Rename the delegate and consultant roles to helper and expert

Architecture L9's role names, for the two roles with a direct
counterpart: the delegation role is now 'helper' and the ask_expert role
'expert', in RoleMap, configuration (roles.helper, roles.expert),
recorded events and tests. 'planner' and 'executor' stay distinct for
now; they become 'driver' when the new loop merges them (Development
Plan M2.3).

Configurations must rename their keys: nisse-dev.example.yaml and
tests/integration/nisse-test.yaml are updated here.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PPQ14L3LikyefCMFBqEbKE

tests/integration/nisse-test.yaml

@@ -23,8 +23,8 @@ llm:
 roles:
   executor: claude-haiku-4-5
   planner: claude-haiku-4-5
-  delegate: claude-haiku-4-5
-  consultant: claude-haiku-4-5
+  helper: claude-haiku-4-5
+  expert: claude-haiku-4-5
 
 matrix:
   homeserver: https://matrix.dongar.net

tests/integration/test_expert_live.py

@@ -22,7 +22,7 @@ pytestmark = pytest.mark.integration
 def desk(tmp_path: Path, litellm: LiteLLMClient, live_model: str):
     def make(budget: int = 2) -> tuple[ExpertDesk, StateStore]:
         model = live_model
-        roles = RoleMap(executor=model, planner=model, delegate=model, consultant=model)
+        roles = RoleMap(executor=model, planner=model, helper=model, expert=model)
         store = StateStore(
             tmp_path / "state.db", oplog=OpLog("nisse-dev", io.StringIO())
         )
@@ -43,7 +43,7 @@ def test_live_consult_parses_against_the_local_schema(desk) -> None:
     assert len(answer.answer) > 20
     # The consult is captured for L9 without any extra bookkeeping.
     [record] = collect(store)
-    assert record.role == "consultant"
+    assert record.role == "expert"
     assert record.exit_status == "answered"
 
 

tests/integration/test_milestone_live.py

@@ -64,7 +64,7 @@ def test_plan_approve_execute_produces_a_real_file(
     # Both roles use the capable model here: the point is the whole gated
     # loop over a real proxy, not local-model competence (measured separately).
     model = live_model
-    roles = RoleMap(executor=model, planner=model, delegate=model, consultant=model)
+    roles = RoleMap(executor=model, planner=model, helper=model, expert=model)
     client = litellm
     store = StateStore(tmp_path / "state.db", oplog=OpLog("nisse-dev", io.StringIO()))
     workspace = Workspace(tmp_path / "work", timeout_s=60)

tests/integration/test_planning_live.py

@@ -25,7 +25,7 @@ def test_live_planning_turn_returns_a_tool_action(
     tmp_path: Path, litellm: LiteLLMClient, live_model: str
 ) -> None:
     model = live_model
-    roles = RoleMap(executor=model, planner=model, delegate=model, consultant=model)
+    roles = RoleMap(executor=model, planner=model, helper=model, expert=model)
     store = StateStore(tmp_path / "state.db", oplog=OpLog("nisse-dev", io.StringIO()))
     store.append_event(
         UserMessage(