feat(ui): improve readability and fix workspace regressions

Separate interface typography from document text and enlarge controls across the workspace and public reader. Keep tree menus within the viewport and make constrained dialogs scrollable.

Preserve nested image references, escape moved link paths, synchronize note creation and daily-note opening, and hydrate shared headings. Add regression coverage for settings and workspace behavior.

web/src/app/workspace.ts

@@ -481,7 +481,11 @@ export function revealPending(v: EditorView, path: string): boolean {
 
 export async function openNote(path: string) {
   ws.view = 'notes'
+  ws.images = null
   ws.sidebarOpen = false
+  // 目录中的新笔记先乐观显示，读取前须等它真正创建成功。
+  const pending = creating.get(path)
+  if (pending && !(await pending)) return
   if (tabOf(path)) {
     ws.active = path
     return
@@ -672,6 +676,8 @@ const creating = new Map<string, Promise<boolean>>()
 
 /** 在指定路径新建空笔记并打开，返回是否成功；不存在的上级目录由服务器创建 */
 export async function createNoteAt(path: string, content = ''): Promise<boolean> {
+  ws.view = 'notes'
+  ws.images = null
   const done = createNoteFile(path, content)
   creating.set(path, done)
   try {
@@ -692,7 +698,6 @@ async function createNoteFile(path: string, content: string): Promise<boolean> {
       ws.tabs.push({ path, rev, status: 'ready', dirty: false })
       editorStates.set(path, buildState(path, content))
       ws.active = path
-      ws.view = 'notes'
       return true
     } catch (err) {
       ws.entries = ws.entries.filter((e) => !added.includes(e.path))
@@ -1029,7 +1034,7 @@ export async function startWorkspace() {
   )
   // 字号、正文宽度变化后行高随之改变，编辑器需要重新测量
   watch(
-    () => [settings.fontSize, settings.contentWidth, settings.sidebarWidth, settings.textFont, settings.codeFont, settings.lineHeight, settings.paragraphSpacing],
+    () => [settings.uiFontSize, settings.fontSize, settings.contentWidth, settings.sidebarWidth, settings.textFont, settings.codeFont, settings.lineHeight, settings.paragraphSpacing],
     () => view?.requestMeasure(),
   )
   watch(