feat(frontend): Finalize auth refactor, routing, and resolve all code review findings

frontend/src/components/auth/LoginForm.tsx

@@ -15,6 +15,7 @@ import { Input } from "@/components/ui/input"
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card"
 import { useState } from "react"
 import { Separator } from "@/components/ui/separator"
+import axios from "axios"
 
 interface LoginFormProps {
   onSuccess: () => void
@@ -39,8 +40,12 @@ export function LoginForm({ onSuccess, onToggleMode }: LoginFormProps) {
     try {
       await AuthService.login(values.email, values.password)
       onSuccess()
-    } catch (err: any) {
-      setError(err.response?.data?.detail || "Login failed. Please check your credentials.")
+    } catch (err: unknown) {
+      if (axios.isAxiosError(err)) {
+        setError(err.response?.data?.detail || "Login failed. Please check your credentials.")
+      } else {
+        setError("An unexpected error occurred.")
+      }
     } finally {
       setIsLoading(false)
     }
@@ -49,7 +54,8 @@ export function LoginForm({ onSuccess, onToggleMode }: LoginFormProps) {
   const handleOIDCLogin = async () => {
     try {
       await AuthService.loginWithOIDC()
-    } catch (err) {
+    } catch (err: unknown) {
+      console.error("SSO Login failed:", err)
       setError("Failed to initialize SSO login.")
     }
   }