixbot/deploy.sh
-set -e
-
-REPO_DIR="$(cd "$(dirname "$0")" && pwd)"
-BOT_DIR="/opt/matrixbot"
-SERVICE="matrixbot"
-
-echo "[deploy] Pulling latest from git..."
-cd "$REPO_DIR"
-git pull
-
-echo "[deploy] Syncing source files to $BOT_DIR..."
-FILES="bot.py callbacks.py commands.py config.py utils.py welcome.py wordle.py wordlist_answers.py wordlist_valid.py requirements.txt"
-for f in $FILES; do
-  cp "$REPO_DIR/$f" "$BOT_DIR/$f"
-done
-
-echo "[deploy] Restarting $SERVICE..."
-systemctl restart "$SERVICE"
-sleep 2
-systemctl is-active "$SERVICE" && echo "[deploy] Done — $SERVICE is running." || echo "[deploy] ERROR — $SERVICE failed to start."