docs: clean up and format changelog

- Remove duplicated entries
- Add detailed feature descriptions
- Format with proper version number and date
- Improve breaking changes documentation

CHANGELOG.md

@@ -1,18 +1,29 @@
 # Changelog
 
-
-## ...fix/electron-vue-ui-state
-
+## v1.0.0 (2025-01-26)
 
 ### 🚀 Enhancements
 
 - ⚠️  Complete ESLint configuration overhaul and theme system improvements (6efcf43)
+  - Migrate from legacy .eslintrc.json to modern flat config system
+  - Remove conflicting ESLint configuration files
+  - Fix auto-generation of eslint.config.mjs by Nuxt
+  - Update ESLint rules to use single quotes and proper formatting
+  - Add comprehensive theme switching system with 24 palettes
+  - Implement proper daisyUI theme integration
+  - Add theme store with persistence and dark/light mode support
+  - Create ThemeSwitcher component with enhanced UI
+  - Fix package.json scripts to work with new ESLint flat config
+  - Update VS Code settings for proper ESLint integration
+
+### 🧹 Chore
+
+- Add changelogen configuration and scripts (e6b817b)
 
 #### ⚠️ Breaking Changes
 
-- ⚠️  Complete ESLint configuration overhaul and theme system improvements (6efcf43)
+- **ESLint configuration migrated to flat config system** - Projects using this codebase will need to update their ESLint setup
 
 ### ❤️ Contributors
 
 - Rizary <rizary@rizilab.com>
-