chore: add CHANGELOG.md for v1.0.0 initial public release

Author: datlechin

CHANGELOG.md

@@ -0,0 +1,55 @@
+# Changelog
+
+All notable changes to OpenTable will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [1.0.0] - 2026-02-05
+
+### Initial Public Release
+
+OpenTable is a native macOS database client built with SwiftUI and AppKit, designed as a fast, lightweight alternative to TablePlus.
+
+### Features
+
+- **Database Support**
+  - MySQL/MariaDB connections
+  - PostgreSQL support
+  - SQLite database files
+  - SSH tunneling for secure remote connections
+
+- **SQL Editor**
+  - Syntax highlighting with TreeSitter
+  - Intelligent autocomplete for tables, columns, and SQL keywords
+  - Multi-tab editing support
+  - Query execution with result grid
+
+- **Data Management**
+  - Interactive data grid with sorting and filtering
+  - Inline editing capabilities
+  - Add, edit, and delete rows
+  - Pagination for large result sets
+  - Export data (CSV, JSON, SQL)
+
+- **Database Explorer**
+  - Browse tables, views, and schema
+  - View table structure and indexes
+  - Quick table information and statistics
+  - Search across database objects
+
+- **User Experience**
+  - Native macOS design with SwiftUI
+  - Dark mode support
+  - Customizable keyboard shortcuts
+  - Query history tracking
+  - Multiple database connections
+
+- **Developer Features**
+  - Import/export connection configurations
+  - Custom SQL query templates
+  - Performance optimized for large datasets
+
+[1.0.0]: https://github.com/datlechin/opentable/releases/tag/v1.0.0