refactor: replace Biome with oxlint + oxfmt

Migrate the entire monorepo from Biome 2.4.7 to oxlint 1.56.0 (linter)
and oxfmt 0.41.0 (formatter) for faster lint/format and broader rule
coverage.

- Add `.oxlintrc.json` with React, TypeScript, unicorn, import plugins
  and correctness/suspicious categories
- Add `.oxfmtrc.json` with 2-space indent, import sorting, and Tailwind
  class sorting (all 30+ custom className attributes migrated)
- Add `docs/.oxlintrc.json` and `docs/.oxfmtrc.json` with Next.js plugin
- Update all 12 workspace package.json scripts: `oxlint`, `oxfmt`,
  `oxfmt --check`
- Add `format:check` turbo task and CI step
- Update VS Code settings/extensions to use `oxc.oxc-vscode`
- Update CI path triggers from `biome.json` to new config files
- Remove all `biome-ignore` comments and fix shadowed variables
- Delete `biome.json` and `docs/biome.json`
- Reformat entire codebase with oxfmt

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/native/metro.config.js

@@ -1,8 +1,6 @@
 const { getDefaultConfig } = require("expo/metro-config");
 const { withUniwindConfig } = require("uniwind/metro");
-const {
-  wrapWithReanimatedMetroConfig,
-} = require("react-native-reanimated/metro-config");
+const { wrapWithReanimatedMetroConfig } = require("react-native-reanimated/metro-config");
 
 /** @type {import('expo/metro-config').MetroConfig} */
 const config = getDefaultConfig(__dirname);