chore: remove unused UI components, dummy data, and theme provider

app/context/auth-context.tsx

@@ -0,0 +1,55 @@
+import { createContext, useContext, useState, useEffect, type ReactNode } from "react"
+import { useNavigate } from "react-router"
+import { type User, getUser, getUserAsync, logout as logoutUser } from "@/lib/auth"
+
+interface AuthContextType {
+  user: User | null
+  loading: boolean
+  logout: () => void
+  refreshUser: () => void
+}
+
+const AuthContext = createContext<AuthContextType | null>(null)
+
+export function AuthProvider({ children }: { children: ReactNode }) {
+  const [user, setUser] = useState<User | null>(null)
+  const [loading, setLoading] = useState(true)
+  const navigate = useNavigate()
+
+  useEffect(() => {
+    async function init() {
+      let currentUser = getUser()
+      if (!currentUser) {
+        currentUser = await getUserAsync()
+      }
+      setUser(currentUser)
+      setLoading(false)
+    }
+    init()
+  }, [])
+
+  async function logout() {
+    await logoutUser()
+    setUser(null)
+    navigate("/login")
+  }
+
+  function refreshUser() {
+    const currentUser = getUser()
+    setUser(currentUser)
+  }
+
+  return (
+    <AuthContext.Provider value={{ user, loading, logout, refreshUser }}>
+      {children}
+    </AuthContext.Provider>
+  )
+}
+
+export function useAuth() {
+  const context = useContext(AuthContext)
+  if (!context) {
+    throw new Error("useAuth must be used within AuthProvider")
+  }
+  return context
+}