fix: ollama tool use

Author: tomasz-stefaniak

core/llm/llms/Ollama.ts

@@ -1,5 +1,6 @@
 import { Mutex } from "async-mutex";
 import { JSONSchema7, JSONSchema7Object } from "json-schema";
+import { v4 as uuidv4 } from "uuid";
 
 import {
   ChatMessage,
@@ -90,10 +91,10 @@ type OllamaBaseResponse = {
   model: string;
   created_at: string;
 } & (
-    | {
+  | {
       done: false;
     }
-    | {
+  | {
       done: true;
       done_reason: string;
       total_duration: number; // Time spent generating the response in nanoseconds
@@ -104,7 +105,7 @@ type OllamaBaseResponse = {
       eval_duration: number; // Time spent generating the response in nanoseconds
       context: number[]; // An encoding of the conversation used in this response; can be sent in the next request to keep conversational memory
     }
-  );
+);
 
 type OllamaErrorResponse = {
   error: string;
@@ -113,14 +114,14 @@ type OllamaErrorResponse = {
 type OllamaRawResponse =
   | OllamaErrorResponse
   | (OllamaBaseResponse & {
-    response: string; // the generated response
-  });
+      response: string; // the generated response
+    });
 
 type OllamaChatResponse =
   | OllamaErrorResponse
   | (OllamaBaseResponse & {
-    message: OllamaChatMessage;
-  });
+      message: OllamaChatMessage;
+    });
 
 interface OllamaTool {
   type: "function";
@@ -370,7 +371,7 @@ class Ollama extends BaseLLM implements ModelInstaller {
             if ("error" in j) {
               throw new Error(j.error);
             }
-            j.response ??= ''
+            j.response ??= "";
             yield j.response;
           } catch (e) {
             throw new Error(`Error parsing Ollama response: ${e} ${chunk}`);
@@ -439,6 +440,7 @@ class Ollama extends BaseLLM implements ModelInstaller {
           // But ollama returns the full object in one response with no streaming
           chatMessage.toolCalls = res.message.tool_calls.map((tc) => ({
             type: "function",
+            id: `tc_${uuidv4()}`, // Generate a proper UUID with a prefix
             function: {
               name: tc.function.name,
               arguments: JSON.stringify(tc.function.arguments),