Wire avatar upload on Create/Update profile pages

Camera button now triggers file input -> uploads to POST /users/avatar -> updates auth context and preview.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

client/src/pages/CreateProfilePage.tsx

@@ -1,4 +1,4 @@
-import { useState } from 'react';
+import { useState, useRef } from 'react';
 import { useNavigate } from 'react-router-dom';
 import { User, Mail, Phone, Camera } from 'lucide-react';
 import { Input } from '../components/ui/Input';
@@ -19,6 +19,22 @@ export function CreateProfilePage() {
   const [bio, setBio] = useState('');
   const [saving, setSaving] = useState(false);
   const [error, setError] = useState('');
+  const [avatarPreview, setAvatarPreview] = useState<string | undefined>(user?.avatar || undefined);
+  const fileInputRef = useRef<HTMLInputElement>(null);
+
+  const handleAvatarChange = async (e: React.ChangeEvent<HTMLInputElement>) => {
+    const file = e.target.files?.[0];
+    if (!file) return;
+    setAvatarPreview(URL.createObjectURL(file));
+    try {
+      const formData = new FormData();
+      formData.append('avatar', file);
+      const result = await api.upload<Record<string, unknown>>('/users/avatar', formData);
+      updateUser(result);
+    } catch {
+      setError('Failed to upload avatar');
+    }
+  };
 
   const handleSubmit = async (e: React.FormEvent) => {
     e.preventDefault();
@@ -51,8 +67,9 @@ export function CreateProfilePage() {
 
         <div className="flex justify-center mb-8">
           <div className="relative">
-            <Avatar name={fullName || 'U'} size="xl" />
+            <Avatar name={fullName || 'U'} size="xl" src={avatarPreview} />
-            <button type="button" className="absolute -bottom-1 -right-1 p-2 bg-gradient-to-r from-pink-500 to-primary-600 rounded-full text-white shadow-lg cursor-pointer">
+            <input ref={fileInputRef} type="file" accept="image/*" className="hidden" onChange={handleAvatarChange} />
+            <button type="button" onClick={() => fileInputRef.current?.click()} className="absolute -bottom-1 -right-1 p-2 bg-gradient-to-r from-pink-500 to-primary-600 rounded-full text-white shadow-lg cursor-pointer">
               <Camera className="w-4 h-4" />
             </button>
           </div>

client/src/pages/UpdateProfilePage.tsx

@@ -1,4 +1,4 @@
-import { useState } from 'react';
+import { useState, useRef } from 'react';
 import { useNavigate } from 'react-router-dom';
 import { Camera } from 'lucide-react';
 import { Input } from '../components/ui/Input';
@@ -23,6 +23,20 @@ export function UpdateProfilePage() {
   const [showPhone, setShowPhone] = useState(user?.showPhone ?? true);
   const [showLocation, setShowLocation] = useState(user?.showLocation ?? true);
   const [saving, setSaving] = useState(false);
+  const [avatarPreview, setAvatarPreview] = useState<string | undefined>(user?.avatar || undefined);
+  const fileInputRef = useRef<HTMLInputElement>(null);
+
+  const handleAvatarChange = async (e: React.ChangeEvent<HTMLInputElement>) => {
+    const file = e.target.files?.[0];
+    if (!file) return;
+    setAvatarPreview(URL.createObjectURL(file));
+    try {
+      const formData = new FormData();
+      formData.append('avatar', file);
+      const result = await api.upload<Record<string, unknown>>('/users/avatar', formData);
+      updateUser(result);
+    } catch {}
+  };
 
   const handleSubmit = async (e: React.FormEvent) => {
     e.preventDefault();
@@ -47,8 +61,9 @@ export function UpdateProfilePage() {
 
         <div className="flex justify-center mb-8">
           <div className="relative">
-            <Avatar name={fullName} size="xl" />
+            <Avatar name={fullName} size="xl" src={avatarPreview} />
-            <button type="button" className="absolute -bottom-1 -right-1 p-2 bg-gradient-to-r from-pink-500 to-primary-600 rounded-full text-white shadow-lg cursor-pointer">
+            <input ref={fileInputRef} type="file" accept="image/*" className="hidden" onChange={handleAvatarChange} />
+            <button type="button" onClick={() => fileInputRef.current?.click()} className="absolute -bottom-1 -right-1 p-2 bg-gradient-to-r from-pink-500 to-primary-600 rounded-full text-white shadow-lg cursor-pointer">
               <Camera className="w-4 h-4" />
             </button>
           </div>