[verified] feat: complete Ralph task workstreams

tests/test_mining_cli.py

@@ -9,6 +9,10 @@ import types
 from pathlib import Path
 from unittest.mock import MagicMock, patch
 
+# A fake node server has no real backend to prove capability with; say so
+# explicitly rather than bypassing startup's fail-closed admission.
+from meshnet_node.testing import assume_capability
+
 
 # ---------------------------------------------------------------------------
 # model_catalog tests
@@ -336,6 +340,7 @@ def test_startup_auto_detects_shard_range(monkeypatch, tmp_path):
         # shard_start and shard_end intentionally omitted
         quantization="bfloat16",
         host="127.0.0.1",
+        capability_validator=assume_capability,
     )
     assert calls == ["Qwen/Qwen2.5-0.5B-Instruct"]
     assert isinstance(node, FakeNode)