chore(frontend): introduce prettier + eslint and prune unused code

- Add Prettier 3 with prettier-plugin-organize-imports (sorts/removes unused imports)
- Add ESLint 10 flat config with typescript-eslint + eslint-plugin-vue + eslint-config-prettier
- Add root scripts: format, format:check, lint, lint:fix
- Reformat 257 files across admin-web, ops-web, desktop-client, packages
- Remove unused locals/exports flagged by --noUnusedLocals/--noUnusedParameters
- Fix duplicate localTabLabel key, surrogate-pair regex u-flag, NBSP literal in regex
- Skip server/ (Go) and apps/browser-extension/ (deprecated per ADR)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/admin-web/src/lib/kol-platform-options.ts

@@ -1,13 +1,13 @@
-import { aiPlatformCatalog } from "@geo/shared-types";
+import { aiPlatformCatalog } from '@geo/shared-types'
 
 export interface KolPlatformOption {
-  label: string;
-  value: string;
+  label: string
+  value: string
 }
 
 export function buildKolPlatformOptions(defaultLabel: string): KolPlatformOption[] {
   return [
-    { label: defaultLabel, value: "通用" },
+    { label: defaultLabel, value: '通用' },
     ...aiPlatformCatalog.map((item) => ({ label: item.label, value: item.id })),
-  ];
+  ]
 }