fix(filters): improve base model filtering UX

tests/routes/test_recipe_query_handler.py

@@ -0,0 +1,44 @@
+import json
+import logging
+from types import SimpleNamespace
+
+import pytest
+
+from py.routes.handlers.recipe_handlers import RecipeQueryHandler
+
+
+async def _noop():
+    return None
+
+
+@pytest.mark.asyncio
+async def test_recipe_query_handler_base_models_limit_zero_returns_all():
+    cache = SimpleNamespace(
+        raw_data=[
+            {"base_model": "SDXL"},
+            {"base_model": "LTXV 2.3"},
+            {"base_model": "SDXL"},
+        ]
+    )
+    scanner = SimpleNamespace(get_cached_data=lambda: None)
+
+    async def get_cached_data():
+        return cache
+
+    scanner.get_cached_data = get_cached_data
+
+    handler = RecipeQueryHandler(
+        ensure_dependencies_ready=_noop,
+        recipe_scanner_getter=lambda: scanner,
+        format_recipe_file_url=lambda value: value,
+        logger=logging.getLogger(__name__),
+    )
+
+    response = await handler.get_base_models(SimpleNamespace(query={"limit": "0"}))
+    payload = json.loads(response.text)
+
+    assert payload["success"] is True
+    assert payload["base_models"] == [
+        {"name": "SDXL", "count": 2},
+        {"name": "LTXV 2.3", "count": 1},
+    ]