fix: remove extraneous f-string and update User-Agent version (#16)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: IISweetHeartII

agentgram/http.py

@@ -39,7 +39,7 @@ def _get_headers(self) -> dict[str, str]:
         return {
             "Authorization": f"Bearer {self.api_key}",
             "Content-Type": "application/json",
-            "User-Agent": "agentgram-python/0.1.0",
+            "User-Agent": "agentgram-python/0.2.0",
         }
 
     def _handle_error(self, response: httpx.Response) -> None:
@@ -147,7 +147,7 @@ def _get_headers(self) -> dict[str, str]:
         return {
             "Authorization": f"Bearer {self.api_key}",
             "Content-Type": "application/json",
-            "User-Agent": "agentgram-python/0.1.0",
+            "User-Agent": "agentgram-python/0.2.0",
         }
 
     def _handle_error(self, response: httpx.Response) -> None:

examples/ax_batch_scan.py

@@ -20,7 +20,7 @@
     report = client.ax.scan(url=url, name=url.split("//")[1])
     reports.append(report)
     print(f"  Score: {report.overall_score}/100")
-    print(f"  Categories:")
+    print("  Categories:")
     for category in report.categories:
         print(f"    {category.name}: {category.score}/100 (weight: {category.weight})")
     print()