diff --git a/scripts/celerity/generate_sprites.php b/scripts/celerity/generate_sprites.php
index 83ca46d766..d967666fd9 100755
--- a/scripts/celerity/generate_sprites.php
+++ b/scripts/celerity/generate_sprites.php
@@ -1,192 +1,194 @@
 #!/usr/bin/env php
 <?php
 
 /*
  * Copyright 2012 Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 
 require_once dirname(dirname(__FILE__)).'/__init_script__.php';
 
 $args = new PhutilArgumentParser($argv);
 $args->setTagline('regenerate CSS sprite sheets');
 $args->setSynopsis(<<<EOHELP
 **sprites**
     Rebuild CSS sprite sheets.
 
 EOHELP
 );
 $args->parseStandardArguments();
 $args->parse(
   array(
     array(
       'name'  => 'source',
       'param' => 'directory',
       'help'  => 'Directory with sprite sources.',
     )
   ));
 
 $srcroot = $args->getArg('source');
 if (!$srcroot) {
   throw new Exception(
     "You must specify a source directory with '--source'.");
 }
 
 $webroot = dirname(phutil_get_library_root('phabricator')).'/webroot/rsrc';
 $webroot = Filesystem::readablePath($webroot);
 
 function glx($x) {
   return (60 + (48 * $x));
 }
 
 function gly($y) {
   return (110 + (48 * $y));
 }
 
 $sheet = new PhutilSpriteSheet();
+$at = '@';
 $sheet->setCSSHeader(<<<EOCSS
 /**
  * @provides autosprite-css
+ * {$at}generated
  */
 
 .autosprite {
   background-image: url(/rsrc/image/autosprite.png);
   background-repeat: no-repeat;
 }
 EOCSS
 );
 
 $menu_normal_template = id(new PhutilSprite())
   ->setSourceFile($srcroot.'/menu_normal_1x.png')
   ->setSourceSize(26, 26);
 
 $menu_hover_template = id(new PhutilSprite())
   ->setSourceFile($srcroot.'/menu_hover_1x.png')
   ->setSourceSize(26, 26);
 
 $menu_selected_template = id(new PhutilSprite())
   ->setSourceFile($srcroot.'/menu_selected_1x.png')
   ->setSourceSize(26, 26);
 
 $menu_map = array(
   ''          => $menu_normal_template,
   '-selected' => $menu_selected_template,
   ':hover'    => $menu_hover_template,
 );
 
 $icon_map = array(
   'help'          => array(4, 19),
   'settings'      => array(0, 28),
   'logout'        => array(3, 6),
   'notifications' => array(5, 20),
   'task'          => array(1, 15),
 );
 
 foreach ($icon_map as $icon => $coords) {
   list($x, $y) = $coords;
   foreach ($menu_map as $suffix => $template) {
     $sheet->addSprite(
       id(clone $template)
         ->setSourcePosition(glx($x), gly($y))
         ->setTargetCSS('.main-menu-item-icon-'.$icon.$suffix));
   }
 }
 
 $app_template_full = id(new PhutilSprite())
   ->setSourceFile($srcroot.'/application_normal_2x.png')
   ->setSourceSize(60, 60);
 
 $app_template_mini = id(new PhutilSprite())
   ->setSourceFile($srcroot.'/menu_normal_1x.png')
   ->setSourceSize(30, 30);
 
 $app_source_map = array(
   '-full' => array($app_template_full, 2),
   ''      => array($app_template_mini, 1),
 );
 
 $app_map = array(
   'differential'    => array(9, 1),
   'fact'            => array(2, 4),
   'mail'            => array(0, 1),
   'diffusion'       => array(7, 13),
   'slowvote'        => array(1, 4),
   'phriction'       => array(1, 7),
   'maniphest'       => array(3, 24),
   'flags'           => array(6, 26),
   'settings'        => array(9, 11),
   'applications'    => array(0, 34),
   'default'         => array(9, 9),
   'people'          => array(3, 0),
   'ponder'          => array(4, 35),
   'calendar'        => array(5, 4),
   'files'           => array(6, 3),
   'projects'        => array(7, 35),
   'daemons'         => array(7, 6),
   'herald'          => array(1, 5),
   'countdown'       => array(7, 5),
   'conduit'         => array(7, 30),
   'feed'            => array(3, 11),
   'paste'           => array(9, 2),
   'audit'           => array(8, 19),
   'uiexample'       => array(7, 28),
   'phpast'          => array(6, 31),
   'owners'          => array(5, 32),
   'phid'            => array(9, 25),
   'diviner'         => array(1, 35),
   'repositories'    => array(8, 13),
 );
 
 $xadj = -1;
 foreach ($app_map as $icon => $coords) {
   list($x, $y) = $coords;
   foreach ($app_source_map as $suffix => $spec) {
     list($template, $scale) = $spec;
     $sheet->addSprite(
       id(clone $template)
         ->setSourcePosition(($xadj + glx($x)) * $scale, gly($y) * $scale)
         ->setTargetCSS('.app-'.$icon.$suffix));
   }
 }
 
 $action_template = id(new PhutilSprite())
   ->setSourcePosition(0, 0)
   ->setSourceSize(16, 16);
 
 $action_map = array(
   'file'        => 'icon/page_white_text.png',
   'fork'        => 'icon/arrow_branch.png',
   'edit'        => 'icon/page_white_edit.png',
   'flag-0'      => 'icon/flag-0.png',
   'flag-1'      => 'icon/flag-1.png',
   'flag-2'      => 'icon/flag-2.png',
   'flag-3'      => 'icon/flag-3.png',
   'flag-4'      => 'icon/flag-4.png',
   'flag-5'      => 'icon/flag-5.png',
   'flag-6'      => 'icon/flag-6.png',
   'flag-7'      => 'icon/flag-7.png',
   'flag-ghost'  => 'icon/flag-ghost.png',
 );
 
 foreach ($action_map as $icon => $source) {
   $sheet->addSprite(
     id(clone $action_template)
       ->setSourceFile($srcroot.$source)
       ->setTargetCSS('.action-'.$icon));
 }
 
 $sheet->generateImage($webroot.'/image/autosprite.png');
 $sheet->generateCSS($webroot.'/css/autosprite.css');
 
 echo "Done.\n";
diff --git a/webroot/rsrc/css/autosprite.css b/webroot/rsrc/css/autosprite.css
index ee0c33254b..3a88bba802 100644
--- a/webroot/rsrc/css/autosprite.css
+++ b/webroot/rsrc/css/autosprite.css
@@ -1,348 +1,349 @@
 /**
  * @provides autosprite-css
+ * @generated
  */
 
 .autosprite {
   background-image: url(/rsrc/image/autosprite.png);
   background-repeat: no-repeat;
 }
 
 .main-menu-item-icon-help {
   background-position: 0px 0px;
 }
 
 .main-menu-item-icon-help-selected {
   background-position: 0px -27px;
 }
 
 .main-menu-item-icon-help:hover {
   background-position: 0px -54px;
 }
 
 .main-menu-item-icon-settings {
   background-position: 0px -81px;
 }
 
 .main-menu-item-icon-settings-selected {
   background-position: 0px -108px;
 }
 
 .main-menu-item-icon-settings:hover {
   background-position: 0px -135px;
 }
 
 .main-menu-item-icon-logout {
   background-position: 0px -162px;
 }
 
 .main-menu-item-icon-logout-selected {
   background-position: 0px -189px;
 }
 
 .main-menu-item-icon-logout:hover {
   background-position: 0px -216px;
 }
 
 .main-menu-item-icon-notifications {
   background-position: 0px -243px;
 }
 
 .main-menu-item-icon-notifications-selected {
   background-position: 0px -270px;
 }
 
 .main-menu-item-icon-notifications:hover {
   background-position: 0px -297px;
 }
 
 .main-menu-item-icon-task {
   background-position: 0px -324px;
 }
 
 .main-menu-item-icon-task-selected {
   background-position: 0px -351px;
 }
 
 .main-menu-item-icon-task:hover {
   background-position: 0px -378px;
 }
 
 .app-differential-full {
   background-position: 0px -405px;
 }
 
 .app-differential {
   background-position: 0px -466px;
 }
 
 .app-fact-full {
   background-position: 0px -497px;
 }
 
 .app-fact {
   background-position: 0px -558px;
 }
 
 .app-mail-full {
   background-position: 0px -589px;
 }
 
 .app-mail {
   background-position: 0px -650px;
 }
 
 .app-diffusion-full {
   background-position: 0px -681px;
 }
 
 .app-diffusion {
   background-position: 0px -742px;
 }
 
 .app-slowvote-full {
   background-position: 0px -773px;
 }
 
 .app-slowvote {
   background-position: 0px -834px;
 }
 
 .app-phriction-full {
   background-position: 0px -865px;
 }
 
 .app-phriction {
   background-position: 0px -926px;
 }
 
 .app-maniphest-full {
   background-position: 0px -957px;
 }
 
 .app-maniphest {
   background-position: 0px -1018px;
 }
 
 .app-flags-full {
   background-position: 0px -1049px;
 }
 
 .app-flags {
   background-position: 0px -1110px;
 }
 
 .app-settings-full {
   background-position: 0px -1141px;
 }
 
 .app-settings {
   background-position: 0px -1202px;
 }
 
 .app-applications-full {
   background-position: 0px -1233px;
 }
 
 .app-applications {
   background-position: 0px -1294px;
 }
 
 .app-default-full {
   background-position: 0px -1325px;
 }
 
 .app-default {
   background-position: 0px -1386px;
 }
 
 .app-people-full {
   background-position: 0px -1417px;
 }
 
 .app-people {
   background-position: 0px -1478px;
 }
 
 .app-ponder-full {
   background-position: 0px -1509px;
 }
 
 .app-ponder {
   background-position: 0px -1570px;
 }
 
 .app-calendar-full {
   background-position: 0px -1601px;
 }
 
 .app-calendar {
   background-position: 0px -1662px;
 }
 
 .app-files-full {
   background-position: 0px -1693px;
 }
 
 .app-files {
   background-position: 0px -1754px;
 }
 
 .app-projects-full {
   background-position: 0px -1785px;
 }
 
 .app-projects {
   background-position: 0px -1846px;
 }
 
 .app-daemons-full {
   background-position: 0px -1877px;
 }
 
 .app-daemons {
   background-position: 0px -1938px;
 }
 
 .app-herald-full {
   background-position: 0px -1969px;
 }
 
 .app-herald {
   background-position: 0px -2030px;
 }
 
 .app-countdown-full {
   background-position: 0px -2061px;
 }
 
 .app-countdown {
   background-position: 0px -2122px;
 }
 
 .app-conduit-full {
   background-position: 0px -2153px;
 }
 
 .app-conduit {
   background-position: 0px -2214px;
 }
 
 .app-feed-full {
   background-position: 0px -2245px;
 }
 
 .app-feed {
   background-position: 0px -2306px;
 }
 
 .app-paste-full {
   background-position: 0px -2337px;
 }
 
 .app-paste {
   background-position: 0px -2398px;
 }
 
 .app-audit-full {
   background-position: 0px -2429px;
 }
 
 .app-audit {
   background-position: 0px -2490px;
 }
 
 .app-uiexample-full {
   background-position: 0px -2521px;
 }
 
 .app-uiexample {
   background-position: 0px -2582px;
 }
 
 .app-phpast-full {
   background-position: 0px -2613px;
 }
 
 .app-phpast {
   background-position: 0px -2674px;
 }
 
 .app-owners-full {
   background-position: 0px -2705px;
 }
 
 .app-owners {
   background-position: 0px -2766px;
 }
 
 .app-phid-full {
   background-position: 0px -2797px;
 }
 
 .app-phid {
   background-position: 0px -2858px;
 }
 
 .app-diviner-full {
   background-position: 0px -2889px;
 }
 
 .app-diviner {
   background-position: 0px -2950px;
 }
 
 .app-repositories-full {
   background-position: 0px -2981px;
 }
 
 .app-repositories {
   background-position: 0px -3042px;
 }
 
 .action-file {
   background-position: 0px -3073px;
 }
 
 .action-fork {
   background-position: 0px -3090px;
 }
 
 .action-edit {
   background-position: 0px -3107px;
 }
 
 .action-flag-0 {
   background-position: 0px -3124px;
 }
 
 .action-flag-1 {
   background-position: 0px -3141px;
 }
 
 .action-flag-2 {
   background-position: 0px -3158px;
 }
 
 .action-flag-3 {
   background-position: 0px -3175px;
 }
 
 .action-flag-4 {
   background-position: 0px -3192px;
 }
 
 .action-flag-5 {
   background-position: 0px -3209px;
 }
 
 .action-flag-6 {
   background-position: 0px -3226px;
 }
 
 .action-flag-7 {
   background-position: 0px -3243px;
 }
 
 .action-flag-ghost {
   background-position: 0px -3260px;
 }