feat(agent-runner): expose effective prompt and transcript history

tests/unit_tests/pipeline/test_preproc.py

@@ -50,6 +50,8 @@ def make_host_model_runner_descriptor(
     multimodal_input: bool = True,
     tool_calling: bool = True,
     knowledge_retrieval: bool = True,
+    skill_authoring: bool = False,
+    skill_injection: bool = False,
 ):
     from langbot.pkg.agent.runner.descriptor import AgentRunnerDescriptor
 
@@ -69,6 +71,8 @@ def make_host_model_runner_descriptor(
             'tool_calling': tool_calling,
             'knowledge_retrieval': knowledge_retrieval,
             'multimodal_input': multimodal_input,
+            'skill_authoring': skill_authoring,
+            'skill_injection': skill_injection,
         },
         permissions={
             'models': ['list', 'invoke', 'stream'],