chore: Fix lint warnings in SetupWizard and add AI API docs

- Fixed unused variables in wizard components
- Fixed invalid aiEnabled field in FeaturesStep (AI uses separate API)
- Added AI endpoints section to API.md

docs/API.md

@@ -140,6 +140,37 @@ Initiate OIDC login flow.
 
 ---
 
+## 🤖 Pulse AI *(New in 5.0)*
+
+### Get AI Settings
+`GET /api/settings/ai`
+Returns current AI configuration (providers, models, patrol status).
+
+### Update AI Settings
+`PUT /api/settings/ai`
+Configure AI providers, API keys, and preferences.
+
+### Chat
+`POST /api/ai/chat`
+Send a message to the AI assistant.
+```json
+{ "message": "What VMs are using the most CPU?", "context": ["vm-100", "vm-101"] }
+```
+
+### Patrol Status
+`GET /api/ai/patrol/status`
+Get current patrol status and recent findings.
+
+### Patrol Findings
+`GET /api/ai/patrol/findings`
+List all patrol findings with severity and recommendations.
+
+### Cost Tracking
+`GET /api/ai/cost?period=30d`
+Get AI usage statistics and costs.
+
+---
+
 ## 🤖 Agent Endpoints
 
 ### Unified Agent (Recommended)

frontend-modern/src/components/SetupWizard/SetupWizard.tsx

@@ -1,4 +1,4 @@
-import { Component, createSignal, Show, onMount } from 'solid-js';
+import { Component, createSignal, Show } from 'solid-js';
 import { WelcomeStep } from './steps/WelcomeStep';
 import { SecurityStep } from './steps/SecurityStep';
 import { ConnectStep } from './steps/ConnectStep';

frontend-modern/src/components/SetupWizard/steps/ConnectStep.tsx

@@ -28,7 +28,7 @@ export const ConnectStep: Component<ConnectStepProps> = (props) => {
 
     // Manual form fields
     const [host, setHost] = createSignal('');
-    const [port, setPort] = createSignal('8006');
+    const [port, _setPort] = createSignal('8006');
     const [tokenId, setTokenId] = createSignal('');
     const [tokenSecret, setTokenSecret] = createSignal('');
 
@@ -69,7 +69,7 @@ export const ConnectStep: Component<ConnectStepProps> = (props) => {
             if (discoveredNodes().length === 0) {
                 showSuccess('Scan complete - no nodes found. Try manual setup.');
             }
-        } catch (error) {
+        } catch (_error) {
             showError('Discovery failed. Try manual setup.');
         } finally {
             setIsScanning(false);

frontend-modern/src/components/SetupWizard/steps/FeaturesStep.tsx

@@ -40,9 +40,9 @@ export const FeaturesStep: Component<FeaturesStepProps> = (props) => {
         setIsSaving(true);
 
         try {
-            // Save feature preferences
+            // Only save auto-update setting through SystemConfig
+            // AI settings are configured separately via Settings → AI
             await SettingsAPI.updateSystemSettings({
-                aiEnabled: aiEnabled(),
                 autoUpdateEnabled: autoUpdates(),
             });
 
@@ -53,7 +53,7 @@ export const FeaturesStep: Component<FeaturesStepProps> = (props) => {
 
             showSuccess('Preferences saved!');
             props.onNext();
-        } catch (error) {
+        } catch (_error) {
             // Continue anyway - settings can be changed later
             props.onNext();
         } finally {
@@ -73,8 +73,8 @@ export const FeaturesStep: Component<FeaturesStepProps> = (props) => {
                     <button
                         onClick={() => feature.setEnabled(!feature.enabled())}
                         class={`w-full p-4 rounded-xl border transition-all text-left flex items-start gap-4 ${feature.enabled()
-                                ? 'bg-blue-500/20 border-blue-400/40'
+                            ? 'bg-blue-500/20 border-blue-400/40'
-                                : 'bg-white/5 border-white/10 hover:bg-white/10'
+                            : 'bg-white/5 border-white/10 hover:bg-white/10'
                             }`}
                     >
                         <div class="text-3xl">{feature.icon}</div>

frontend-modern/src/components/SetupWizard/steps/WelcomeStep.tsx

@@ -58,7 +58,7 @@ export const WelcomeStep: Component<WelcomeStepProps> = (props) => {
             props.setIsUnlocked(true);
             showSuccess('Token verified!');
             props.onNext();
-        } catch (error) {
+        } catch (_error) {
             showError('Invalid bootstrap token. Please check and try again.');
         } finally {
             setIsValidating(false);