Add extensible notification providers + UI/API

Introduce a provider-based notification system and wire it through the API and admin UI. Added INotificationProvider + notification service implementation and providers (apprise, discord, ntfy, pushover), plus a GET /api/admin/notifications/providers endpoint to expose provider metadata. Refactored code to use provider type strings (removed enum coupling), updated masking/encryption calls, and simplified the test notification endpoint to accept backendId or type+config and call sendToBackend directly.

UI: NotificationsTab now fetches provider metadata and renders provider cards and dynamic config forms (fields driven by provider metadata). Added config field rendering, improved backend cards, and edit/delete actions.

APIs: New providers route, updated admin notification CRUD routes to validate provider types dynamically, updated test route schema. Added download-client categories POST API to fetch categories from clients and wired postImportCategory handling in download-client routes.

Other notable changes: BookDate now fetches Claude models dynamically from Anthropic's Models API; added paginated model fetch helper. Added ALLOW_WEAK_PASSWORD flag exposure to auth providers and password change logic. Doc updates and various tests added/updated. File-organization doc clarifies EPERM fix using stream-based copy.

src/app/admin/settings/tabs/NotificationsTab/NotificationsTab.tsx

@@ -6,6 +6,25 @@ import { fetchWithAuth } from '@/lib/utils/api';
 
 const logger = RMABLogger.create('NotificationsTab');
 
+interface ProviderConfigField {
+  name: string;
+  label: string;
+  type: 'text' | 'password' | 'select' | 'number';
+  required: boolean;
+  placeholder?: string;
+  defaultValue?: string | number;
+  options?: { label: string; value: string | number }[];
+}
+
+interface ProviderMetadata {
+  type: string;
+  displayName: string;
+  description: string;
+  iconLabel: string;
+  iconColor: string;
+  configFields: ProviderConfigField[];
+}
+
 interface NotificationBackend {
   id: string;
   type: string;
@@ -24,15 +43,6 @@ interface ModalState {
   backend?: NotificationBackend;
 }
 
-const typeColors: Record<string, string> = {
-  discord: 'bg-indigo-500',
-  pushover: 'bg-blue-500',
-  email: 'bg-green-500',
-  slack: 'bg-purple-500',
-  telegram: 'bg-sky-500',
-  webhook: 'bg-gray-500',
-};
-
 const eventLabels: Record<string, string> = {
   request_pending_approval: 'Request Pending Approval',
   request_approved: 'Request Approved',
@@ -42,6 +52,7 @@ const eventLabels: Record<string, string> = {
 
 export function NotificationsTab() {
   const [backends, setBackends] = useState<NotificationBackend[]>([]);
+  const [providerMetadata, setProviderMetadata] = useState<ProviderMetadata[]>([]);
   const [loading, setLoading] = useState(true);
   const [modalState, setModalState] = useState<ModalState>({
     isOpen: false,
@@ -59,8 +70,23 @@ export function NotificationsTab() {
 
   useEffect(() => {
     fetchBackends();
+    fetchProviderMetadata();
   }, []);
 
+  const fetchProviderMetadata = async () => {
+    try {
+      const response = await fetchWithAuth('/api/admin/notifications/providers');
+      if (response.ok) {
+        const data = await response.json();
+        if (data.success) {
+          setProviderMetadata(data.providers);
+        }
+      }
+    } catch (error) {
+      logger.error('Failed to fetch provider metadata', { error: error instanceof Error ? error.message : String(error) });
+    }
+  };
+
   const fetchBackends = async () => {
     try {
       setLoading(true);
@@ -83,11 +109,23 @@ export function NotificationsTab() {
     }
   };
 
+  const getMetadataForType = (type: string): ProviderMetadata | undefined => {
+    return providerMetadata.find((p) => p.type === type);
+  };
+
   const openAddModal = (type: string) => {
+    const meta = getMetadataForType(type);
+    const defaultConfig: Record<string, any> = {};
+    if (meta) {
+      for (const field of meta.configFields) {
+        defaultConfig[field.name] = field.defaultValue ?? '';
+      }
+    }
+
     setModalState({ isOpen: true, mode: 'add', selectedType: type });
     setFormData({
-      name: `${type.charAt(0).toUpperCase() + type.slice(1)} Notifications`,
-      config: type === 'discord' ? { webhookUrl: '', username: 'ReadMeABook', avatarUrl: '' } : { userKey: '', appToken: '', device: '', priority: 0 },
+      name: `${meta?.displayName ?? type} Notifications`,
+      config: defaultConfig,
       events: ['request_available', 'request_error'],
       enabled: true,
     });
@@ -193,6 +231,49 @@ export function NotificationsTab() {
     }
   };
 
+  const renderConfigField = (field: ProviderConfigField) => {
+    if (field.type === 'select' && field.options) {
+      return (
+        <div key={field.name}>
+          <label className="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-1">
+            {field.label}{field.required ? ' *' : ''}
+          </label>
+          <select
+            value={formData.config[field.name] ?? field.defaultValue ?? ''}
+            onChange={(e) => {
+              const value = field.options?.some((o) => typeof o.value === 'number')
+                ? Number(e.target.value)
+                : e.target.value;
+              setFormData({ ...formData, config: { ...formData.config, [field.name]: value } });
+            }}
+            className="w-full px-3 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white"
+          >
+            {field.options.map((opt) => (
+              <option key={String(opt.value)} value={opt.value}>{opt.label}</option>
+            ))}
+          </select>
+        </div>
+      );
+    }
+
+    return (
+      <div key={field.name}>
+        <label className="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-1">
+          {field.label}{field.required ? ' *' : field.label.includes('optional') ? '' : ' (optional)'}
+        </label>
+        <input
+          type={field.type === 'password' ? 'password' : 'text'}
+          value={formData.config[field.name] ?? ''}
+          onChange={(e) => setFormData({ ...formData, config: { ...formData.config, [field.name]: e.target.value } })}
+          className="w-full px-3 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white"
+          placeholder={field.placeholder}
+        />
+      </div>
+    );
+  };
+
+  const currentMeta = modalState.selectedType ? getMetadataForType(modalState.selectedType) : undefined;
+
   return (
     <div className="space-y-6">
       {/* Header */}
@@ -206,32 +287,22 @@ export function NotificationsTab() {
       {/* Type Selector */}
       <div>
         <h3 className="text-lg font-semibold text-gray-900 dark:text-white mb-4">Add Notification Backend</h3>
-        <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
-          <button
-            onClick={() => openAddModal('discord')}
-            className="flex items-center p-4 bg-white dark:bg-gray-800 rounded-lg border-2 border-gray-200 dark:border-gray-700 hover:border-gray-300 dark:hover:border-gray-600 transition-colors"
-          >
-            <div className="flex-shrink-0 w-12 h-12 bg-indigo-500 rounded-lg flex items-center justify-center text-white font-bold text-2xl">
-              D
-            </div>
-            <div className="ml-4 text-left">
-              <div className="font-semibold text-gray-900 dark:text-white">Discord</div>
-              <div className="text-sm text-gray-600 dark:text-gray-400">Send notifications via Discord webhook</div>
-            </div>
-          </button>
-
-          <button
-            onClick={() => openAddModal('pushover')}
-            className="flex items-center p-4 bg-white dark:bg-gray-800 rounded-lg border-2 border-gray-200 dark:border-gray-700 hover:border-gray-300 dark:hover:border-gray-600 transition-colors"
-          >
-            <div className="flex-shrink-0 w-12 h-12 bg-blue-500 rounded-lg flex items-center justify-center text-white font-bold text-2xl">
-              P
-            </div>
-            <div className="ml-4 text-left">
-              <div className="font-semibold text-gray-900 dark:text-white">Pushover</div>
-              <div className="text-sm text-gray-600 dark:text-gray-400">Send notifications via Pushover API</div>
-            </div>
-          </button>
+        <div className="grid grid-cols-1 md:grid-cols-3 gap-4">
+          {providerMetadata.map((meta) => (
+            <button
+              key={meta.type}
+              onClick={() => openAddModal(meta.type)}
+              className="flex items-center p-4 bg-white dark:bg-gray-800 rounded-lg border-2 border-gray-200 dark:border-gray-700 hover:border-gray-300 dark:hover:border-gray-600 transition-colors"
+            >
+              <div className={`flex-shrink-0 w-12 h-12 ${meta.iconColor} rounded-lg flex items-center justify-center text-white font-bold text-2xl`}>
+                {meta.iconLabel}
+              </div>
+              <div className="ml-4 text-left">
+                <div className="font-semibold text-gray-900 dark:text-white">{meta.displayName}</div>
+                <div className="text-sm text-gray-600 dark:text-gray-400">{meta.description}</div>
+              </div>
+            </button>
+          ))}
         </div>
       </div>
 
@@ -244,43 +315,46 @@ export function NotificationsTab() {
           <p className="text-gray-600 dark:text-gray-400">No notification backends configured.</p>
         ) : (
           <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
-            {backends.map((backend) => (
-              <div key={backend.id} className="bg-white dark:bg-gray-800 rounded-lg shadow-md border border-gray-200 dark:border-gray-700 p-4 hover:shadow-lg transition-shadow">
-                <div className="flex items-start justify-between mb-3">
-                  <div className="flex items-center space-x-3">
-                    <div className={`w-10 h-10 ${typeColors[backend.type]} rounded-lg flex items-center justify-center text-white font-bold`}>
-                      {backend.type.charAt(0).toUpperCase()}
-                    </div>
-                    <div>
-                      <div className="font-semibold text-gray-900 dark:text-white truncate">{backend.name}</div>
-                      <div className="text-xs text-gray-500 dark:text-gray-400 capitalize">{backend.type}</div>
+            {backends.map((backend) => {
+              const meta = getMetadataForType(backend.type);
+              return (
+                <div key={backend.id} className="bg-white dark:bg-gray-800 rounded-lg shadow-md border border-gray-200 dark:border-gray-700 p-4 hover:shadow-lg transition-shadow">
+                  <div className="flex items-start justify-between mb-3">
+                    <div className="flex items-center space-x-3">
+                      <div className={`w-10 h-10 ${meta?.iconColor ?? 'bg-gray-500'} rounded-lg flex items-center justify-center text-white font-bold`}>
+                        {meta?.iconLabel ?? backend.type.charAt(0).toUpperCase()}
+                      </div>
+                      <div>
+                        <div className="font-semibold text-gray-900 dark:text-white truncate">{backend.name}</div>
+                        <div className="text-xs text-gray-500 dark:text-gray-400">{meta?.displayName ?? backend.type}</div>
+                      </div>
                     </div>
                   </div>
-                </div>
-                <div className="space-y-2 mb-3">
-                  <div className={`inline-block px-2 py-1 rounded text-xs ${backend.enabled ? 'bg-green-100 text-green-800 dark:bg-green-900 dark:text-green-200' : 'bg-gray-100 text-gray-800 dark:bg-gray-700 dark:text-gray-300'}`}>
-                    {backend.enabled ? 'Enabled' : 'Disabled'}
+                  <div className="space-y-2 mb-3">
+                    <div className={`inline-block px-2 py-1 rounded text-xs ${backend.enabled ? 'bg-green-100 text-green-800 dark:bg-green-900 dark:text-green-200' : 'bg-gray-100 text-gray-800 dark:bg-gray-700 dark:text-gray-300'}`}>
+                      {backend.enabled ? 'Enabled' : 'Disabled'}
+                    </div>
+                    <div className="text-sm text-gray-600 dark:text-gray-400">
+                      {backend.events.length} {backend.events.length === 1 ? 'event' : 'events'} subscribed
+                    </div>
                   </div>
-                  <div className="text-sm text-gray-600 dark:text-gray-400">
-                    {backend.events.length} {backend.events.length === 1 ? 'event' : 'events'} subscribed
+                  <div className="flex space-x-2">
+                    <button
+                      onClick={() => openEditModal(backend)}
+                      className="flex-1 px-3 py-1.5 text-sm bg-blue-600 hover:bg-blue-700 text-white rounded transition-colors"
+                    >
+                      Edit
+                    </button>
+                    <button
+                      onClick={() => handleDelete(backend.id)}
+                      className="flex-1 px-3 py-1.5 text-sm bg-red-600 hover:bg-red-700 text-white rounded transition-colors"
+                    >
+                      Delete
+                    </button>
                   </div>
                 </div>
-                <div className="flex space-x-2">
-                  <button
-                    onClick={() => openEditModal(backend)}
-                    className="flex-1 px-3 py-1.5 text-sm bg-blue-600 hover:bg-blue-700 text-white rounded transition-colors"
-                  >
-                    Edit
-                  </button>
-                  <button
-                    onClick={() => handleDelete(backend.id)}
-                    className="flex-1 px-3 py-1.5 text-sm bg-red-600 hover:bg-red-700 text-white rounded transition-colors"
-                  >
-                    Delete
-                  </button>
-                </div>
-              </div>
-            ))}
+              );
+            })}
           </div>
         )}
       </div>
@@ -292,7 +366,7 @@ export function NotificationsTab() {
             <div className="p-6">
               <div className="flex items-center justify-between mb-6">
                 <h3 className="text-xl font-bold text-gray-900 dark:text-white">
-                  {modalState.mode === 'add' ? 'Add' : 'Edit'} {modalState.selectedType.charAt(0).toUpperCase() + modalState.selectedType.slice(1)} Notification
+                  {modalState.mode === 'add' ? 'Add' : 'Edit'} {currentMeta?.displayName ?? modalState.selectedType} Notification
                 </h3>
                 <button onClick={closeModal} className="text-gray-400 hover:text-gray-600 dark:hover:text-gray-200">
                   <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
@@ -314,70 +388,8 @@ export function NotificationsTab() {
                   />
                 </div>
 
-                {/* Config Fields */}
-                {modalState.selectedType === 'discord' && (
-                  <>
-                    <div>
-                      <label className="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-1">Webhook URL *</label>
-                      <input
-                        type="text"
-                        value={formData.config.webhookUrl}
-                        onChange={(e) => setFormData({ ...formData, config: { ...formData.config, webhookUrl: e.target.value } })}
-                        className="w-full px-3 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white"
-                        placeholder="https://discord.com/api/webhooks/..."
-                      />
-                    </div>
-                    <div>
-                      <label className="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-1">Username (optional)</label>
-                      <input
-                        type="text"
-                        value={formData.config.username}
-                        onChange={(e) => setFormData({ ...formData, config: { ...formData.config, username: e.target.value } })}
-                        className="w-full px-3 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white"
-                        placeholder="ReadMeABook"
-                      />
-                    </div>
-                  </>
-                )}
-
-                {modalState.selectedType === 'pushover' && (
-                  <>
-                    <div>
-                      <label className="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-1">User Key *</label>
-                      <input
-                        type="text"
-                        value={formData.config.userKey}
-                        onChange={(e) => setFormData({ ...formData, config: { ...formData.config, userKey: e.target.value } })}
-                        className="w-full px-3 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white"
-                        placeholder="Your Pushover user key"
-                      />
-                    </div>
-                    <div>
-                      <label className="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-1">App Token *</label>
-                      <input
-                        type="text"
-                        value={formData.config.appToken}
-                        onChange={(e) => setFormData({ ...formData, config: { ...formData.config, appToken: e.target.value } })}
-                        className="w-full px-3 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white"
-                        placeholder="Your Pushover app token"
-                      />
-                    </div>
-                    <div>
-                      <label className="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-1">Priority</label>
-                      <select
-                        value={formData.config.priority}
-                        onChange={(e) => setFormData({ ...formData, config: { ...formData.config, priority: Number(e.target.value) } })}
-                        className="w-full px-3 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white"
-                      >
-                        <option value="-2">Lowest</option>
-                        <option value="-1">Low</option>
-                        <option value="0">Normal</option>
-                        <option value="1">High</option>
-                        <option value="2">Emergency</option>
-                      </select>
-                    </div>
-                  </>
-                )}
+                {/* Dynamic Config Fields */}
+                {currentMeta?.configFields.map((field) => renderConfigField(field))}
 
                 {/* Events */}
                 <div>

src/app/api/admin/notifications/[id]/route.ts

@@ -6,7 +6,7 @@
 import { NextRequest, NextResponse } from 'next/server';
 import { requireAuth, requireAdmin, AuthenticatedRequest } from '@/lib/middleware/auth';
 import { prisma } from '@/lib/db';
-import { getNotificationService, NotificationBackendType } from '@/lib/services/notification.service';
+import { getNotificationService } from '@/lib/services/notification';
 import { RMABLogger } from '@/lib/utils/logger';
 import { z } from 'zod';
 
@@ -50,7 +50,7 @@ export async function GET(
           success: true,
           backend: {
             ...backend,
-            config: notificationService.maskConfig(backend.type as NotificationBackendType, backend.config),
+            config: notificationService.maskConfig(backend.type, backend.config),
           },
         });
       } catch (error) {
@@ -114,7 +114,7 @@ export async function PUT(
           });
 
           // Encrypt new/changed values
-          finalConfig = notificationService.encryptConfig(existing.type as NotificationBackendType, updatedConfig);
+          finalConfig = notificationService.encryptConfig(existing.type, updatedConfig);
         }
 
         // Update backend
@@ -139,7 +139,7 @@ export async function PUT(
           success: true,
           backend: {
             ...updated,
-            config: notificationService.maskConfig(updated.type as NotificationBackendType, updated.config),
+            config: notificationService.maskConfig(updated.type, updated.config),
           },
         });
       } catch (error) {

src/app/api/admin/notifications/providers/route.ts

@@ -0,0 +1,42 @@
+/**
+ * Component: Notification Providers Metadata API
+ * Documentation: documentation/backend/services/notifications.md
+ */
+
+import { NextRequest, NextResponse } from 'next/server';
+import { requireAuth, requireAdmin, AuthenticatedRequest } from '@/lib/middleware/auth';
+import { getAllProviderMetadata } from '@/lib/services/notification';
+import { RMABLogger } from '@/lib/utils/logger';
+
+const logger = RMABLogger.create('API.Admin.Notifications.Providers');
+
+/**
+ * GET /api/admin/notifications/providers
+ * Returns metadata for all registered notification providers
+ */
+export async function GET(request: NextRequest) {
+  return requireAuth(request, async (req: AuthenticatedRequest) => {
+    return requireAdmin(req, async () => {
+      try {
+        const providers = getAllProviderMetadata();
+
+        return NextResponse.json({
+          success: true,
+          providers,
+        });
+      } catch (error) {
+        logger.error('Failed to fetch provider metadata', {
+          error: error instanceof Error ? error.message : String(error),
+        });
+
+        return NextResponse.json(
+          {
+            error: 'FetchError',
+            message: 'Failed to fetch provider metadata',
+          },
+          { status: 500 }
+        );
+      }
+    });
+  });
+}

src/app/api/admin/notifications/route.ts

@@ -6,14 +6,14 @@
 import { NextRequest, NextResponse } from 'next/server';
 import { requireAuth, requireAdmin, AuthenticatedRequest } from '@/lib/middleware/auth';
 import { prisma } from '@/lib/db';
-import { getNotificationService, NotificationBackendType } from '@/lib/services/notification.service';
+import { getNotificationService, getRegisteredProviderTypes } from '@/lib/services/notification';
 import { RMABLogger } from '@/lib/utils/logger';
 import { z } from 'zod';
 
 const logger = RMABLogger.create('API.Admin.Notifications');
 
 const CreateBackendSchema = z.object({
-  type: z.enum(['discord', 'pushover', 'email', 'slack', 'telegram', 'webhook']),
+  type: z.string().refine((val) => getRegisteredProviderTypes().includes(val), { message: 'Unsupported notification provider type' }),
   name: z.string().min(1),
   config: z.record(z.any()),
   events: z.array(z.enum(['request_pending_approval', 'request_approved', 'request_available', 'request_error'])).min(1),
@@ -37,7 +37,7 @@ export async function GET(request: NextRequest) {
         // Mask sensitive config values
         const maskedBackends = backends.map((backend) => ({
           ...backend,
-          config: notificationService.maskConfig(backend.type as NotificationBackendType, backend.config),
+          config: notificationService.maskConfig(backend.type, backend.config),
         }));
 
         return NextResponse.json({

src/app/api/admin/notifications/test/route.ts

@@ -5,31 +5,17 @@
 
 import { NextRequest, NextResponse } from 'next/server';
 import { requireAuth, requireAdmin, AuthenticatedRequest } from '@/lib/middleware/auth';
-import { getNotificationService, NotificationBackendType, NotificationPayload } from '@/lib/services/notification.service';
+import { getNotificationService, getRegisteredProviderTypes, NotificationPayload } from '@/lib/services/notification';
 import { RMABLogger } from '@/lib/utils/logger';
 import { z } from 'zod';
 import { prisma } from '@/lib/db';
 
 const logger = RMABLogger.create('API.Admin.Notifications.Test');
 
-const TestNotificationSchema = z.discriminatedUnion('mode', [
-  // Test existing backend by ID (uses stored config)
-  z.object({
-    mode: z.literal('backend'),
-    backendId: z.string(),
-  }),
-  // Test new config before saving
-  z.object({
-    mode: z.literal('config'),
-    type: z.enum(['discord', 'pushover', 'email', 'slack', 'telegram', 'webhook']),
-    config: z.record(z.any()),
-  }),
-]);
-
-// Support legacy format without mode
-const LegacyTestNotificationSchema = z.object({
+// Flexible schema: supports both backendId and type+config formats
+const TestNotificationSchema = z.object({
   backendId: z.string().optional(),
-  type: z.enum(['discord', 'pushover', 'email', 'slack', 'telegram', 'webhook']).optional(),
+  type: z.string().refine((val) => getRegisteredProviderTypes().includes(val), { message: 'Unsupported notification provider type' }).optional(),
   config: z.record(z.any()).optional(),
 });
 
@@ -42,66 +28,37 @@ export async function POST(request: NextRequest) {
     return requireAdmin(req, async () => {
       try {
         const body = await request.json();
+        const parsed = TestNotificationSchema.parse(body);
 
-        // Support legacy format for backward compatibility
-        const legacyParsed = LegacyTestNotificationSchema.safeParse(body);
-
-        let type: NotificationBackendType;
+        let type: string;
         let encryptedConfig: any;
 
         const notificationService = getNotificationService();
 
-        if (legacyParsed.success) {
-          // Legacy format
-          if (legacyParsed.data.backendId) {
-            // Test existing backend
-            const backend = await prisma.notificationBackend.findUnique({
-              where: { id: legacyParsed.data.backendId },
-            });
+        if (parsed.backendId) {
+          // Test existing backend by ID (uses stored config)
+          const backend = await prisma.notificationBackend.findUnique({
+            where: { id: parsed.backendId },
+          });
 
-            if (!backend) {
-              return NextResponse.json(
-                { error: 'NotFound', message: 'Backend not found' },
-                { status: 404 }
-              );
-            }
-
-            type = backend.type as NotificationBackendType;
-            encryptedConfig = backend.config; // Already encrypted in DB
-          } else if (legacyParsed.data.type && legacyParsed.data.config) {
-            // Test new config
-            type = legacyParsed.data.type as NotificationBackendType;
-            encryptedConfig = notificationService.encryptConfig(type, legacyParsed.data.config);
-          } else {
+          if (!backend) {
             return NextResponse.json(
-              { error: 'ValidationError', message: 'Must provide either backendId or type+config' },
-              { status: 400 }
+              { error: 'NotFound', message: 'Backend not found' },
+              { status: 404 }
             );
           }
+
+          type = backend.type;
+          encryptedConfig = backend.config; // Already encrypted in DB
+        } else if (parsed.type && parsed.config) {
+          // Test new config before saving
+          type = parsed.type;
+          encryptedConfig = notificationService.encryptConfig(type, parsed.config);
         } else {
-          // New format with discriminated union
-          const parsed = TestNotificationSchema.parse(body);
-
-          if (parsed.mode === 'backend') {
-            // Test existing backend
-            const backend = await prisma.notificationBackend.findUnique({
-              where: { id: parsed.backendId },
-            });
-
-            if (!backend) {
-              return NextResponse.json(
-                { error: 'NotFound', message: 'Backend not found' },
-                { status: 404 }
-              );
-            }
-
-            type = backend.type as NotificationBackendType;
-            encryptedConfig = backend.config; // Already encrypted in DB
-          } else {
-            // Test new config
-            type = parsed.type;
-            encryptedConfig = notificationService.encryptConfig(type, parsed.config);
-          }
+          return NextResponse.json(
+            { error: 'ValidationError', message: 'Must provide either backendId or type+config' },
+            { status: 400 }
+          );
         }
 
         // Create test payload
@@ -117,7 +74,7 @@ export async function POST(request: NextRequest) {
         // Send test notification synchronously (not via job queue)
         try {
           // Call sendToBackend directly
-          await (notificationService as any).sendToBackend(type, encryptedConfig, testPayload);
+          await notificationService.sendToBackend(type, encryptedConfig, testPayload);
 
           logger.info(`Test notification sent successfully for ${type}`, {
             adminId: req.user?.sub,

src/app/api/admin/settings/download-clients/[id]/route.ts

@@ -38,6 +38,7 @@ export async function PUT(
           localPath,
           category,
           customPath,
+          postImportCategory,
         } = body;
 
         const config = await getConfigService();
@@ -76,6 +77,7 @@ export async function PUT(
           localPath: localPath !== undefined ? localPath : existingClient.localPath,
           category: category !== undefined ? category : existingClient.category,
           customPath: customPath !== undefined ? (customPath || undefined) : existingClient.customPath,
+          postImportCategory: postImportCategory !== undefined ? (postImportCategory || undefined) : existingClient.postImportCategory,
         };
 
         // Validate path mapping if enabled

src/app/api/admin/settings/download-clients/categories/route.ts

@@ -0,0 +1,104 @@
+/**
+ * Component: Fetch Download Client Categories API
+ * Documentation: documentation/phase3/download-clients.md
+ */
+
+import { NextRequest, NextResponse } from 'next/server';
+import { requireAuth, requireAdmin, AuthenticatedRequest } from '@/lib/middleware/auth';
+import { getConfigService } from '@/lib/services/config.service';
+import { getDownloadClientManager, DownloadClientConfig } from '@/lib/services/download-client-manager.service';
+import { SUPPORTED_CLIENT_TYPES } from '@/lib/interfaces/download-client.interface';
+import { RMABLogger } from '@/lib/utils/logger';
+
+const logger = RMABLogger.create('API.Admin.Settings.DownloadClients.Categories');
+
+/**
+ * POST - Fetch categories from a download client
+ * Accepts same connection config as the test endpoint
+ */
+export async function POST(request: NextRequest) {
+  return requireAuth(request, async (req: AuthenticatedRequest) => {
+    return requireAdmin(req, async () => {
+      try {
+        const body = await request.json();
+        const {
+          clientId,
+          type,
+          name: clientName,
+          url,
+          username,
+          password,
+          disableSSLVerify,
+          remotePathMappingEnabled,
+          remotePath,
+          localPath,
+        } = body;
+
+        if (!SUPPORTED_CLIENT_TYPES.includes(type)) {
+          return NextResponse.json(
+            { error: `Invalid client type. Must be one of: ${SUPPORTED_CLIENT_TYPES.join(', ')}` },
+            { status: 400 }
+          );
+        }
+
+        if (!url) {
+          return NextResponse.json(
+            { error: 'URL is required' },
+            { status: 400 }
+          );
+        }
+
+        const config = await getConfigService();
+        const manager = getDownloadClientManager(config);
+
+        // If editing and password not provided, use stored password
+        let effectivePassword = password;
+        let effectiveUsername = username;
+
+        if (clientId && !password) {
+          const existingClients = await manager.getAllClients();
+          const existingClient = existingClients.find(c => c.id === clientId);
+
+          if (!existingClient) {
+            return NextResponse.json(
+              { error: 'Client not found' },
+              { status: 404 }
+            );
+          }
+
+          effectivePassword = existingClient.password;
+          if (!username && existingClient.username) {
+            effectiveUsername = existingClient.username;
+          }
+        }
+
+        const testConfig: DownloadClientConfig = {
+          id: 'categories-fetch',
+          type,
+          name: clientName || type,
+          enabled: true,
+          url,
+          username: effectiveUsername || '',
+          password: effectivePassword || '',
+          disableSSLVerify: disableSSLVerify || false,
+          remotePathMappingEnabled: remotePathMappingEnabled || false,
+          remotePath: remotePath || undefined,
+          localPath: localPath || undefined,
+          category: 'readmeabook',
+        };
+
+        const service = await manager.createClientFromConfig(testConfig);
+        const categories = await service.getCategories();
+
+        return NextResponse.json({ success: true, categories });
+      } catch (error) {
+        const message = error instanceof Error ? error.message : String(error);
+        logger.error('Failed to fetch categories', { error: message });
+        return NextResponse.json(
+          { success: false, error: message },
+          { status: 400 }
+        );
+      }
+    });
+  });
+}

src/app/api/admin/settings/download-clients/route.ts

@@ -63,6 +63,7 @@ export async function POST(request: NextRequest) {
           localPath,
           category,
           customPath,
+          postImportCategory,
         } = body;
 
         // Validate type
@@ -138,6 +139,7 @@ export async function POST(request: NextRequest) {
           localPath: localPath || undefined,
           category: category || 'readmeabook',
           customPath: customPath || undefined,
+          postImportCategory: postImportCategory || undefined,
         };
 
         // Test connection before saving

src/app/api/audiobooks/search-torrents/route.ts

@@ -86,7 +86,6 @@ export async function POST(request: NextRequest) {
 
       // Search Prowlarr for each group and combine results
       const prowlarr = await getProwlarrService();
-      const searchQuery = title; // Title only - cast wide net
       const allResults = [];
 
       for (let i = 0; i < groups.length; i++) {
@@ -94,7 +93,7 @@ export async function POST(request: NextRequest) {
         logger.debug(`Searching group ${i + 1}/${groups.length}: ${getGroupDescription(group)}`);
 
         try {
-          const groupResults = await prowlarr.search(searchQuery, {
+          const groupResults = await prowlarr.searchWithVariations(title, author, {
             categories: group.categories,
             indexerIds: group.indexerIds,
             maxResults: 100, // Limit per group

src/app/api/auth/change-password/route.ts

@@ -39,7 +39,8 @@ export async function POST(request: NextRequest) {
       }
 
       // Validate new password length
-      if (newPassword.length < 8) {
+      const allowWeakPassword = process.env.ALLOW_WEAK_PASSWORD === 'true';
+      if (!allowWeakPassword && newPassword.length < 8) {
         return NextResponse.json(
           {
             success: false,

src/app/api/auth/providers/route.ts

@@ -18,6 +18,9 @@ export async function GET() {
     // Check if local login is disabled via environment variable
     const localLoginDisabled = process.env.DISABLE_LOCAL_LOGIN === 'true';
 
+    // Check if weak passwords are allowed via environment variable
+    const allowWeakPassword = process.env.ALLOW_WEAK_PASSWORD === 'true';
+
     // Check if automation (Phase 3) is configured by checking for Prowlarr/indexer config
     const indexerType = await configService.get('indexer.type');
     const prowlarrUrl = await configService.get('indexer.prowlarr_url');
@@ -47,6 +50,7 @@ export async function GET() {
         hasLocalUsers,
         oidcProviderName: oidcEnabled ? oidcProviderName : null,
         localLoginDisabled,
+        allowWeakPassword,
         automationEnabled,
       });
     } else {
@@ -65,6 +69,7 @@ export async function GET() {
         hasLocalUsers,
         oidcProviderName: null,
         localLoginDisabled,
+        allowWeakPassword,
         automationEnabled,
       });
     }
@@ -72,6 +77,7 @@ export async function GET() {
     logger.error('Failed to fetch auth providers', { error: error instanceof Error ? error.message : String(error) });
     // Default to Plex mode if config can't be read
     const localLoginDisabled = process.env.DISABLE_LOCAL_LOGIN === 'true';
+    const allowWeakPassword = process.env.ALLOW_WEAK_PASSWORD === 'true';
     return NextResponse.json({
       backendMode: 'plex',
       providers: ['plex'],
@@ -79,6 +85,7 @@ export async function GET() {
       hasLocalUsers: false,
       oidcProviderName: null,
       localLoginDisabled,
+      allowWeakPassword,
       automationEnabled: false,
     });
   }

src/app/api/bookdate/test-connection/route.ts

@@ -9,6 +9,49 @@ import { RMABLogger } from '@/lib/utils/logger';
 
 const logger = RMABLogger.create('API.BookDate.TestConnection');
 
+// Fetch available Claude models from the Anthropic API
+async function fetchClaudeModels(apiKey: string): Promise<{ id: string; name: string }[]> {
+  const allModels: { id: string; name: string }[] = [];
+  let afterId: string | undefined;
+
+  // Paginate through all available models
+  do {
+    const params = new URLSearchParams({ limit: '1000' });
+    if (afterId) {
+      params.set('after_id', afterId);
+    }
+
+    const response = await fetch(
+      `https://api.anthropic.com/v1/models?${params.toString()}`,
+      {
+        headers: {
+          'x-api-key': apiKey,
+          'anthropic-version': '2023-06-01',
+        },
+      }
+    );
+
+    if (!response.ok) {
+      const errorText = await response.text();
+      logger.error('Claude API error', { error: errorText });
+      throw new Error('Invalid Claude API key or connection failed');
+    }
+
+    const data = await response.json();
+
+    for (const model of data.data) {
+      allModels.push({
+        id: model.id,
+        name: model.display_name || model.id,
+      });
+    }
+
+    afterId = data.has_more ? data.last_id : undefined;
+  } while (afterId);
+
+  return allModels;
+}
+
 // Helper functions for custom provider
 function isValidBaseUrl(url: string): boolean {
   try {
@@ -141,32 +184,10 @@ async function authenticatedHandler(req: AuthenticatedRequest) {
         .sort((a: any, b: any) => a.name.localeCompare(b.name));
 
     } else if (provider === 'claude') {
-      // Claude: Hardcoded list (Anthropic doesn't have a public models API endpoint)
-      models = [
-        { id: 'claude-sonnet-4-5-20250929', name: 'Claude Sonnet 4.5 (Latest)' },
-        { id: 'claude-3-7-sonnet-20250219', name: 'Claude 3.7 Sonnet' },
-        { id: 'claude-opus-4-20250514', name: 'Claude Opus 4' },
-        { id: 'claude-3-5-haiku-20241022', name: 'Claude 3.5 Haiku' },
-      ];
-
-      // Test connection with a simple API call
-      const response = await fetch('https://api.anthropic.com/v1/messages', {
-        method: 'POST',
-        headers: {
-          'x-api-key': testApiKey,
-          'anthropic-version': '2023-06-01',
-          'content-type': 'application/json',
-        },
-        body: JSON.stringify({
-          model: 'claude-3-5-haiku-20241022',
-          max_tokens: 10,
-          messages: [{ role: 'user', content: 'Test' }],
-        }),
-      });
-
-      if (!response.ok) {
-        const errorText = await response.text();
-        logger.error('Claude API error', { error: errorText });
+      // Claude: Fetch models dynamically from the Anthropic Models API
+      try {
+        models = await fetchClaudeModels(testApiKey);
+      } catch {
         return NextResponse.json(
           { error: 'Invalid Claude API key or connection failed' },
           { status: 400 }
@@ -333,32 +354,10 @@ async function unauthenticatedHandler(req: NextRequest) {
         .sort((a: any, b: any) => a.name.localeCompare(b.name));
 
     } else if (provider === 'claude') {
-      // Claude: Hardcoded list (Anthropic doesn't have a public models API endpoint)
-      models = [
-        { id: 'claude-sonnet-4-5-20250929', name: 'Claude Sonnet 4.5 (Latest)' },
-        { id: 'claude-3-7-sonnet-20250219', name: 'Claude 3.7 Sonnet' },
-        { id: 'claude-opus-4-20250514', name: 'Claude Opus 4' },
-        { id: 'claude-3-5-haiku-20241022', name: 'Claude 3.5 Haiku' },
-      ];
-
-      // Test connection with a simple API call
-      const response = await fetch('https://api.anthropic.com/v1/messages', {
-        method: 'POST',
-        headers: {
-          'x-api-key': apiKey,
-          'anthropic-version': '2023-06-01',
-          'content-type': 'application/json',
-        },
-        body: JSON.stringify({
-          model: 'claude-3-5-haiku-20241022',
-          max_tokens: 10,
-          messages: [{ role: 'user', content: 'Test' }],
-        }),
-      });
-
-      if (!response.ok) {
-        const errorText = await response.text();
-        logger.error('Claude API error', { error: errorText });
+      // Claude: Fetch models dynamically from the Anthropic Models API
+      try {
+        models = await fetchClaudeModels(apiKey);
+      } catch {
         return NextResponse.json(
           { error: 'Invalid Claude API key or connection failed' },
           { status: 400 }

src/app/api/requests/[id]/interactive-search/route.ts

@@ -8,6 +8,7 @@ import { requireAuth, AuthenticatedRequest } from '@/lib/middleware/auth';
 import { prisma } from '@/lib/db';
 import { getProwlarrService } from '@/lib/integrations/prowlarr.service';
 import { rankTorrents } from '@/lib/utils/ranking-algorithm';
+import { groupIndexersByCategories, getGroupDescription } from '@/lib/utils/indexer-grouping';
 import { RMABLogger } from '@/lib/utils/logger';
 import { resolveInteractiveSearchAccess } from '@/lib/utils/permissions';
 
@@ -97,9 +98,8 @@ export async function POST(
       }
 
       const indexersConfig = JSON.parse(indexersConfigStr);
-      const enabledIndexerIds = indexersConfig.map((indexer: any) => indexer.id);
 
-      if (enabledIndexerIds.length === 0) {
+      if (indexersConfig.length === 0) {
         return NextResponse.json(
           { error: 'ConfigError', message: 'No indexers enabled. Please enable at least one indexer in settings.' },
           { status: 400 }
@@ -115,22 +115,53 @@ export async function POST(
       const flagConfigStr = await configService.get('indexer_flag_config');
       const flagConfigs = flagConfigStr ? JSON.parse(flagConfigStr) : [];
 
-      // Search Prowlarr for torrents - ONLY enabled indexers
-      const prowlarr = await getProwlarrService();
-      // Use custom title if provided, otherwise use audiobook's title
-      const searchQuery = customTitle || requestRecord.audiobook.title;
+      // Group indexers by their category configuration
+      const { groups, skippedIndexers } = groupIndexersByCategories(indexersConfig);
 
-      logger.info(`Searching ${enabledIndexerIds.length} enabled indexers`, { searchQuery });
+      if (skippedIndexers.length > 0) {
+        const skippedNames = skippedIndexers.map(idx => idx.name).join(', ');
+        logger.info(`Skipping ${skippedIndexers.length} indexer(s) with no audiobook categories: ${skippedNames}`);
+      }
+
+      // Use custom title if provided, otherwise use audiobook's title
+      const searchTitle = customTitle || requestRecord.audiobook.title;
+      const searchAuthor = requestRecord.audiobook.author;
+
+      logger.info(`Searching ${indexersConfig.length - skippedIndexers.length} enabled indexers in ${groups.length} group${groups.length > 1 ? 's' : ''}`, { searchTitle });
       if (customTitle) {
         logger.debug('Using custom search title', { customTitle, originalTitle: requestRecord.audiobook.title });
       }
 
-      const results = await prowlarr.search(searchQuery, {
-        indexerIds: enabledIndexerIds,
-        maxResults: 100, // Increased limit for broader search
+      // Log each group for transparency
+      groups.forEach((group, index) => {
+        logger.debug(`Group ${index + 1}: ${getGroupDescription(group)}`);
       });
 
-      logger.debug(`Found ${results.length} raw results`, { requestId: id });
+      // Search Prowlarr for each group and combine results
+      const prowlarr = await getProwlarrService();
+      const allResults = [];
+
+      for (let i = 0; i < groups.length; i++) {
+        const group = groups[i];
+        logger.debug(`Searching group ${i + 1}/${groups.length}: ${getGroupDescription(group)}`);
+
+        try {
+          const groupResults = await prowlarr.searchWithVariations(searchTitle, searchAuthor, {
+            categories: group.categories,
+            indexerIds: group.indexerIds,
+            maxResults: 100,
+          });
+
+          logger.debug(`Group ${i + 1} returned ${groupResults.length} results`);
+          allResults.push(...groupResults);
+        } catch (error) {
+          logger.error(`Group ${i + 1} search failed: ${error instanceof Error ? error.message : 'Unknown error'}`);
+          // Continue with other groups even if one fails
+        }
+      }
+
+      const results = allResults;
+      logger.info(`Found ${results.length} total results from ${groups.length} group${groups.length > 1 ? 's' : ''}`, { requestId: id });
 
       if (results.length === 0) {
         return NextResponse.json({
@@ -140,12 +171,31 @@ export async function POST(
         });
       }
 
+      // Fetch runtime from Audnexus if ASIN available (for size-based scoring)
+      let durationMinutes: number | undefined;
+      if (requestRecord.audiobook.audibleAsin) {
+        try {
+          const { getAudibleService } = await import('@/lib/integrations/audible.service');
+          const audibleService = getAudibleService();
+          const runtime = await audibleService.getRuntime(requestRecord.audiobook.audibleAsin);
+          if (runtime) {
+            durationMinutes = runtime;
+            logger.info(`Fetched runtime: ${runtime} minutes for ASIN ${requestRecord.audiobook.audibleAsin}`);
+          } else {
+            logger.debug(`No runtime found for ASIN ${requestRecord.audiobook.audibleAsin}`);
+          }
+        } catch (error) {
+          logger.debug(`Failed to fetch runtime for ASIN ${requestRecord.audiobook.audibleAsin}: ${error instanceof Error ? error.message : 'Unknown error'}`);
+        }
+      }
+
       // Rank torrents using the ranking algorithm with indexer priorities and flag configs
       // Always use the audiobook's title/author for ranking (not custom search query)
       // requireAuthor: false - interactive mode, show all results for user decision
       const rankedResults = rankTorrents(results, {
         title: requestRecord.audiobook.title,
         author: requestRecord.audiobook.author,
+        durationMinutes,
       }, {
         indexerPriorities,
         flagConfigs,
@@ -160,17 +210,23 @@ export async function POST(
       const top3 = rankedResults.slice(0, 3);
       if (top3.length > 0) {
         logger.debug('==================== RANKING DEBUG ====================');
-        logger.debug('Search parameters', { searchQuery, requestedTitle: requestRecord.audiobook.title, requestedAuthor: requestRecord.audiobook.author });
+        logger.debug('Search parameters', { searchTitle, requestedTitle: requestRecord.audiobook.title, requestedAuthor: requestRecord.audiobook.author });
         logger.debug(`Top ${top3.length} results (out of ${rankedResults.length} total)`);
         logger.debug('--------------------------------------------------------');
         top3.forEach((result, index) => {
+          const sizeMB = (result.size / (1024 * 1024)).toFixed(1);
+          const mbPerMin = durationMinutes ? ((result.size / (1024 * 1024)) / durationMinutes).toFixed(2) : 'N/A';
+
           logger.debug(`${index + 1}. "${result.title}"`, {
             indexer: result.indexer,
             indexerId: result.indexerId,
             baseScore: `${result.score.toFixed(1)}/100`,
             matchScore: `${result.breakdown.matchScore.toFixed(1)}/60`,
-            formatScore: `${result.breakdown.formatScore.toFixed(1)}/25 (${result.format || 'unknown'})`,
-            seederScore: `${result.breakdown.seederScore.toFixed(1)}/15 (${result.seeders} seeders)`,
+            formatScore: `${result.breakdown.formatScore.toFixed(1)}/10 (${result.format || 'unknown'})`,
+            sizeScore: durationMinutes
+              ? `${result.breakdown.sizeScore.toFixed(1)}/15 (${sizeMB} MB, ${mbPerMin} MB/min)`
+              : 'N/A (no runtime)',
+            seederScore: `${result.breakdown.seederScore.toFixed(1)}/15 (${result.seeders !== undefined ? result.seeders + ' seeders' : 'N/A for Usenet'})`,
             bonusPoints: `+${result.bonusPoints.toFixed(1)}`,
             bonusModifiers: result.bonusModifiers.map(mod => `${mod.reason}: +${mod.points.toFixed(1)}`),
             finalScore: result.finalScore.toFixed(1),

src/app/api/setup/download-client-categories/route.ts

@@ -0,0 +1,63 @@
+/**
+ * Component: Setup Wizard Download Client Categories API
+ * Documentation: documentation/setup-wizard.md
+ */
+
+import { NextRequest, NextResponse } from 'next/server';
+import { getConfigService } from '@/lib/services/config.service';
+import { getDownloadClientManager, DownloadClientConfig } from '@/lib/services/download-client-manager.service';
+import { SUPPORTED_CLIENT_TYPES } from '@/lib/interfaces/download-client.interface';
+import { requireSetupIncomplete } from '@/lib/middleware/auth';
+import { RMABLogger } from '@/lib/utils/logger';
+
+const logger = RMABLogger.create('API.Setup.DownloadClientCategories');
+
+/**
+ * POST - Fetch categories from a download client during setup wizard
+ */
+export async function POST(request: NextRequest) {
+  return requireSetupIncomplete(request, async (req) => {
+    try {
+      const { type, name, url, username, password, disableSSLVerify } = await req.json();
+
+      if (!type || !url) {
+        return NextResponse.json(
+          { success: false, error: 'Type and URL are required' },
+          { status: 400 }
+        );
+      }
+
+      if (!SUPPORTED_CLIENT_TYPES.includes(type)) {
+        return NextResponse.json(
+          { success: false, error: `Invalid client type. Must be one of: ${SUPPORTED_CLIENT_TYPES.join(', ')}` },
+          { status: 400 }
+        );
+      }
+
+      const testConfig: DownloadClientConfig = {
+        id: 'setup-categories',
+        type,
+        name: name || type,
+        enabled: true,
+        url,
+        username: username || '',
+        password: password || '',
+        disableSSLVerify: disableSSLVerify || false,
+        remotePathMappingEnabled: false,
+      };
+
+      const configService = getConfigService();
+      const manager = getDownloadClientManager(configService);
+      const service = await manager.createClientFromConfig(testConfig);
+      const categories = await service.getCategories();
+
+      return NextResponse.json({ success: true, categories });
+    } catch (error) {
+      logger.error('Failed to fetch categories', { error: error instanceof Error ? error.message : String(error) });
+      return NextResponse.json(
+        { success: false, error: error instanceof Error ? error.message : 'Failed to fetch categories' },
+        { status: 500 }
+      );
+    }
+  });
+}

src/app/login/page.tsx

@@ -38,6 +38,7 @@ function LoginContent() {
     hasLocalUsers: boolean;
     oidcProviderName: string | null;
     localLoginDisabled: boolean;
+    allowWeakPassword: boolean;
     automationEnabled: boolean;
   } | null>(null);
   const [showRegisterForm, setShowRegisterForm] = useState(false);
@@ -78,6 +79,7 @@ function LoginContent() {
           hasLocalUsers: false,
           oidcProviderName: null,
           localLoginDisabled: false,
+          allowWeakPassword: false,
           automationEnabled: false,
         });
       }
@@ -345,7 +347,7 @@ function LoginContent() {
       return;
     }
 
-    if (registerPassword.length < 8) {
+    if (!authProviders?.allowWeakPassword && registerPassword.length < 8) {
       setError('Password must be at least 8 characters');
       setIsLoggingIn(false);
       return;
@@ -639,10 +641,12 @@ function LoginContent() {
                             className="w-full px-4 py-3 bg-gray-800 border border-gray-700 rounded-lg text-white placeholder-gray-500 focus:outline-none focus:ring-2 focus:ring-orange-500 focus:border-transparent"
                             placeholder="••••••••"
                             required
-                            minLength={8}
+                            minLength={authProviders?.allowWeakPassword ? 1 : 8}
                             autoComplete="new-password"
                           />
-                          <p className="text-xs text-gray-500 mt-1">At least 8 characters</p>
+                          {!authProviders?.allowWeakPassword && (
+                            <p className="text-xs text-gray-500 mt-1">At least 8 characters</p>
+                          )}
                         </div>
                         <div>
                           <label htmlFor="register-confirm-password" className="block text-sm font-medium text-gray-300 mb-2">
@@ -656,7 +660,7 @@ function LoginContent() {
                             className="w-full px-4 py-3 bg-gray-800 border border-gray-700 rounded-lg text-white placeholder-gray-500 focus:outline-none focus:ring-2 focus:ring-orange-500 focus:border-transparent"
                             placeholder="••••••••"
                             required
-                            minLength={8}
+                            minLength={authProviders?.allowWeakPassword ? 1 : 8}
                             autoComplete="new-password"
                           />
                         </div>

src/app/setup/page.tsx

@@ -27,7 +27,13 @@ import { AudibleRegion } from '@/lib/types/audible';
 interface SelectedIndexer {
   id: number;
   name: string;
+  protocol: string;
   priority: number;
+  seedingTimeMinutes?: number;
+  removeAfterProcessing?: boolean;
+  rssEnabled: boolean;
+  audiobookCategories: number[];
+  ebookCategories: number[];
 }
 
 interface SetupState {
@@ -86,6 +92,14 @@ interface SetupState {
   bookdateApiKey: string;
   bookdateModel: string;
   bookdateConfigured: boolean;
+
+  // Cached UI state for back-navigation persistence
+  plexLibraries: { id: string; title: string; type: string }[];
+  absLibraries: { id: string; name: string; itemCount: number }[];
+  oidcTested: boolean;
+  pathsTested: boolean;
+  bookdateModels: { id: string; name: string }[];
+
   validated: {
     plex: boolean;
     prowlarr: boolean;
@@ -152,6 +166,14 @@ export default function SetupWizard() {
     bookdateApiKey: '',
     bookdateModel: '',
     bookdateConfigured: false,
+
+    // Cached UI state for back-navigation persistence
+    plexLibraries: [],
+    absLibraries: [],
+    oidcTested: false,
+    pathsTested: false,
+    bookdateModels: [],
+
     validated: {
       plex: false,
       prowlarr: false,
@@ -379,6 +401,7 @@ export default function SetupWizard() {
             plexToken={state.plexToken}
             plexLibraryId={state.plexLibraryId}
             plexTriggerScanAfterImport={state.plexTriggerScanAfterImport}
+            plexLibraries={state.plexLibraries}
             onUpdate={updateField}
             onNext={() => goToStep(currentStepNumber + 1)}
             onBack={() => goToStep(currentStepNumber - 1)}
@@ -397,6 +420,7 @@ export default function SetupWizard() {
             absApiToken={state.absApiToken}
             absLibraryId={state.absLibraryId}
             absTriggerScanAfterImport={state.absTriggerScanAfterImport}
+            absLibraries={state.absLibraries}
             onUpdate={updateField}
             onNext={() => goToStep(currentStepNumber + 1)}
             onBack={() => goToStep(currentStepNumber - 1)}
@@ -435,6 +459,7 @@ export default function SetupWizard() {
               oidcAdminClaimEnabled={state.oidcAdminClaimEnabled}
               oidcAdminClaimName={state.oidcAdminClaimName}
               oidcAdminClaimValue={state.oidcAdminClaimValue}
+              oidcTested={state.oidcTested}
               onUpdate={updateField}
               onNext={() => goToStep(currentStepNumber + 1)}
               onBack={() => goToStep(currentStepNumber - 1)}
@@ -482,6 +507,7 @@ export default function SetupWizard() {
         <ProwlarrStep
           prowlarrUrl={state.prowlarrUrl}
           prowlarrApiKey={state.prowlarrApiKey}
+          prowlarrIndexers={state.prowlarrIndexers}
           onUpdate={updateField}
           onNext={() => goToStep(currentStepNumber + 1)}
           onBack={() => goToStep(currentStepNumber - 1)}
@@ -512,6 +538,7 @@ export default function SetupWizard() {
           mediaDir={state.mediaDir}
           metadataTaggingEnabled={state.metadataTaggingEnabled}
           chapterMergingEnabled={state.chapterMergingEnabled}
+          pathsTested={state.pathsTested}
           onUpdate={updateField}
           onNext={() => goToStep(currentStepNumber + 1)}
           onBack={() => goToStep(currentStepNumber - 1)}
@@ -528,6 +555,7 @@ export default function SetupWizard() {
           bookdateApiKey={state.bookdateApiKey}
           bookdateModel={state.bookdateModel}
           bookdateConfigured={state.bookdateConfigured}
+          bookdateModels={state.bookdateModels}
           onUpdate={updateField}
           onNext={() => goToStep(currentStepNumber + 1)}
           onSkip={() => goToStep(currentStepNumber + 1)}

src/app/setup/steps/AdminAccountStep.tsx

@@ -5,7 +5,7 @@
 
 'use client';
 
-import { useState } from 'react';
+import { useState, useEffect } from 'react';
 import { Button } from '@/components/ui/Button';
 
 interface AdminAccountStepProps {
@@ -25,6 +25,23 @@ export function AdminAccountStep({
 }: AdminAccountStepProps) {
   const [confirmPassword, setConfirmPassword] = useState('');
   const [errors, setErrors] = useState<{ username?: string; password?: string; confirm?: string }>({});
+  const [allowWeakPassword, setAllowWeakPassword] = useState(false);
+
+  // Fetch password policy
+  useEffect(() => {
+    const fetchPolicy = async () => {
+      try {
+        const response = await fetch('/api/auth/providers');
+        if (response.ok) {
+          const data = await response.json();
+          setAllowWeakPassword(data.allowWeakPassword === true);
+        }
+      } catch {
+        // Default to strict validation on error
+      }
+    };
+    fetchPolicy();
+  }, []);
 
   const validate = () => {
     const newErrors: { username?: string; password?: string; confirm?: string } = {};
@@ -35,7 +52,9 @@ export function AdminAccountStep({
     }
 
     // Validate password
-    if (!adminPassword || adminPassword.length < 8) {
+    if (!adminPassword) {
+      newErrors.password = 'Password is required';
+    } else if (!allowWeakPassword && adminPassword.length < 8) {
       newErrors.password = 'Password must be at least 8 characters';
     }
 
@@ -104,7 +123,7 @@ export function AdminAccountStep({
             <p className="mt-1 text-sm text-red-400">{errors.password}</p>
           )}
           <p className="mt-1 text-xs text-gray-500">
-            Choose a strong password (minimum 8 characters)
+            {allowWeakPassword ? 'Choose a password' : 'Choose a strong password (minimum 8 characters)'}
           </p>
         </div>
 

src/app/setup/steps/AudiobookshelfStep.tsx

@@ -14,7 +14,8 @@ interface AudiobookshelfStepProps {
   absApiToken: string;
   absLibraryId: string;
   absTriggerScanAfterImport: boolean;
-  onUpdate: (field: string, value: string | boolean) => void;
+  absLibraries: Library[];
+  onUpdate: (field: string, value: any) => void;
   onNext: () => void;
   onBack: () => void;
 }
@@ -30,6 +31,7 @@ export function AudiobookshelfStep({
   absApiToken,
   absLibraryId,
   absTriggerScanAfterImport,
+  absLibraries,
   onUpdate,
   onNext,
   onBack,
@@ -39,8 +41,12 @@ export function AudiobookshelfStep({
     success: boolean;
     message?: string;
     libraries?: Library[];
-  } | null>(null);
-  const [libraries, setLibraries] = useState<Library[]>([]);
+  } | null>(
+    absLibraries.length > 0
+      ? { success: true, message: 'Connection verified previously.' }
+      : null
+  );
+  const [libraries, setLibraries] = useState<Library[]>(absLibraries);
 
   const testConnection = async () => {
     setTesting(true);
@@ -56,12 +62,14 @@ export function AudiobookshelfStep({
       const data = await response.json();
 
       if (response.ok && data.success) {
+        const libs = data.libraries || [];
         setTestResult({
           success: true,
           message: 'Connection successful!',
-          libraries: data.libraries || [],
+          libraries: libs,
         });
-        setLibraries(data.libraries || []);
+        setLibraries(libs);
+        onUpdate('absLibraries', libs);
       } else {
         setTestResult({
           success: false,

src/app/setup/steps/BookDateStep.tsx

@@ -12,6 +12,7 @@ interface BookDateStepProps {
   bookdateApiKey: string;
   bookdateModel: string;
   bookdateConfigured: boolean;
+  bookdateModels: ModelOption[];
   onUpdate: (field: string, value: any) => void;
   onNext: () => void;
   onSkip: () => void;
@@ -28,6 +29,7 @@ export function BookDateStep({
   bookdateApiKey,
   bookdateModel,
   bookdateConfigured,
+  bookdateModels,
   onUpdate,
   onNext,
   onSkip,
@@ -35,7 +37,7 @@ export function BookDateStep({
 }: BookDateStepProps) {
   const [testing, setTesting] = useState(false);
   const [tested, setTested] = useState(bookdateConfigured);
-  const [models, setModels] = useState<ModelOption[]>([]);
+  const [models, setModels] = useState<ModelOption[]>(bookdateModels);
   const [error, setError] = useState<string | null>(null);
 
   const handleTestConnection = async () => {
@@ -65,19 +67,22 @@ export function BookDateStep({
         throw new Error(data.error || 'Connection test failed');
       }
 
-      setModels(data.models || []);
+      const fetchedModels = data.models || [];
+      setModels(fetchedModels);
       setTested(true);
       onUpdate('bookdateConfigured', true);
+      onUpdate('bookdateModels', fetchedModels);
 
       // Auto-select first model if none selected
-      if (!bookdateModel && data.models?.length > 0) {
-        onUpdate('bookdateModel', data.models[0].id);
+      if (!bookdateModel && fetchedModels.length > 0) {
+        onUpdate('bookdateModel', fetchedModels[0].id);
       }
 
     } catch (err) {
       setError(err instanceof Error ? err.message : 'Connection test failed');
       setTested(false);
       onUpdate('bookdateConfigured', false);
+      onUpdate('bookdateModels', []);
     } finally {
       setTesting(false);
     }
@@ -123,6 +128,7 @@ export function BookDateStep({
             setTested(false);
             setModels([]);
             onUpdate('bookdateConfigured', false);
+            onUpdate('bookdateModels', []);
           }}
           className="w-full px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-800 text-gray-900 dark:text-white focus:ring-2 focus:ring-blue-500"
         >
@@ -144,6 +150,7 @@ export function BookDateStep({
             setTested(false);
             setModels([]);
             onUpdate('bookdateConfigured', false);
+            onUpdate('bookdateModels', []);
           }}
           placeholder={bookdateProvider === 'openai' ? 'sk-...' : 'sk-ant-...'}
           className="w-full px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-800 text-gray-900 dark:text-white focus:ring-2 focus:ring-blue-500"

src/app/setup/steps/DownloadClientStep.tsx

@@ -5,7 +5,7 @@
 
 'use client';
 
-import { useState, useEffect } from 'react';
+import { useState } from 'react';
 import { Button } from '@/components/ui/Button';
 import { DownloadClientManagement } from '@/components/admin/download-clients/DownloadClientManagement';
 import { DownloadClientType } from '@/lib/interfaces/download-client.interface';
@@ -24,6 +24,7 @@ interface DownloadClient {
   localPath?: string;
   category?: string;
   customPath?: string;
+  postImportCategory?: string;
 }
 
 interface DownloadClientStepProps {

src/app/setup/steps/OIDCConfigStep.tsx

@@ -22,6 +22,7 @@ interface OIDCConfigStepProps {
   oidcAdminClaimEnabled: boolean;
   oidcAdminClaimName: string;
   oidcAdminClaimValue: string;
+  oidcTested: boolean;
   onUpdate: (field: string, value: any) => void;
   onNext: () => void;
   onBack: () => void;
@@ -40,6 +41,7 @@ export function OIDCConfigStep({
   oidcAdminClaimEnabled,
   oidcAdminClaimName,
   oidcAdminClaimValue,
+  oidcTested,
   onUpdate,
   onNext,
   onBack,
@@ -48,7 +50,11 @@ export function OIDCConfigStep({
   const [testResult, setTestResult] = useState<{
     success: boolean;
     message: string;
-  } | null>(null);
+  } | null>(
+    oidcTested
+      ? { success: true, message: 'OIDC configuration verified previously.' }
+      : null
+  );
 
   const testConnection = async () => {
     setTesting(true);
@@ -72,17 +78,20 @@ export function OIDCConfigStep({
           success: true,
           message: 'OIDC discovery successful! Provider configuration validated.',
         });
+        onUpdate('oidcTested', true);
       } else {
         setTestResult({
           success: false,
           message: data.error || 'OIDC discovery failed',
         });
+        onUpdate('oidcTested', false);
       }
     } catch (error) {
       setTestResult({
         success: false,
         message: error instanceof Error ? error.message : 'Connection test failed',
       });
+      onUpdate('oidcTested', false);
     } finally {
       setTesting(false);
     }

src/app/setup/steps/PathsStep.tsx

@@ -14,7 +14,8 @@ interface PathsStepProps {
   mediaDir: string;
   metadataTaggingEnabled: boolean;
   chapterMergingEnabled: boolean;
-  onUpdate: (field: string, value: string | boolean) => void;
+  pathsTested: boolean;
+  onUpdate: (field: string, value: any) => void;
   onNext: () => void;
   onBack: () => void;
 }
@@ -24,6 +25,7 @@ export function PathsStep({
   mediaDir,
   metadataTaggingEnabled,
   chapterMergingEnabled,
+  pathsTested,
   onUpdate,
   onNext,
   onBack,
@@ -34,7 +36,11 @@ export function PathsStep({
     message: string;
     downloadDirValid?: boolean;
     mediaDirValid?: boolean;
-  } | null>(null);
+  } | null>(
+    pathsTested
+      ? { success: true, message: 'Paths validated previously.', downloadDirValid: true, mediaDirValid: true }
+      : null
+  );
 
   const testPaths = async () => {
     setTesting(true);
@@ -59,6 +65,7 @@ export function PathsStep({
           downloadDirValid: data.downloadDirValid,
           mediaDirValid: data.mediaDirValid,
         });
+        onUpdate('pathsTested', true);
       } else {
         setTestResult({
           success: false,
@@ -66,12 +73,14 @@ export function PathsStep({
           downloadDirValid: data.downloadDirValid,
           mediaDirValid: data.mediaDirValid,
         });
+        onUpdate('pathsTested', false);
       }
     } catch (error) {
       setTestResult({
         success: false,
         message: error instanceof Error ? error.message : 'Path validation failed',
       });
+      onUpdate('pathsTested', false);
     } finally {
       setTesting(false);
     }

src/app/setup/steps/PlexStep.tsx

@@ -14,7 +14,8 @@ interface PlexStepProps {
   plexToken: string;
   plexLibraryId: string;
   plexTriggerScanAfterImport: boolean;
-  onUpdate: (field: string, value: string | boolean) => void;
+  plexLibraries: PlexLibrary[];
+  onUpdate: (field: string, value: any) => void;
   onNext: () => void;
   onBack: () => void;
 }
@@ -30,6 +31,7 @@ export function PlexStep({
   plexToken,
   plexLibraryId,
   plexTriggerScanAfterImport,
+  plexLibraries,
   onUpdate,
   onNext,
   onBack,
@@ -39,8 +41,12 @@ export function PlexStep({
     success: boolean;
     message: string;
     libraries?: PlexLibrary[];
-  } | null>(null);
-  const [libraries, setLibraries] = useState<PlexLibrary[]>([]);
+  } | null>(
+    plexLibraries.length > 0
+      ? { success: true, message: 'Connection verified previously.' }
+      : null
+  );
+  const [libraries, setLibraries] = useState<PlexLibrary[]>(plexLibraries);
 
   const testConnection = async () => {
     setTesting(true);
@@ -56,12 +62,14 @@ export function PlexStep({
       const data = await response.json();
 
       if (response.ok && data.success) {
+        const libs = data.libraries || [];
         setTestResult({
           success: true,
           message: `Connected to ${data.serverName || 'Plex server'} successfully!`,
-          libraries: data.libraries || [],
+          libraries: libs,
         });
-        setLibraries(data.libraries || []);
+        setLibraries(libs);
+        onUpdate('plexLibraries', libs);
       } else {
         setTestResult({
           success: false,

src/app/setup/steps/ProwlarrStep.tsx

@@ -5,7 +5,7 @@
 
 'use client';
 
-import { useState, useEffect } from 'react';
+import { useState } from 'react';
 import { Button } from '@/components/ui/Button';
 import { Input } from '@/components/ui/Input';
 import { IndexerManagement } from '@/components/admin/indexers/IndexerManagement';
@@ -13,6 +13,7 @@ import { IndexerManagement } from '@/components/admin/indexers/IndexerManagement
 interface ProwlarrStepProps {
   prowlarrUrl: string;
   prowlarrApiKey: string;
+  prowlarrIndexers: SelectedIndexer[];
   onUpdate: (field: string, value: any) => void;
   onNext: () => void;
   onBack: () => void;
@@ -33,17 +34,19 @@ interface SelectedIndexer {
 export function ProwlarrStep({
   prowlarrUrl,
   prowlarrApiKey,
+  prowlarrIndexers,
   onUpdate,
   onNext,
   onBack,
 }: ProwlarrStepProps) {
-  const [configuredIndexers, setConfiguredIndexers] = useState<SelectedIndexer[]>([]);
+  const [configuredIndexers, setConfiguredIndexers] = useState<SelectedIndexer[]>(prowlarrIndexers);
   const [errorMessage, setErrorMessage] = useState<string | null>(null);
 
-  // Sync configured indexers with parent
-  useEffect(() => {
-    onUpdate('prowlarrIndexers', configuredIndexers);
-  }, [configuredIndexers, onUpdate]);
+  // Update both local and parent state when indexers change
+  const handleIndexersChange = (indexers: SelectedIndexer[]) => {
+    setConfiguredIndexers(indexers);
+    onUpdate('prowlarrIndexers', indexers);
+  };
 
   const handleNext = () => {
     setErrorMessage(null);
@@ -136,7 +139,7 @@ export function ProwlarrStep({
             prowlarrApiKey={prowlarrApiKey}
             mode="wizard"
             initialIndexers={configuredIndexers}
-            onIndexersChange={setConfiguredIndexers}
+            onIndexersChange={handleIndexersChange}
           />
         </div>
       </div>