feat: update CLAUDE.md to include frontend tech

Signed-off-by: Yeganathan S <63534555+skwowet@users.noreply.github.com>

Author: skwowet

CLAUDE.md

@@ -13,6 +13,8 @@ The codebase started as crowd.dev, an open-source startup later acquired by the
 
 TypeScript, Node.js, Express, PostgreSQL (pg-promise), Temporal, Kafka, Redis, OpenSearch, Zod, Bunyan, AWS S3.
 
+Vue 3, Vite, Tailwind CSS, Element Plus, Pinia, TanStack Vue Query, Axios.
+
 Package manager is **pnpm**. Monorepo managed via pnpm workspaces.
 
 ## Codebase structure