M2.8: switch over to the new loop

nisse-dev now runs only the conversational loop. The gated state machine
it was built alongside is gone:

- Removed control.py, planner.py, executor.py, approvals.py, gates.py
  (command_form moves to loop/reader.py), publish.py and poller.py, the
  old assembly in agent.py (its shared helpers move to loop/build.py),
  the store's state-machine view (get_state, transition), their tests,
  the old end-to-end and live planning/milestone/gate tests, and
  specs/orchestrator.qnt with its scenarios.
- Roles are driver, helper, expert and classifier; driver is required.
  loop:, roles.planner, roles.executor and tuning.executor are refused
  with what to use instead; tuning.driver takes the turn cap and failure
  limit.
- The benchmark and the capability matrix measure the driver: the
  loop's own system prompt and tools, the task's plan as the agreed
  restatement. Task plans end with finish_milestone, so earlier runs
  show as (old); stored runs' executor tuning reads as the driver's.
- A delegation on the loop records what its helper's alias resolved to
  (L9), as the old path's did.
- The dump shows a work item's revision and what it waits for.
- Behaviour the old tests covered and the loop shares stays covered:
  driver runs that fail on a model call, stop mid-turn, reset the
  failure count; go-aheads ignoring case and punctuation; a request too
  big to fit is never sent; the assembly tests, now on build_loop_agent.

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

nisse-dev/tests/test_dump.py

@@ -12,20 +12,23 @@ def store_with_a_run(path: Path) -> None:
     store.transcript(None, "operator").append(
         UserMessage(text="hello before use", source="matrix")
     )
-    store.transition(
-        "AWAIT_ARCH_SIGNOFF",
+    store.open_work_item(
+        "demo-1",
+        title="Add a truncate helper",
+        scope="demo",
+        position="WAITING",
+        data={"loop": {"wait": "go-ahead", "rev": 1}},
         cause="test",
-        project="demo",
-        data={"task_id": "demo-1", "gate": {"name": "arch", "rev": 1}},
     )
+    store.set_active("demo-1", cause="test")
     log = store.transcript("demo-1", "operator")
     log.append(UserMessage(text="Add a truncate helper", source="matrix"))
-    log.as_actor("planner").append(PlanSubmitted(plan="x" * 500, model="opus"))
-    executor = log.as_actor("executor")
-    executor.append(
+    driver = log.as_actor("driver")
+    driver.append(PlanSubmitted(plan="x" * 500, model="opus"))
+    driver.append(
         ToolCall(call_id="c1", tool="run_command", arguments={"command": "ls"})
     )
-    executor.append(ToolResult(call_id="c1", result="README.md", success=False))
+    driver.append(ToolResult(call_id="c1", result="README.md", success=False))
     log.begin_intent("open_pr", {"branch": "b"}, cause="test")
     store.close()
 
@@ -38,14 +41,14 @@ def test_the_dump_shows_items_intents_and_each_event_with_its_actor(
     text = render(db)
     assert "active work item: demo-1" in text
     assert (
-        "demo-1  open  position: AWAIT_ARCH_SIGNOFF  scope: demo  gate: arch rev-1"
-        in (text)
+        "demo-1  open  position: WAITING  scope: demo  rev-1  waits for: go-ahead"
+        in text
     )
     assert "pending intent #1 open_pr [demo-1]" in text
     assert "[agent/operator] USER [matrix]: hello before use" in text
     assert "[demo-1/operator] USER [matrix]: Add a truncate helper" in text
-    assert "[demo-1/planner] PLAN (opus, 500 chars): " in text and "[340 more]" in text
-    assert '[demo-1/executor] CALL run_command {"command": "ls"}' in text
+    assert "[demo-1/driver] PLAN (opus, 500 chars): " in text and "[340 more]" in text
+    assert '[demo-1/driver] CALL run_command {"command": "ls"}' in text
     assert "result (FAILED): README.md" in text