主题与字号从页面顶栏搬进设置页的「外观」，顶部导航加上预设入口。

顶栏那套汉堡菜单在每页都要单独挂载、样式也重复，收进设置页后只剩一处改；顺手把「整组都没有曾用型号」的配置组整组收起，不再留空卡片。

web/app.js

@@ -23,17 +23,7 @@ import {
   isModuleOpeningWaiting,
   renderQuestionsCard,
 } from "./questions-ui.js";
-import {
-  applyColorTheme,
-  bumpUiFontScale,
-  getStoredColorTheme,
-  getStoredUiFontScale,
-  initColorTheme,
-  initUiFontScale,
-  themeById,
-  UI_FONT_SCALE_MAX,
-  UI_FONT_SCALE_MIN,
-} from "./theme.js";
+import { initColorTheme, initUiFontScale } from "./theme.js";
 import {
   applyMarkdownRender,
   initMarkdownRender,
@@ -1366,29 +1356,6 @@ function syncMarkdownMenuUi() {
   });
 }
 
-function syncThemeMenuUi() {
-  const colorId = document.documentElement.getAttribute("data-color-theme") || getStoredColorTheme();
-  const percent = getStoredUiFontScale();
-  const colorMeta = themeById(colorId);
-  const sum = $("theme-menu-sum");
-  if (sum) {
-    sum.title = `${colorMeta.name} · 字号 ${percent}`;
-    if (!sum.querySelector(".hamburger-icon")) {
-      sum.innerHTML = `<span class="hamburger-icon" aria-hidden="true"></span>`;
-    }
-  }
-  document.querySelectorAll("[data-color-theme].more-theme-item").forEach((btn) => {
-    btn.classList.toggle("is-active", btn.getAttribute("data-color-theme") === colorMeta.id);
-  });
-  const valueEl = $("theme-font-scale-value");
-  if (valueEl) valueEl.textContent = String(percent);
-  const minus = document.querySelector("[data-font-scale-bump='-1']");
-  const plus = document.querySelector("[data-font-scale-bump='1']");
-  if (minus) minus.disabled = percent <= UI_FONT_SCALE_MIN;
-  if (plus) plus.disabled = percent >= UI_FONT_SCALE_MAX;
-  syncMarkdownMenuUi();
-}
-
 function stashComposerDraftFromDom() {
   if (skipComposerStash) {
     skipComposerStash = false;
@@ -4598,26 +4565,6 @@ $("btn-save-instance")?.addEventListener("click", () => {
   void saveCurrentInstance();
 });
 
-$("theme-menu")?.addEventListener("click", (e) => {
-  const menu = $("theme-menu");
-  if (!menu) return;
-  const colorBtn = e.target.closest("[data-color-theme]");
-  if (colorBtn && menu.contains(colorBtn)) {
-    e.preventDefault();
-    applyColorTheme(colorBtn.getAttribute("data-color-theme"));
-    syncThemeMenuUi();
-    menu.removeAttribute("open");
-    return;
-  }
-  const bumpBtn = e.target.closest("[data-font-scale-bump]");
-  if (bumpBtn && menu.contains(bumpBtn)) {
-    e.preventDefault();
-    e.stopPropagation();
-    bumpUiFontScale(bumpBtn.getAttribute("data-font-scale-bump"));
-    syncThemeMenuUi();
-  }
-});
-
 $("composer")?.addEventListener("click", (e) => {
   const menu = e.target.closest("#composer-more-menu");
   if (!menu) return;
@@ -4764,7 +4711,7 @@ async function init() {
   initUiFontScale();
   initMarkdownRender();
   initPlayAuxLlmBubbles();
-  syncThemeMenuUi();
+  syncMarkdownMenuUi();
   try {
     await Promise.all([loadBooks(), loadPersonas(), loadApiProfiles()]);
     if (books.length) {