Fix OVHcloud AI Endpoints forgetting an empty LLM API selection (#179764)

Co-authored-by: Claude <noreply@anthropic.com>

homeassistant/components/ovhcloud_ai_endpoints/config_flow.py

@@ -176,7 +176,7 @@ class ConversationFlowHandler(ConfigSubentryFlow):
         existing = subentry.data
 
         if user_input is not None:
-            if not user_input.get(CONF_LLM_HASS_API):
+            if user_input.get(CONF_LLM_HASS_API) is None:
                 user_input.pop(CONF_LLM_HASS_API, None)
             user_input[CONF_MODEL] = existing[CONF_MODEL]
             return self.async_update_and_abort(
@@ -221,7 +221,7 @@ class ConversationFlowHandler(ConfigSubentryFlow):
             return self.async_abort(reason="entry_not_loaded")
 
         if user_input is not None:
-            if not user_input.get(CONF_LLM_HASS_API):
+            if user_input.get(CONF_LLM_HASS_API) is None:
                 user_input.pop(CONF_LLM_HASS_API, None)
             return self.async_create_entry(
                 title=user_input[CONF_MODEL], data=user_input

tests/components/ovhcloud_ai_endpoints/test_config_flow.py

@@ -201,6 +201,7 @@ async def test_create_conversation_agent_no_control(
     assert result["data"] == {
         CONF_MODEL: "Mistral-Nemo-Instruct-2407",
         CONF_PROMPT: "you are an assistant",
+        CONF_LLM_HASS_API: [],
     }
 
 
@@ -499,5 +500,11 @@ async def test_reconfigure_conversation_agent_clears_llm_api(
 
     subentry = mock_config_entry.subentries[subentry_id]
     assert subentry.data[CONF_PROMPT] == "updated prompt"
-    assert CONF_LLM_HASS_API not in subentry.data
+    assert subentry.data[CONF_LLM_HASS_API] == []
     assert subentry.data[CONF_MODEL] == "Meta-Llama-3_3-70B-Instruct"
+
+    result = await mock_config_entry.start_subentry_reconfigure_flow(hass, subentry_id)
+
+    schema = result["data_schema"].schema
+    key = next(k for k in schema if k == CONF_LLM_HASS_API)
+    assert key.default() == []