sched: schedule administration API, admitted inspection, occurrence pages (T13)

src/wf_api/runs.py

@@ -337,13 +337,34 @@ class WorkflowRunApi:
         }
 
     async def inspect_run(self, *, run_id: str) -> RunResult:
-        """Return one durable stopped-run summary without debug trace entries.
+        """Return one durable run summary without debug trace entries.
 
-        Admitted runs with no stopped checkpoint fail closed here (no
-        fabricated trace/output); checkpoint-free inspection arrives with
-        the scheduling administration surface (T13).
+        Admitted runs with no stopped checkpoint report their durable
+        admission truthfully (status admitted, no checkpoint id, no
+        trace slice, output, or interrupt) instead of failing closed;
+        inspection never fabricates checkpoint-derived state.
+        ``read_run_trace`` still rejects checkpoint-less runs.
         """
-        record, run = load_stored_run(self._run_store(), run_id)
+        store = self._run_store()
+        record = store.get_run(run_id)
+        if record.status is StoredRunStatus.ADMITTED:
+            environment = record.environment
+            try:
+                max_steps = store.get_admission(run_id).max_steps
+            except KeyError:
+                max_steps = None
+            return _run_payload(
+                deployment=environment.deployment,
+                artifact=environment.root_artifact,
+                status=record.status.value,
+                run_id=record.id,
+                resume_readiness=record.resume_readiness.value,
+                diagnostics=record.diagnostics,
+                trace_count=0,
+                max_steps=max_steps,
+                steps_executed=0,
+            )
+        record, run = load_stored_run(store, run_id)
         environment = record.environment
         return _run_payload(
             deployment=environment.deployment,