chore: ignore .claude/ in ESLint config (#1400)

The root lint script is `eslint .`, and lint-staged runs that same
whole-repo command on any staged ts/js/mjs file. ESLint flat config does
not auto-ignore dot-directories, so from the main checkout ESLint walks
into .claude/worktrees/<name>/, where each worktree holds a full checkout
with its own in-progress code — producing failures unrelated to the
change being committed. Nothing under .claude/ needs linting, and
linting inside a worktree is unaffected.

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: sorccu

eslint.config.mjs

@@ -43,6 +43,9 @@ const checklyStyle = {
 
 export default defineConfig([
   globalIgnores([
+    // Holds git worktrees, each a full checkout of the repo with its own
+    // in-progress code that must not be linted as part of this checkout.
+    '**/.claude/',
     '**/dist/',
     `**/gen/`,
     '**/__checks__/**/*.spec.{js,ts,mjs}',