Bump agent-builder to a2a-pack 0.1.16

agent.py

@@ -47,7 +47,7 @@ class AgentBuilder(A2AAgent[BuilderConfig, NoAuth]):
         "Writes the project into the user's workspace, validates it in a "
         "sandbox, then ships it via the control plane."
     )
-    version = "0.1.0"
+    version = "0.1.1"
 
     config_model = BuilderConfig
     auth_model = NoAuth
@@ -256,4 +256,4 @@ def _find_url(value: Any) -> str | None:
         m = _URL_RE.search(value)
         return m.group(0) if m else None
     return None
-# rebuild against fresh a2a-pack-base 2026-05-16T20:29:04Z (a2a-pack 0.1.3)
+# rebuild against a2a-pack 0.1.16 for nullable LLM extra_body handling