fix(assistants): remove websearch from assistant tool options, add websearch in backend logic (#1465)

closes #1464

Author: nsarrazin

src/lib/server/textGeneration/tools.ts

@@ -32,9 +32,14 @@ export async function getTools(
 	if (assistant) {
 		if (assistant?.tools?.length) {
 			preferences = assistant.tools;
-		} else if (assistantHasWebSearch(assistant)) {
-			return [directlyAnswer, websearch];
+
+			if (assistantHasWebSearch(assistant)) {
+				preferences.push(websearch._id.toString());
+			}
 		} else {
+			if (assistantHasWebSearch(assistant)) {
+				return [websearch, directlyAnswer];
+			}
 			return [directlyAnswer];
 		}
 	}

src/routes/api/tools/search/+server.ts

@@ -33,6 +33,7 @@ export async function GET({ url, locals }) {
 
 	const matchingConfigTools = toolFromConfigs
 		.filter((tool) => !tool?.isHidden)
+		.filter((tool) => tool.name !== "websearch") // filter out websearch tool from config tools since its added separately
 		.filter((tool) => {
 			if (queryTokens) {
 				return generateSearchTokens(tool.displayName).some((token) =>