feat: initialize agents from a2a template

tests/test_template_init.py

@@ -0,0 +1,27 @@
+from __future__ import annotations
+
+import unittest
+
+from agent_builder.tools import _render_a2a_init_template
+
+
+class TemplateInitTests(unittest.TestCase):
+    def test_render_a2a_init_template_matches_sdk_starter(self) -> None:
+        files = _render_a2a_init_template(
+            "research-agent",
+            description="Research helper",
+        )
+
+        self.assertEqual(set(files), {"agent.py", "a2a.yaml", "requirements.txt"})
+        self.assertIn('name = "research-agent"', files["agent.py"])
+        self.assertIn('description = "Research helper"', files["agent.py"])
+        self.assertIn("LLMProvisioning.CALLER_PROVIDED", files["agent.py"])
+        self.assertIn("ctx.llm", files["agent.py"])
+        self.assertIn("create_deep_agent", files["agent.py"])
+        self.assertIn("name: research-agent", files["a2a.yaml"])
+        self.assertIn("entrypoint: agent:ResearchAgent", files["a2a.yaml"])
+        self.assertIn("deepagents>=0.5.0", files["requirements.txt"])
+
+    def test_render_a2a_init_template_rejects_invalid_names(self) -> None:
+        with self.assertRaises(ValueError):
+            _render_a2a_init_template("Bad Name")