Fix CI/pulumi blockers and document test suites with latest PASS results.

Stabilize node status, cluster-wide Ceph OSD ids, and QEMU cpu utilization so
status/list no longer 500 on model strings; align pulumi defaults to pve1;
add bilingual testing docs with the 2026-07-18 ci-all + pulumi-tests pass.

tests/unit/test_task_worker.py

@@ -93,7 +93,10 @@ async def test_worker_retries_after_claim_failure() -> None:
         poll_seconds=0.001,
     )
     running = asyncio.create_task(worker.run())
-    await asyncio.sleep(0.01)
+    for _ in range(200):
+        if repository.attempts > 1:
+            break
+        await asyncio.sleep(0.01)
     worker.stop()
     await running