chore: update pnpm workspace for new feature structure

Add workspace patterns for feature-sliced architecture:
- features/*/react: React packages within features
- features/*/client/*: Client packages (e.g., TypeScript clients)

Update pnpm-lock.yaml with new dependencies.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

pnpm-workspace.yaml

@@ -9,6 +9,8 @@ packages:
   - 'features/*/shared'
   - 'features/*/worker'
   - 'features/*/plugin-*'
+  - 'features/*/react'
+  - 'features/*/client/*'
 
   # Cross-layer feature packages (frontend + backend combined)
   - 'features/payments'