MAJOR CLEANUP: Simplify codebase structure

🧹 Removed redundant files and directories:
- Sources/CCUsageMonitor/main-old.swift (old version)
- homebrew/ directory (redundant, we have separate tap repo)
- scripts/ directory (redundant installation scripts)
- install/ directory (old installer)
- docs/ directory (broken image references)
- bin/ directory (redundant, merged with main)
- Package.swift (not needed for direct Swift execution)

📁 New clean structure:
- main.swift (single source file - 197 lines)
- install.sh (updated for new structure)
- README.md (updated references and line count)
- LICENSE

✨ Benefits:
- Single source of truth (main.swift)
- No duplicate files or directories
- Cleaner repository structure
- Updated installation scripts
- Easier maintenance and development

Author: joachimBrindeau

Package.swift

@@ -7,9 +7,7 @@
 
 > **Monitor your Claude API usage and reset time directly in your macOS menu bar**
 
-Built on the trusted [ccusage CLI tool](https://github.com/evanmschultz/ccusage), this ultra-lightweight **181-line Swift app** displays your **Claude usage percentage** and **reset countdown** without cluttering your workflow.
-
-![CCUsage Monitor Menu](docs/ccusage-menu.png)
+Built on the trusted [ccusage CLI tool](https://github.com/evanmschultz/ccusage), this ultra-lightweight **197-line Swift app** displays your **Claude usage percentage** and **reset countdown** without cluttering your workflow.
 
 ![CCUsage Monitor Demo](https://img.shields.io/badge/Menu%20Bar%20Display-75%25%20%7C%202h%2015m-success?style=for-the-badge&logo=apple)
 
@@ -24,7 +22,7 @@ Transform your **ccusage** terminal data for your **current active billing block
 - 🔄 **Auto-refresh every 30 seconds** - always current data
 - ⌨️ **Right-click menu** to toggle display options and refresh
 - 🏃‍♂️ **Auto-start on login** - enabled by default
-- 🪶 **Ultra-minimal** - just 181 lines of Swift code
+- 🪶 **Ultra-minimal** - just 197 lines of Swift code
 
 ## 📦 Installation - Claude API Usage Monitor Setup
 
@@ -68,7 +66,7 @@ cd ccusage-monitor
 
 ```bash
 # Run directly from source (requires ccusage installed)
-swift bin/main.swift
+swift main.swift
 ```
 
 ## 🔧 How Claude Usage Monitoring Works