feat: add LiteLLM as AI gateway provider

src/row_bot/providers/catalog.py

@@ -59,6 +59,15 @@
         risk_label="third_party_router",
         icon="🌐",
     ),
+    "litellm": ProviderDefinition(
+        id="litellm",
+        display_name="LiteLLM",
+        auth_methods=(AuthMethod.API_KEY,),
+        default_transport=TransportMode.OPENAI_CHAT,
+        base_url="http://localhost:4000/v1",
+        risk_label="third_party_router",
+        icon="🔀",
+    ),
     "opencode_zen": ProviderDefinition(
         id="opencode_zen",
         display_name="OpenCode Zen",

src/row_bot/providers/runtime.py

@@ -19,6 +19,7 @@ def list_configured_provider_ids() -> list[str]:
             "openai",
             "ollama_cloud",
             "openrouter",
+            "litellm",
             "opencode_zen",
             "opencode_go",
             "atlascloud",

tests/test_litellm_provider.py

@@ -0,0 +1,22 @@
+import unittest
+
+from row_bot.providers.catalog import PROVIDER_DEFINITIONS, get_provider_definition
+from row_bot.providers.models import AuthMethod, TransportMode
+
+
+class TestLiteLLMProvider(unittest.TestCase):
+    def test_provider_registered(self):
+        self.assertIn("litellm", PROVIDER_DEFINITIONS)
+
+    def test_provider_definition(self):
+        defn = get_provider_definition("litellm")
+        self.assertIsNotNone(defn)
+        self.assertEqual(defn.id, "litellm")
+        self.assertEqual(defn.display_name, "LiteLLM")
+        self.assertEqual(defn.default_transport, TransportMode.OPENAI_CHAT)
+        self.assertEqual(defn.base_url, "http://localhost:4000/v1")
+        self.assertIn(AuthMethod.API_KEY, defn.auth_methods)
+
+    def test_provider_uses_openai_compatible_transport(self):
+        defn = get_provider_definition("litellm")
+        self.assertEqual(defn.default_transport, TransportMode.OPENAI_CHAT)