feat: avatars for humans (#273)

* implement avatar backend functionality

* add avatar endpoints

* typo

* implement client side avatar upload and handling

* fixes

* Update go/internal/handler/handler.go

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

* Update js/desktop/src/lib/avatar-image.ts

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

* bug in order

* remove unused component

* fix invalid migration

* fix syntax errors

---------

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

js/desktop/src/features/settings-page.tsx

@@ -11,8 +11,10 @@ import {
   FileText,
   Volume2,
   ArrowLeft,
+  Camera,
 } from 'lucide-react';
-import { Avatar, AvatarFallback } from '@/components/ui/avatar';
+import { HumanAvatar } from '@/components/human-avatar';
+import { AvatarEditDialog } from '@/features/settings/avatar-edit-dialog';
 import { Separator } from '@/components/ui/separator';
 import { Switch } from '@/components/ui/switch';
 import { WindowControls } from '@/components/window-controls';
@@ -88,6 +90,7 @@ export default function SettingsPage() {
   const soundEffectsEnabled = useSoundEffectsStore((s) => s.enabled);
   const setSoundEffectsEnabled = useSoundEffectsStore((s) => s.setEnabled);
   const [version, setVersion] = useState<string>();
+  const [avatarOpen, setAvatarOpen] = useState(false);
 
   useEffect(() => {
     platform.app.getVersion().then(setVersion);
@@ -135,17 +138,30 @@ export default function SettingsPage() {
       <ScrollArea className="flex-1">
         {/* Profile header */}
         <div className="flex items-center gap-3 px-4 py-5">
-          <Avatar size="lg">
-            <AvatarFallback className="bg-primary/10 text-primary font-medium">
-              {initials}
-            </AvatarFallback>
-          </Avatar>
+          <button
+            type="button"
+            onClick={() => setAvatarOpen(true)}
+            className="group relative rounded-full"
+            aria-label="Change profile picture"
+          >
+            <HumanAvatar
+              size="lg"
+              avatarObjectId={user?.avatar_object_id}
+              initials={initials}
+              fallbackClassName="bg-primary/10 text-primary font-medium"
+            />
+            <span className="absolute inset-0 flex items-center justify-center rounded-full bg-black/40 opacity-0 transition-opacity group-hover:opacity-100">
+              <Camera className="size-4 text-white" />
+            </span>
+          </button>
           <div className="min-w-0 flex-1">
             <p className="truncate text-sm font-medium">{user?.email_prefix}</p>
             <Muted className="text-xs">{user?.email}</Muted>
           </div>
         </div>
 
+        <AvatarEditDialog open={avatarOpen} onOpenChange={setAvatarOpen} />
+
         <Separator />
 
         <SettingsGroup title="Notifications">