feat: Refactor agent-reach doctor UI with Rich markup for better visualization (#170)

* feat: use rich text formatting for doctor UI

* fix: remove unrelated cli formatting changes

* fix: keep cli diff focused on doctor rich output

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Co-authored-by: Yuki9814 <Yuki9814@users.noreply.github.com>

agent_reach/cli.py

@@ -1293,9 +1293,13 @@ def _cmd_uninstall(args):
 def _cmd_doctor():
     from agent_reach.config import Config
     from agent_reach.doctor import check_all, format_report
+    try:
+        from rich import print as rprint
+    except ImportError:
+        rprint = print
     config = Config()
     results = check_all(config)
-    print(format_report(results))
+    rprint(format_report(results))
 
 
 def _cmd_setup():