fix: surface openrouter/fusion in the model picker

hermes_cli/models.py

@@ -95,6 +95,8 @@ def _urlopen_model_catalog_request(req: urllib.request.Request, *, timeout: floa
     ("sakana/fugu-ultra",                      ""),
     # OpenRouter routers
     ("openrouter/pareto-code",                 "auto-routes to cheapest coder meeting openrouter.min_coding_score"),
+    ("openrouter/fusion",                      "multi-model deliberation panel + analyst; ~4-5x cost when invoked"),
+    ("openrouter/fusion-flash",                "fusion with latency-tuned general-fast preset"),
     # Free tier
     ("openrouter/elephant-alpha",              "free"),
     ("poolside/laguna-m.1:free",               "free"),
@@ -1490,13 +1492,21 @@ def _openrouter_model_supports_tools(item: Any) -> bool:
     so the picker doesn't silently empty for those users. Only hide models
     whose ``supported_parameters`` is an explicit list that omits ``tools``.
 
+    **Permissive when the list is empty.** OpenRouter's meta-routers (e.g.
+    ``openrouter/fusion``) publish ``supported_parameters: []`` because the
+    concrete model is resolved per-request, yet they fully support tool
+    calling (verified against the live endpoint). An empty list carries no
+    capability information, so treat it like a missing field rather than an
+    explicit "no tools" declaration.
+
     Ported from Kilo-Org/kilocode#9068.
     """
     if not isinstance(item, dict):
         return True
     params = item.get("supported_parameters")
-    if not isinstance(params, list):
-        # Field absent / malformed / None — be permissive.
+    if not isinstance(params, list) or not params:
+        # Field absent / malformed / None / empty — carries no capability
+        # information, so be permissive.
         return True
     return "tools" in params
 

tests/hermes_cli/test_models.py

@@ -113,11 +113,23 @@ def test_tools_in_supported_parameters(self):
         ) is True
 
 
-    def test_empty_supported_parameters_list_drops_model(self):
-        """Explicit empty list → no tools → drop."""
+    def test_empty_supported_parameters_list_is_permissive(self):
+        """Empty list carries no capability info → allow (openrouter/fusion).
+
+        OpenRouter meta-routers (e.g. ``openrouter/fusion``) publish
+        ``supported_parameters: []`` because the concrete model is resolved
+        per-request, yet they support tool calling. Treat empty like missing.
+        """
+        from hermes_cli.models import _openrouter_model_supports_tools
+        assert _openrouter_model_supports_tools(
+            {"id": "openrouter/fusion", "supported_parameters": []}
+        ) is True
+
+    def test_explicit_list_without_tools_drops_model(self):
+        """Non-empty list that omits 'tools' → drop."""
         from hermes_cli.models import _openrouter_model_supports_tools
         assert _openrouter_model_supports_tools(
-            {"id": "x", "supported_parameters": []}
+            {"id": "x", "supported_parameters": ["temperature", "response_format"]}
         ) is False