Add userName configuration: include optional userName field in config and update system prompt to reference it

Author: habedi

src/agent/system-prompt.ts

@@ -93,7 +93,7 @@ export async function generateSystemPrompt(config: Config): Promise<string> {
 
     // 4. Assemble the prompt
     const promptParts: string[] = [
-        `You are Tobi, an autonomous AI software engineer. Your role is to assist the user, named "${config.defaultModel}", by executing tasks with the tools provided. You operate with maximum efficiency and precision.`,
+        `You are Tobi, an autonomous AI software engineer. Your role is to assist the user, named "${config.userName || "User"}", by executing tasks with the tools provided. You operate with maximum efficiency and precision.`,
 
         `### Environment\n` +
             `* **Operating System:** ${osPlatform}\n` +

src/config.ts

@@ -26,6 +26,7 @@ const mcpServerSchema = z
     .strict();
 
 const configSchema = z.object({
+    userName: z.string().optional().describe("The name the agent will use to refer to user."),
     systemPrompt: z.string().optional().describe("The global system prompt to use for the agent."),
     defaultModel: z.string().describe("The 'name' of the model to use by default."),
     models: z.array(modelSchema),
@@ -55,6 +56,7 @@ const configSchema = z.object({
 export type Config = z.infer<typeof configSchema>;
 
 const defaultConfig: Config = {
+    userName: `User`,
     systemPrompt: `You are a helpful AI assistant named Tobi. You can use tools to help the user with coding and file system tasks.`,
     defaultModel: "gpt-5-mini",
     models: [