diff --git a/apps/web/package.json b/apps/web/package.json
index 96506c60f..714dbdd7c 100644
--- a/apps/web/package.json
+++ b/apps/web/package.json
@@ -64,7 +64,6 @@
     "@sentry/react": "^10.32.1",
     "@tanstack/react-query": "^5.17.0",
     "@tanstack/react-virtual": "^3.13.12",
-    "@types/dompurify": "^3.0.5",
     "axios": "^1.13.5",
     "clsx": "^2.1.0",
     "date-fns": "^4.1.0",
@@ -83,9 +82,6 @@
     "react-hot-toast": "^2.6.0",
     "react-i18next": "^15.7.3",
     "react-router-dom": "^6.22.0",
-    "rollup-plugin-visualizer": "^6.0.5",
-    "swagger-ui-dist": "^5.31.0",
-    "swagger-ui-react": "^5.31.0",
     "tailwind-merge": "^2.2.1",
     "zod": "^3.25.76",
     "zustand": "^4.5.0"
@@ -108,8 +104,12 @@
     "@types/react-dom": "^18.2.18",
     "@types/react-dropzone": "^4.2.2",
     "@types/swagger-ui-react": "^5.18.0",
+    "@types/dompurify": "^3.0.5",
     "@types/uuid": "^10.0.0",
     "@typescript-eslint/eslint-plugin": "^8.0.0",
+    "rollup-plugin-visualizer": "^6.0.5",
+    "swagger-ui-dist": "^5.31.0",
+    "swagger-ui-react": "^5.31.0",
     "@typescript-eslint/parser": "^8.0.0",
     "@vitejs/plugin-react": "^4.2.1",
     "@vitest/browser": "^3.2.4",
diff --git a/apps/web/src/features/auth/components/TwoFactorVerify.tsx b/apps/web/src/features/auth/components/TwoFactorVerify.tsx
index 2a678a927..7b4608631 100644
--- a/apps/web/src/features/auth/components/TwoFactorVerify.tsx
+++ b/apps/web/src/features/auth/components/TwoFactorVerify.tsx
@@ -11,7 +11,6 @@ import { Input } from '@/components/ui/input';
 import { Label } from '@/components/ui/label';
 import { Alert, AlertDescription } from '@/components/ui/alert';
 import { Loader2, Shield, AlertCircle } from 'lucide-react';
-import { twoFactorService } from '@/services/2fa-service';
 import { useToast } from '@/hooks/useToast';
 import { parseApiError } from '@/utils/apiErrorHandler';
 
diff --git a/apps/web/src/features/chat/components/ChatInput.tsx b/apps/web/src/features/chat/components/ChatInput.tsx
index b2ac39ba9..5699242fd 100644
--- a/apps/web/src/features/chat/components/ChatInput.tsx
+++ b/apps/web/src/features/chat/components/ChatInput.tsx
@@ -132,7 +132,7 @@ export const ChatInput: React.FC = () => {
       {/* Attachments Preview */}
       {attachments.length > 0 && (
         <div className="absolute bottom-full left-0 right-0 p-4 bg-background/90 backdrop-blur-xl border-t border-white/10 flex gap-2 overflow-x-auto">
-          {attachments.map((att) => (
+          {attachments.map((att, idx) => (
             <div
               key={att.id || att.file_name}
               className="relative group flex items-center gap-2 p-2 bg-white/5 rounded-lg border border-white/10 text-xs text-foreground min-w-36"
@@ -144,7 +144,7 @@ export const ChatInput: React.FC = () => {
               )}
               <span className="truncate flex-1">{att.file_name}</span>
               <button
-                onClick={() => removeAttachment(i)}
+                onClick={() => removeAttachment(idx)}
                 className="p-1 hover:bg-white/10 rounded-full text-destructive opacity-0 group-hover:opacity-100 transition-opacity"
               >
                 <X size={12} />
diff --git a/apps/web/src/services/authService.ts b/apps/web/src/services/authService.ts
index d7c1b4350..a362e5f0a 100644
--- a/apps/web/src/services/authService.ts
+++ b/apps/web/src/services/authService.ts
@@ -2,6 +2,20 @@ import { apiClient } from '@/services/api/client';
 import { User, UserDTO } from '../types';
 import { logger } from '@/utils/logger';
 
+export interface LoginCredentials {
+  email: string;
+  password: string;
+  remember_me?: boolean;
+}
+
+export interface RegisterData {
+  username: string;
+  email: string;
+  password: string;
+  first_name?: string;
+  last_name?: string;
+}
+
 // Helper to map Backend DTO to Frontend Model
 const mapUserDTO = (dto: UserDTO): User => ({
   id: dto.id,
@@ -51,7 +65,7 @@ export const authService = {
     };
   },
 
-  register: async (data: any) => {
+  register: async (data: RegisterData) => {
     const response = await apiClient.post<{
       user: UserDTO;
       access_token: string;