Add Google Colab demo notebook

Author: nulone

demo.ipynb

@@ -0,0 +1,103 @@
+{
+  "nbformat": 4,
+  "nbformat_minor": 0,
+  "metadata": {
+    "colab": {"provenance": []},
+    "kernelspec": {"name": "python3", "display_name": "Python 3"}
+  },
+  "cells": [
+    {
+      "cell_type": "markdown",
+      "metadata": {},
+      "source": [
+        "# JQ-By-Example Demo\n",
+        "\n",
+        "[![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/nulone/jq-by-example/blob/main/demo.ipynb)\n",
+        "\n",
+        "**AI-powered jq filter synthesis from input/output JSON examples.**\n",
+        "\n",
+        "GitHub: [nulone/jq-by-example](https://github.com/nulone/jq-by-example)"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "metadata": {},
+      "source": [
+        "# Setup\n",
+        "!pip install -q jq-by-example\n",
+        "!apt-get install -y jq > /dev/null 2>&1\n",
+        "!echo \"jq version: $(jq --version)\""
+      ],
+      "execution_count": null,
+      "outputs": []
+    },
+    {
+      "cell_type": "code",
+      "metadata": {},
+      "source": [
+        "# Set API Key\n",
+        "from getpass import getpass\n",
+        "import os\n",
+        "\n",
+        "api_key = getpass('Enter your OpenAI API key: ')\n",
+        "os.environ['OPENAI_API_KEY'] = api_key\n",
+        "print('✅ API key set')"
+      ],
+      "execution_count": null,
+      "outputs": []
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {},
+      "source": ["## Example 1: Extract nested field"]
+    },
+    {
+      "cell_type": "code",
+      "metadata": {},
+      "source": [
+        "!jq-by-example \\\n",
+        "  --input '{\"user\": {\"name\": \"Alice\", \"age\": 30}}' \\\n",
+        "  --output '\"Alice\"' \\\n",
+        "  --desc 'Extract user name'"
+      ],
+      "execution_count": null,
+      "outputs": []
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {},
+      "source": ["## Example 2: Filter array"]
+    },
+    {
+      "cell_type": "code",
+      "metadata": {},
+      "source": [
+        "!jq-by-example \\\n",
+        "  --input '[{\"name\": \"Alice\", \"active\": true}, {\"name\": \"Bob\", \"active\": false}]' \\\n",
+        "  --output '[{\"name\": \"Alice\", \"active\": true}]' \\\n",
+        "  --desc 'Keep only active users'"
+      ],
+      "execution_count": null,
+      "outputs": []
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {},
+      "source": ["## Try your own!\n", "Modify the values below:"]
+    },
+    {
+      "cell_type": "code",
+      "metadata": {},
+      "source": [
+        "# Your custom example\n",
+        "INPUT = '{\"data\": [1, 2, 3]}'\n",
+        "OUTPUT = '[2, 4, 6]'\n",
+        "DESC = 'Double each number'\n",
+        "\n",
+        "!jq-by-example --input '{INPUT}' --output '{OUTPUT}' --desc '{DESC}'"
+      ],
+      "execution_count": null,
+      "outputs": []
+    }
+  ]
+}