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>

packages/ui-shared/src/components/index.ts

@@ -1 +1 @@
-export {};
+export {}

packages/ui-shared/src/composables/index.ts

@@ -1 +1 @@
-export {};
+export {}

packages/ui-shared/src/index.ts

@@ -1,3 +1,3 @@
-export * from "./tokens/index";
-export * from "./composables/index";
-export * from "./components/index";
+export * from './components/index'
+export * from './composables/index'
+export * from './tokens/index'

packages/ui-shared/src/tokens/index.css

@@ -1,6 +1,6 @@
 :root {
-  --geo-font-sans: "IBM Plex Sans", "Aptos", "Segoe UI Variable", "Segoe UI", sans-serif;
-  --geo-font-mono: "JetBrains Mono", "SFMono-Regular", "Cascadia Code", "Consolas", monospace;
+  --geo-font-sans: 'IBM Plex Sans', 'Aptos', 'Segoe UI Variable', 'Segoe UI', sans-serif;
+  --geo-font-mono: 'JetBrains Mono', 'SFMono-Regular', 'Cascadia Code', 'Consolas', monospace;
   --geo-color-bg-primary: #eef3f8;
   --geo-color-bg-secondary: #e4ebf3;
   --geo-color-bg-tertiary: #d6e1ec;
@@ -30,7 +30,7 @@
   --geo-shadow-edge: inset 0 1px 0 rgba(255, 255, 255, 0.6);
 }
 
-html[data-theme="dark"] {
+html[data-theme='dark'] {
   --geo-color-bg-primary: #0a1015;
   --geo-color-bg-secondary: #101820;
   --geo-color-bg-tertiary: #16212c;
@@ -67,7 +67,7 @@ html {
   color-scheme: light;
 }
 
-html[data-theme="dark"] {
+html[data-theme='dark'] {
   color-scheme: dark;
 }
 

packages/ui-shared/src/tokens/index.ts

@@ -1,13 +1,13 @@
 export const themeTokens = {
-  colorBgPrimary: "var(--geo-color-bg-primary)",
-  colorBgSecondary: "var(--geo-color-bg-secondary)",
-  colorTextPrimary: "var(--geo-color-text-primary)",
-  colorTextSecondary: "var(--geo-color-text-secondary)",
-  colorBorder: "var(--geo-color-border)",
-  colorBrand: "var(--geo-color-brand)",
-  colorSuccess: "var(--geo-color-success)",
-  colorWarn: "var(--geo-color-warn)",
-  colorDanger: "var(--geo-color-danger)",
-} as const;
+  colorBgPrimary: 'var(--geo-color-bg-primary)',
+  colorBgSecondary: 'var(--geo-color-bg-secondary)',
+  colorTextPrimary: 'var(--geo-color-text-primary)',
+  colorTextSecondary: 'var(--geo-color-text-secondary)',
+  colorBorder: 'var(--geo-color-border)',
+  colorBrand: 'var(--geo-color-brand)',
+  colorSuccess: 'var(--geo-color-success)',
+  colorWarn: 'var(--geo-color-warn)',
+  colorDanger: 'var(--geo-color-danger)',
+} as const
 
-export type ThemeTokenKey = keyof typeof themeTokens;
+export type ThemeTokenKey = keyof typeof themeTokens