fix: 修正 logo 中 N 和 G 字母造型

N 添加对角线笔画（█▄ █），G 添加内横杠（█ ▀█），
避免与 O 字母造型雷同。同步更新 ui.ts 中的硬编码 wordmark。

packages/app/public/_headers

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+/assets/*.js
+  Content-Type: application/javascript
+
+/assets/*.mjs
+  Content-Type: application/javascript
+
+/assets/*.css
+  Content-Type: text/css
+
+/*.js
+  Content-Type: application/javascript
+
+/*.mjs
+  Content-Type: application/javascript
+
+/*.css
+  Content-Type: text/css

packages/app/public/apple-touch-icon-v3.png

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+../../ui/src/assets/favicon/apple-touch-icon-v3.png

packages/app/public/apple-touch-icon.png

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+../../ui/src/assets/favicon/apple-touch-icon.png

packages/app/public/favicon-96x96-v3.png

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+../../ui/src/assets/favicon/favicon-96x96-v3.png

packages/app/public/favicon-96x96.png

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+../../ui/src/assets/favicon/favicon-96x96.png

packages/app/public/favicon-v3.ico

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+../../ui/src/assets/favicon/favicon-v3.ico

packages/app/public/favicon-v3.svg

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+../../ui/src/assets/favicon/favicon-v3.svg

packages/app/public/favicon.ico

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+../../ui/src/assets/favicon/favicon.ico

packages/app/public/favicon.svg

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+../../ui/src/assets/favicon/favicon.svg

packages/app/public/oc-theme-preload.js

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+;(function () {
+  var key = "opencode-theme-id"
+  var themeId = localStorage.getItem(key) || "oc-2"
+
+  if (themeId === "oc-1") {
+    themeId = "oc-2"
+    localStorage.setItem(key, themeId)
+    localStorage.removeItem("opencode-theme-css-light")
+    localStorage.removeItem("opencode-theme-css-dark")
+  }
+
+  var scheme = localStorage.getItem("opencode-color-scheme") || "system"
+  var isDark = scheme === "dark" || (scheme === "system" && matchMedia("(prefers-color-scheme: dark)").matches)
+  var mode = isDark ? "dark" : "light"
+
+  document.documentElement.dataset.theme = themeId
+  document.documentElement.dataset.colorScheme = mode
+
+  // Update theme-color meta tag to match app color scheme
+  var metas = document.querySelectorAll("meta[name='theme-color']")
+  if (metas.length > 0) metas[0].setAttribute("content", isDark ? "#131010" : "#F8F7F7")
+
+  if (themeId === "oc-2") return
+
+  var css = localStorage.getItem("opencode-theme-css-" + mode)
+  if (css) {
+    var style = document.createElement("style")
+    style.id = "oc-theme-preload"
+    style.textContent =
+      ":root{color-scheme:" +
+      mode +
+      ";--text-mix-blend-mode:" +
+      (isDark ? "plus-lighter" : "multiply") +
+      ";" +
+      css +
+      "}"
+    document.head.appendChild(style)
+  }
+})()

packages/app/public/site.webmanifest

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+../../ui/src/assets/favicon/site.webmanifest

packages/app/public/social-share-zen.png

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+../../ui/src/assets/images/social-share-zen.png

packages/app/public/social-share.png

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+../../ui/src/assets/images/social-share.png

packages/app/public/web-app-manifest-192x192.png

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+../../ui/src/assets/favicon/web-app-manifest-192x192.png

packages/app/public/web-app-manifest-512x512.png

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+../../ui/src/assets/favicon/web-app-manifest-512x512.png