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>

go/internal/human/service_test.go

@@ -56,4 +56,19 @@ func TestHumanService(t *testing.T) {
 	assert.NotEqual(t, createdHuman.ID, anotherHuman.ID)
 	assert.Equal(t, "[email protected]", anotherHuman.Email)
 	assert.Equal(t, "another", anotherHuman.EmailPrefix)
+
+	// Test avatar handling
+	objectID := "obj_xxx"
+	err = svc.UpdateAvatar(ctx, anotherHuman.ID, objectID)
+	assert.NoError(t, err)
+
+	anotherHuman, err = svc.GetByID(ctx, anotherHuman.ID)
+	assert.NoError(t, err)
+	assert.Equal(t, objectID, *anotherHuman.AvatarObjectID)
+
+	err = svc.DeleteAvatar(ctx, anotherHuman.ID)
+	assert.NoError(t, err)
+	anotherHuman, err = svc.GetByID(ctx, anotherHuman.ID)
+	assert.NoError(t, err)
+	assert.Nil(t, anotherHuman.AvatarObjectID)
 }