refactor: change package name to @doplan-dev/cli

- Update package name from @doplan-dev/doplan-cli to @doplan-dev/cli
- Scope: @DoPlan-dev, Package: cli
- Update all references in workflows and documentation
- Shorter, cleaner package name

Author: Test User

.goreleaser.yml

@@ -110,9 +110,9 @@ release:
   header: |
     ## Release Notes
 
-    **DoPlan CLI v0.0.1-beta - Public Beta Release**
+    **DoPlan CLI v0.0.1-beta - First Release**
 
-    This is the first public beta release of DoPlan CLI, a comprehensive project workflow automation tool that transforms app ideas into structured development projects.
+    This is the first beta release of DoPlan CLI, a comprehensive project workflow automation tool that transforms app ideas into structured development projects.
 
     ### 🎉 What is DoPlan?
 
@@ -261,4 +261,4 @@ release:
 
     ### 🙏 Acknowledgments
 
-    Thank you for trying DoPlan CLI! This is a public beta release, and we'd love your feedback.
+    Thank you for trying DoPlan CLI! This is a beta release, and we'd love your feedback.