Update project name from 'kbr' to 'ko-browser'

Author: libi

README.md

@@ -20,7 +20,7 @@
 
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-**kbr** is a browser automation tool built in Go, designed for AI agents. It provides both a **CLI tool** and a **Go library** with a custom accessibility tree snapshot format that saves **46%+ tokens** compared to alternatives.
+**ko-browser** is a browser automation tool built in Go, designed for AI agents. It provides both a **CLI tool** and a **Go library** with a custom accessibility tree snapshot format that saves **46%+ tokens** compared to alternatives.
 
 ### ✨ Key Features