feat(editor): save leptos island and page aggregate alignment progress

- switch main document flow toward leptos tiptap island host and generated runtime assets

- align page aggregate loading, page head single-source updates, and AI tool result recovery

- add tests and smoke scripts for title sync, AI route recovery, and editor host cutover

wolai-frontend/src/app/globals.css

@@ -130,12 +130,24 @@ body {
 }
 
 /* 调整编辑器内容宽度 */
-.bn-editor {
-  padding-left: 5rem;
-  padding-right: 5rem;
-  max-width: 900px;
-  margin: 0 auto;
-}
+.bn-editor {
+  padding-left: 5rem;
+  padding-right: 5rem;
+  max-width: 900px;
+  margin: 0 auto;
+}
+
+/* 说明：leptos-tiptap / ProseMirror 需要最基础的 white-space 与换行样式，
+   否则浏览器输入与光标行为会不稳定，并触发 ProseMirror 警告。 */
+.ProseMirror {
+  white-space: pre-wrap;
+  word-break: break-word;
+  overflow-wrap: anywhere;
+}
+
+.ProseMirror pre {
+  white-space: pre-wrap;
+}
 
 .dark {
   --background: oklch(0.145 0 0);