fix: wire up Ollama Cloud dynamic model discovery in /model TUI picker

provider_model_ids() and list_authenticated_providers() had no case for
"ollama-cloud", so the /model slash command showed 0 models despite
fetch_ollama_cloud_models() being fully implemented. The CLI subcommand
worked because it called fetch_ollama_cloud_models() directly.

- Add ollama-cloud case to provider_model_ids() in models.py
- Populate curated dict for ollama-cloud in list_authenticated_providers()
- Add tests for both code paths

tests/hermes_cli/test_ollama_cloud_provider.py

@@ -114,6 +114,65 @@ class TestOllamaCloudModelCatalog:
         assert "ollama-cloud" in _PROVIDER_LABELS
         assert _PROVIDER_LABELS["ollama-cloud"] == "Ollama Cloud"
 
+    def test_provider_model_ids_returns_dynamic_models(self, tmp_path, monkeypatch):
+        """provider_model_ids('ollama-cloud') should call fetch_ollama_cloud_models()."""
+        from hermes_cli.models import provider_model_ids
+
+        monkeypatch.setenv("HERMES_HOME", str(tmp_path))
+        monkeypatch.setenv("OLLAMA_API_KEY", "test-key")
+
+        mock_mdev = {
+            "ollama-cloud": {
+                "models": {
+                    "qwen3.5:397b": {"tool_call": True},
+                    "glm-5": {"tool_call": True},
+                }
+            }
+        }
+        with patch("hermes_cli.models.fetch_api_models", return_value=["qwen3.5:397b"]), \
+             patch("agent.models_dev.fetch_models_dev", return_value=mock_mdev):
+            result = provider_model_ids("ollama-cloud", force_refresh=True)
+
+        assert len(result) > 0
+        assert "qwen3.5:397b" in result
+
+
+# ── Model Picker (list_authenticated_providers) ──
+
+class TestOllamaCloudModelPicker:
+    def test_ollama_cloud_shows_model_count(self, tmp_path, monkeypatch):
+        """Ollama Cloud should show non-zero model count in provider picker."""
+        from hermes_cli.model_switch import list_authenticated_providers
+
+        monkeypatch.setenv("HERMES_HOME", str(tmp_path))
+        monkeypatch.setenv("OLLAMA_API_KEY", "test-key")
+
+        mock_mdev = {
+            "ollama-cloud": {
+                "models": {
+                    "qwen3.5:397b": {"tool_call": True},
+                    "glm-5": {"tool_call": True},
+                }
+            }
+        }
+        with patch("hermes_cli.models.fetch_api_models", return_value=["qwen3.5:397b"]), \
+             patch("agent.models_dev.fetch_models_dev", return_value=mock_mdev):
+            providers = list_authenticated_providers(current_provider="ollama-cloud")
+
+        ollama = next((p for p in providers if p["slug"] == "ollama-cloud"), None)
+        assert ollama is not None, "ollama-cloud should appear when OLLAMA_API_KEY is set"
+        assert ollama["total_models"] > 0, "ollama-cloud should show non-zero model count"
+
+    def test_ollama_cloud_not_shown_without_creds(self, monkeypatch):
+        """Ollama Cloud should not appear without credentials."""
+        from hermes_cli.model_switch import list_authenticated_providers
+
+        monkeypatch.delenv("OLLAMA_API_KEY", raising=False)
+
+        providers = list_authenticated_providers(current_provider="openrouter")
+        ollama = next((p for p in providers if p["slug"] == "ollama-cloud"), None)
+        assert ollama is None, "ollama-cloud should not appear without OLLAMA_API_KEY"
+
 
 # ── Merged Model Discovery ──