Enhance ASCII art in banner for improved console output

Author: iamspathan

src/llm_authz_audit/output/banner.py

@@ -13,9 +13,9 @@
 
 
 _ART = """\
-  [bold #10b981]╦   ╦   ╔╦╗[/bold #10b981]
-  [bold #10b981]║   ║   ║║║[/bold #10b981]
-  [bold #10b981]╩═╝ ╩═╝ ╩ ╩[/bold #10b981]   [bold #e2e8f0]authz[/bold #e2e8f0][#64748b]-[/#64748b][bold #10b981]audit[/bold #10b981]"""
+  [bold #10b981]╦   ╦   ╔╦╗   ╔═╗ ╦ ╦ ╔╦╗ ╦ ╦ ╔═╗   ╔═╗ ╦ ╦ ╦═╗  ╦  ╔╦╗[/bold #10b981]
+  [bold #10b981]║   ║   ║║║   ╠═╣ ║ ║  ║  ╠═╣ ╔═╝   ╠═╣ ║ ║ ║ ║  ║   ║[/bold #10b981]
+  [bold #10b981]╩═╝ ╩═╝ ╩ ╩   ╩ ╩ ╚═╝  ╩  ╩ ╩ ╚══   ╩ ╩ ╚═╝ ╩═╝  ╩   ╩[/bold #10b981]"""
 
 _TAGLINE = "  Static Security Analyzer for LLM Applications"
 _URL = "  https://github.com/aiauthz/llm-authz-audit"