Add matrixbot source to repo

All bot source files from LXC 151 (/opt/matrixbot) are now tracked here.
Secrets (.env, credentials.json), venv dirs, and runtime state files
(nio_store, welcome_state.json, wordle_stats.json) are excluded via .gitignore.
Includes deploy.sh to sync files to /opt/matrixbot and restart the service.

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

matrixbot/deploy.sh

@@ -0,0 +1,23 @@
+#!/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."