Add bot disable flow

frontend/src/components/SettingsModal.tsx

@@ -246,6 +246,7 @@ export function SettingsModal(props: SettingsModalProps) {
           {isSectionVisible('bot') && appSettings && (
             <SettingsBotSection
               appSettings={appSettings}
+              health={health}
               isMobileLayout={isMobileLayout}
               onSaveAppSettings={onSaveAppSettings}
               className={sectionContentClass}

frontend/src/components/settings/SettingsBotSection.tsx

@@ -4,7 +4,7 @@ import { Button } from '../ui/button';
 import { Separator } from '../ui/separator';
 import { toast } from '../ui/sonner';
 import { handleKeyboardActivate } from '../../utils/a11y';
-import type { AppSettings, AppSettingsUpdate, BotConfig } from '../../types';
+import type { AppSettings, AppSettingsUpdate, BotConfig, HealthStatus } from '../../types';
 
 const BotCodeEditor = lazy(() =>
   import('../BotCodeEditor').then((m) => ({ default: m.BotCodeEditor }))
@@ -50,11 +50,13 @@ const DEFAULT_BOT_CODE = `def bot(
 
 export function SettingsBotSection({
   appSettings,
+  health,
   isMobileLayout,
   onSaveAppSettings,
   className,
 }: {
   appSettings: AppSettings;
+  health: HealthStatus | null;
   isMobileLayout: boolean;
   onSaveAppSettings: (update: AppSettingsUpdate) => Promise<void>;
   className?: string;
@@ -139,6 +141,14 @@ export function SettingsBotSection({
     setBots(bots.map((b) => (b.id === botId ? { ...b, code: DEFAULT_BOT_CODE } : b)));
   };
 
+  if (health?.bots_disabled) {
+    return (
+      <div className={className}>
+        <p className="text-sm text-muted-foreground">Bot system disabled by server startup flag.</p>
+      </div>
+    );
+  }
+
   return (
     <div className={className}>
       <div className="p-3 bg-red-500/10 border border-red-500/30 rounded-md">

frontend/src/test/settingsModal.test.tsx

@@ -40,6 +40,7 @@ const baseHealth: HealthStatus = {
   oldest_undecrypted_timestamp: null,
   mqtt_status: null,
   community_mqtt_status: null,
+  bots_disabled: false,
 };
 
 const baseSettings: AppSettings = {

frontend/src/types.ts

@@ -31,6 +31,7 @@ export interface HealthStatus {
   oldest_undecrypted_timestamp: number | null;
   mqtt_status: string | null;
   community_mqtt_status: string | null;
+  bots_disabled: boolean;
 }
 
 export interface MaintenanceResult {