新增后台Dashboard并修正画板规范图选择

新增后台 Dashboard 默认入口、日周月筛选和运营汇总页签

补充后台 Dashboard 数据契约、接口统计和文档

修正画板角色与图标规范图选择、缓存和提示状态

修复创作页桌面导航类型收窄错误

更新 Codex 环境初始化脚本和相关回归测试记录

src/index.css

@@ -3202,18 +3202,29 @@ html[data-mobile-keyboard-open='true'] .platform-mobile-bottom-dock {
   display: block;
   overflow: hidden;
   border-radius: inherit;
-  background:
-    linear-gradient(
-      90deg,
-      transparent,
-      rgba(255, 255, 255, 0.62),
-      transparent
-    ),
-    rgba(226, 232, 240, 0.72);
-  animation: image-canvas-generation-scan 1.45s linear infinite;
+  background: rgba(226, 232, 240, 0.72);
   pointer-events: none;
 }
 
+.project-gallery__canvas-cover-loading::before,
+.image-canvas-editor__layer-image-loading::before {
+  position: absolute;
+  top: 0;
+  bottom: 0;
+  left: -64%;
+  width: 64%;
+  background: linear-gradient(
+    90deg,
+    transparent,
+    rgba(255, 255, 255, 0.62),
+    transparent
+  );
+  content: '';
+  transform: translateX(-100%);
+  animation: image-canvas-generation-scan 1.45s linear infinite;
+  will-change: transform;
+}
+
 .project-gallery__canvas-cover-image {
   position: relative;
   z-index: 1;
@@ -5771,10 +5782,10 @@ html[data-mobile-keyboard-open='true'] .platform-mobile-bottom-dock {
 
 @keyframes image-canvas-generation-scan {
   from {
-    transform: translateX(-65%);
+    transform: translateX(-100%);
   }
   to {
-    transform: translateX(65%);
+    transform: translateX(260%);
   }
 }
 
@@ -8379,6 +8390,16 @@ button.image-canvas-editor__reference-chip:disabled {
   transform: translateX(-50%);
 }
 
+.image-canvas-editor__reference-pick-toast {
+  position: absolute;
+  top: 1rem;
+  left: 50%;
+  z-index: 72;
+  max-width: min(24rem, calc(100% - 2rem));
+  transform: translateX(-50%);
+  pointer-events: none;
+}
+
 .image-canvas-editor__generate-submit {
   justify-self: end;
 }