refactor(settings): remove AI Enhancement section and related components

- Deleted AIEnhancementSection and its associated files from the settings view.
- Updated SettingsView to remove references to AI enhancement functionality.
- Cleaned up navigation and feature defaults sections by removing unused validation model references.

This refactor streamlines the settings view by eliminating the AI enhancement feature, which is no longer needed.

apps/ui/src/components/views/settings-view.tsx

@@ -9,7 +9,6 @@ import { KeyboardMapDialog } from './settings-view/components/keyboard-map-dialo
 import { DeleteProjectDialog } from './settings-view/components/delete-project-dialog';
 import { SettingsNavigation } from './settings-view/components/settings-navigation';
 import { ApiKeysSection } from './settings-view/api-keys/api-keys-section';
-import { AIEnhancementSection } from './settings-view/ai-enhancement';
 import { PhaseModelsSection } from './settings-view/phase-models';
 import { AppearanceSection } from './settings-view/appearance/appearance-section';
 import { TerminalSection } from './settings-view/terminal/terminal-section';
@@ -47,8 +46,6 @@ export function SettingsView() {
     defaultAIProfileId,
     setDefaultAIProfileId,
     aiProfiles,
-    validationModel,
-    setValidationModel,
     autoLoadClaudeMd,
     setAutoLoadClaudeMd,
     enableSandboxMode,
@@ -105,8 +102,6 @@ export function SettingsView() {
             onPromptCustomizationChange={setPromptCustomization}
           />
         );
-      case 'ai-enhancement':
-        return <AIEnhancementSection />;
       case 'phase-models':
         return <PhaseModelsSection />;
       case 'appearance':
@@ -138,7 +133,6 @@ export function SettingsView() {
             defaultRequirePlanApproval={defaultRequirePlanApproval}
             defaultAIProfileId={defaultAIProfileId}
             aiProfiles={aiProfiles}
-            validationModel={validationModel}
             onShowProfilesOnlyChange={setShowProfilesOnly}
             onDefaultSkipTestsChange={setDefaultSkipTests}
             onEnableDependencyBlockingChange={setEnableDependencyBlocking}
@@ -146,7 +140,6 @@ export function SettingsView() {
             onDefaultPlanningModeChange={setDefaultPlanningMode}
             onDefaultRequirePlanApprovalChange={setDefaultRequirePlanApproval}
             onDefaultAIProfileIdChange={setDefaultAIProfileId}
-            onValidationModelChange={setValidationModel}
           />
         );
       case 'danger':

apps/ui/src/components/views/settings-view/ai-enhancement/ai-enhancement-section.tsx

@@ -1,91 +0,0 @@
-import { Label } from '@/components/ui/label';
-import { Sparkles } from 'lucide-react';
-import { cn } from '@/lib/utils';
-import { useAppStore } from '@/store/app-store';
-import { CLAUDE_MODELS } from '@/components/views/board-view/shared/model-constants';
-
-export function AIEnhancementSection() {
-  const { enhancementModel, setEnhancementModel } = useAppStore();
-
-  return (
-    <div
-      className={cn(
-        'rounded-2xl overflow-hidden',
-        'border border-border/50',
-        'bg-gradient-to-br from-card/90 via-card/70 to-card/80 backdrop-blur-xl',
-        'shadow-sm shadow-black/5'
-      )}
-    >
-      <div className="p-6 border-b border-border/50 bg-gradient-to-r from-transparent via-accent/5 to-transparent">
-        <div className="flex items-center gap-3 mb-2">
-          <div className="w-9 h-9 rounded-xl bg-gradient-to-br from-brand-500/20 to-brand-600/10 flex items-center justify-center border border-brand-500/20">
-            <Sparkles className="w-5 h-5 text-brand-500" />
-          </div>
-          <h2 className="text-lg font-semibold text-foreground tracking-tight">AI Enhancement</h2>
-        </div>
-        <p className="text-sm text-muted-foreground/80 ml-12">
-          Choose the model used when enhancing feature descriptions.
-        </p>
-      </div>
-      <div className="p-6 space-y-4">
-        <div className="space-y-4">
-          <Label className="text-foreground font-medium">Enhancement Model</Label>
-          <div className="grid grid-cols-1 md:grid-cols-3 gap-3">
-            {CLAUDE_MODELS.map(({ id, label, description, badge }) => {
-              const isActive = enhancementModel === id;
-              return (
-                <button
-                  key={id}
-                  onClick={() => setEnhancementModel(id)}
-                  className={cn(
-                    'group flex flex-col items-start gap-2 px-4 py-4 rounded-xl text-left',
-                    'transition-all duration-200 ease-out',
-                    isActive
-                      ? [
-                          'bg-gradient-to-br from-brand-500/15 to-brand-600/10',
-                          'border-2 border-brand-500/40',
-                          'text-foreground',
-                          'shadow-md shadow-brand-500/10',
-                        ]
-                      : [
-                          'bg-accent/30 hover:bg-accent/50',
-                          'border border-border/50 hover:border-border',
-                          'text-muted-foreground hover:text-foreground',
-                          'hover:shadow-sm',
-                        ],
-                    'hover:scale-[1.02] active:scale-[0.98]'
-                  )}
-                  data-testid={`enhancement-model-${id}`}
-                >
-                  <div className="flex items-center gap-2 w-full">
-                    <span
-                      className={cn(
-                        'font-medium text-sm',
-                        isActive ? 'text-foreground' : 'group-hover:text-foreground'
-                      )}
-                    >
-                      {label}
-                    </span>
-                    {badge && (
-                      <span
-                        className={cn(
-                          'ml-auto text-xs px-2 py-0.5 rounded-full',
-                          isActive
-                            ? 'bg-brand-500/20 text-brand-500'
-                            : 'bg-accent text-muted-foreground'
-                        )}
-                      >
-                        {badge}
-                      </span>
-                    )}
-                  </div>
-                  <span className="text-xs text-muted-foreground/80">{description}</span>
-                </button>
-              );
-            })}
-          </div>
-        </div>
-      </div>
-    </div>
-  );
-}

apps/ui/src/components/views/settings-view/ai-enhancement/index.ts

@@ -1 +0,0 @@
-export { AIEnhancementSection } from './ai-enhancement-section';

apps/ui/src/components/views/settings-view/config/navigation.ts

@@ -8,7 +8,6 @@ import {
   Volume2,
   FlaskConical,
   Trash2,
-  Sparkles,
   Workflow,
   Plug,
   MessageSquareText,
@@ -27,7 +26,6 @@ export const NAV_ITEMS: NavigationItem[] = [
   { id: 'providers', label: 'AI Providers', icon: Bot },
   { id: 'mcp-servers', label: 'MCP Servers', icon: Plug },
   { id: 'prompts', label: 'Prompt Customization', icon: MessageSquareText },
-  { id: 'ai-enhancement', label: 'AI Enhancement', icon: Sparkles },
   { id: 'phase-models', label: 'Phase Models', icon: Workflow },
   { id: 'appearance', label: 'Appearance', icon: Palette },
   { id: 'terminal', label: 'Terminal', icon: SquareTerminal },

apps/ui/src/components/views/settings-view/feature-defaults/feature-defaults-section.tsx

@@ -12,7 +12,6 @@ import {
   ScrollText,
   ShieldCheck,
   User,
-  Sparkles,
 } from 'lucide-react';
 import { cn } from '@/lib/utils';
 import {
@@ -23,7 +22,6 @@ import {
   SelectValue,
 } from '@/components/ui/select';
 import type { AIProfile } from '@/store/app-store';
-import type { ModelAlias } from '@automaker/types';
 
 type PlanningMode = 'skip' | 'lite' | 'spec' | 'full';
 
@@ -36,7 +34,6 @@ interface FeatureDefaultsSectionProps {
   defaultRequirePlanApproval: boolean;
   defaultAIProfileId: string | null;
   aiProfiles: AIProfile[];
-  validationModel: ModelAlias;
   onShowProfilesOnlyChange: (value: boolean) => void;
   onDefaultSkipTestsChange: (value: boolean) => void;
   onEnableDependencyBlockingChange: (value: boolean) => void;
@@ -44,7 +41,6 @@ interface FeatureDefaultsSectionProps {
   onDefaultPlanningModeChange: (value: PlanningMode) => void;
   onDefaultRequirePlanApprovalChange: (value: boolean) => void;
   onDefaultAIProfileIdChange: (value: string | null) => void;
-  onValidationModelChange: (value: ModelAlias) => void;
 }
 
 export function FeatureDefaultsSection({
@@ -56,7 +52,6 @@ export function FeatureDefaultsSection({
   defaultRequirePlanApproval,
   defaultAIProfileId,
   aiProfiles,
-  validationModel,
   onShowProfilesOnlyChange,
   onDefaultSkipTestsChange,
   onEnableDependencyBlockingChange,
@@ -64,7 +59,6 @@ export function FeatureDefaultsSection({
   onDefaultPlanningModeChange,
   onDefaultRequirePlanApprovalChange,
   onDefaultAIProfileIdChange,
-  onValidationModelChange,
 }: FeatureDefaultsSectionProps) {
   // Find the selected profile name for display
   const selectedProfile = defaultAIProfileId
@@ -233,45 +227,6 @@ export function FeatureDefaultsSection({
         {/* Separator */}
         <div className="border-t border-border/30" />
 
-        {/* Issue Validation Model */}
-        <div className="group flex items-start space-x-3 p-3 rounded-xl hover:bg-accent/30 transition-colors duration-200 -mx-3">
-          <div className="w-10 h-10 mt-0.5 rounded-xl flex items-center justify-center shrink-0 bg-purple-500/10">
-            <Sparkles className="w-5 h-5 text-purple-500" />
-          </div>
-          <div className="flex-1 space-y-2">
-            <div className="flex items-center justify-between">
-              <Label className="text-foreground font-medium">Issue Validation Model</Label>
-              <Select
-                value={validationModel}
-                onValueChange={(v: string) => onValidationModelChange(v as ModelAlias)}
-              >
-                <SelectTrigger className="w-[140px] h-8" data-testid="validation-model-select">
-                  <SelectValue />
-                </SelectTrigger>
-                <SelectContent>
-                  <SelectItem value="opus">
-                    <span>Opus</span>
-                    <span className="text-[10px] text-muted-foreground ml-1">(Default)</span>
-                  </SelectItem>
-                  <SelectItem value="sonnet">
-                    <span>Sonnet</span>
-                  </SelectItem>
-                  <SelectItem value="haiku">
-                    <span>Haiku</span>
-                  </SelectItem>
-                </SelectContent>
-              </Select>
-            </div>
-            <p className="text-xs text-muted-foreground/80 leading-relaxed">
-              Model used for validating GitHub issues. Opus provides the most thorough analysis,
-              while Haiku is faster and more cost-effective.
-            </p>
-          </div>
-        </div>
-
-        {/* Separator */}
-        <div className="border-t border-border/30" />
-
         {/* Profiles Only Setting */}
         <div className="group flex items-start space-x-3 p-3 rounded-xl hover:bg-accent/30 transition-colors duration-200 -mx-3">
           <Checkbox

apps/ui/src/components/views/settings-view/hooks/use-settings-view.ts

@@ -6,7 +6,6 @@ export type SettingsViewId =
   | 'providers'
   | 'mcp-servers'
   | 'prompts'
-  | 'ai-enhancement'
   | 'phase-models'
   | 'appearance'
   | 'terminal'