feat: add rsync deploy script with documentation

deploy.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+# deploy.sh - Deploy dgray.io to production server via rsync
+#
+# Usage:   ./deploy.sh [user@host] [remote-path]
+# Example: ./deploy.sh admin@dgray.io /home/admin/web/dgray.io/public_html
+#
+# Prerequisites:
+#   - SSH key authentication configured
+#   - rsync installed locally and on server
+
+set -e
+
+# --- Configuration ---
+REMOTE_USER_HOST="${1:-admin@dgray.io}"
+REMOTE_PATH="${2:-/home/admin/web/dgray.io/public_html}"
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+
+# Files/directories to exclude from deployment
+EXCLUDES=(
+    ".git"
+    ".gitignore"
+    "AGENTS.md"
+    "deploy.sh"
+    "docs/"
+    "tests/"
+    "README.md"
+    ".vscode"
+    ".idea"
+)
+
+# --- Build exclude arguments ---
+EXCLUDE_ARGS=""
+for item in "${EXCLUDES[@]}"; do
+    EXCLUDE_ARGS="$EXCLUDE_ARGS --exclude=$item"
+done
+
+# --- Deploy ---
+echo "Deploying dgray.io"
+echo "  From: $SCRIPT_DIR"
+echo "  To:   $REMOTE_USER_HOST:$REMOTE_PATH"
+echo ""
+
+rsync -avz --delete \
+    $EXCLUDE_ARGS \
+    "$SCRIPT_DIR/" \
+    "$REMOTE_USER_HOST:$REMOTE_PATH/"
+
+echo ""
+echo "Deploy complete."