fix(webui): remove unused bot identity settings

webui/src/tests/api.test.ts

@@ -413,13 +413,11 @@ describe("webui API helpers", () => {
       provider: "openrouter",
       contextWindowTokens: 262144,
       timezone: "Asia/Shanghai",
-      botName: "nanobot",
-      botIcon: "nb",
       toolHintMaxLength: 120,
     });
 
     expect(fetch).toHaveBeenCalledWith(
-      "/api/settings/update?model_preset=default&model=openrouter%2Ftest&provider=openrouter&context_window_tokens=262144&timezone=Asia%2FShanghai&bot_name=nanobot&bot_icon=nb&tool_hint_max_length=120",
+      "/api/settings/update?model_preset=default&model=openrouter%2Ftest&provider=openrouter&context_window_tokens=262144&timezone=Asia%2FShanghai&tool_hint_max_length=120",
       expect.objectContaining({
         headers: { Authorization: "Bearer tok" },
       }),

webui/src/tests/app-layout.test.tsx

@@ -62,8 +62,6 @@ function baseSettingsPayload() {
       temperature: 0.1,
       reasoning_effort: null,
       timezone: "UTC",
-      bot_name: "nanobot",
-      bot_icon: "nb",
       tool_hint_max_length: 40,
     },
     model_presets: [{
@@ -1761,8 +1759,6 @@ describe("App layout", () => {
                 temperature: 0.1,
                 reasoning_effort: null,
                 timezone: "UTC",
-                bot_name: "nanobot",
-                bot_icon: "nb",
                 tool_hint_max_length: 40,
               },
               model_presets: [
@@ -2089,7 +2085,10 @@ describe("App layout", () => {
     expect(screen.queryByDisplayValue("unsaved-brave-key")).not.toBeInTheDocument();
 
     fireEvent.click(within(settingsNav).getByRole("button", { name: "System" }));
-    expect(screen.getByText("Bot name")).toBeInTheDocument();
+    expect(screen.getByText("Regional")).toBeInTheDocument();
+    expect(screen.getByText("Timezone")).toBeInTheDocument();
+    expect(screen.queryByText("Bot name")).not.toBeInTheDocument();
+    expect(screen.queryByText("Bot icon")).not.toBeInTheDocument();
     expect(screen.queryByText("Tool hint length")).not.toBeInTheDocument();
     expect(screen.queryByText("Heartbeat")).not.toBeInTheDocument();
     expect(screen.queryByText("Dream")).not.toBeInTheDocument();
@@ -2281,8 +2280,6 @@ describe("App layout", () => {
                 temperature: 0.1,
                 reasoning_effort: null,
                 timezone: "UTC",
-                bot_name: "nanobot",
-                bot_icon: "nb",
                 tool_hint_max_length: 40,
               },
               model_presets: [

webui/src/tests/settings-view.test.tsx

@@ -30,8 +30,6 @@ function settingsPayload(): SettingsPayload {
       temperature: 0.1,
       reasoning_effort: null,
       timezone: "UTC",
-      bot_name: "nanobot",
-      bot_icon: "nb",
       tool_hint_max_length: 40,
     },
     model_presets: [{

webui/src/tests/thread-shell.test.tsx

@@ -309,8 +309,6 @@ function modelSettings(model: string, provider: string): SettingsPayload {
       temperature: 0.7,
       reasoning_effort: null,
       timezone: "UTC",
-      bot_name: "nanobot",
-      bot_icon: "",
       tool_hint_max_length: 40,
     },
     model_presets: [{