增加完整的应用图标支持

AGENTS.md

@@ -62,6 +62,8 @@ This file is mandatory for AI and coding agents working in this repository. Read
 - Prevent horizontal page overflow, clipped controls, nested scrolling accidents, text overlap, layout shifts, and unbounded result columns. Long Hex, hashes, filenames, and table cells require explicit wrapping or contained scrolling.
 - Version information remains at the bottom of the sidebar and is read from `package.json`. Every page footer displays exactly `Copyright © mid All Rights Reserved.`
 - Do not add a visible link to `/setting`, explanatory marketing copy, login UI, favorites, or sponsorship UI.
+- Preserve the application icon contract under `public/`: `favicon.svg`, a 16/32/48-frame `favicon.ico`, `apple-touch-icon.png` at 180x180, `icon-192.png`, `icon-512.png`, `icon-maskable-512.png`, and `site.webmanifest`. Keep the icon visually aligned with the sidebar brand and keep the maskable artwork inside its safe zone.
+- The manifest is metadata/install-ready only. Do not add a Service Worker, offline cache, install prompt, splash-screen bundle, Safari mask icon, legacy `browserconfig.xml`, redundant Apple sizes, or separate 16/32 PNG favicons unless requirements explicitly change.
 - For UI work, verify a wide desktop, an intermediate width around 801-1040 px, and mobile portrait around 390 x 844 in a real browser. Check direct routes, refresh, navigation, search, `/setting`, both themes, console errors, and network requests.
 
 ## Adding a tool