refactor: rename package to @mariozechner/pi-coding-agent

- Changed package name from @mariozechner/coding-agent to @mariozechner/pi-coding-agent
- Updated README installation command
- Binary name 'pi' remains the same
- Avoids conflict with existing @mariozechner/pi (pods package)

packages/coding-agent/README.md

@@ -5,7 +5,7 @@ Interactive CLI coding assistant powered by multiple LLM providers. Chat with AI
 ## Installation
 
 ```bash
-npm install -g @mariozechner/coding-agent
+npm install -g @mariozechner/pi-coding-agent
 ```
 
 ## Quick Start

packages/coding-agent/package.json

@@ -1,5 +1,5 @@
 {
-	"name": "@mariozechner/coding-agent",
+	"name": "@mariozechner/pi-coding-agent",
 	"version": "0.6.1",
 	"description": "Coding agent CLI with read, bash, edit, write tools and session management",
 	"type": "module",