refactor(agent): main agent loop extracted away

Still not super sure how to represent these agents in code.
It doesn't make the most amount of sense to keep them in structs. A
curried function is more like it, with system prompt and tooling.

Maybe that's what I'll end up doing.

backend/agents/client/client.go

@@ -9,6 +9,7 @@ import (
 	"os"
 
 	"github.com/charmbracelet/log"
+	"github.com/google/uuid"
 )
 
 type ResponseFormat struct {
@@ -217,3 +218,39 @@ func (client AgentClient) Process(info ToolHandlerInfo, req *AgentRequestBody) e
 
 	return err
 }
+
+func (client AgentClient) RunAgent(systemPrompt string, jsonTools string, endToolCall string, userId uuid.UUID, imageId uuid.UUID, imageName string, imageData []byte) error {
+	var tools any
+	err := json.Unmarshal([]byte(jsonTools), &tools)
+
+	toolChoice := "any"
+
+	request := AgentRequestBody{
+		Tools:       &tools,
+		ToolChoice:  &toolChoice,
+		Model:       "pixtral-12b-2409",
+		Temperature: 0.3,
+		EndToolCall: endToolCall,
+		ResponseFormat: ResponseFormat{
+			Type: "text",
+		},
+		Chat: &Chat{
+			Messages: make([]ChatMessage, 0),
+		},
+	}
+
+	request.Chat.AddSystem(systemPrompt)
+	request.Chat.AddImage(imageName, imageData)
+
+	_, err = client.Request(&request)
+	if err != nil {
+		return err
+	}
+
+	toolHandlerInfo := ToolHandlerInfo{
+		ImageId: imageId,
+		UserId:  userId,
+	}
+
+	return client.ToolLoop(toolHandlerInfo, &request)
+}