## Problem
Frontend was showing 'connecting network' message on production (pezkuwichain.io) because:
1. WebSocket endpoint was hardcoded to localhost in App.tsx
2. DEFAULT_ENDPOINT in polkadot.ts was not reading environment variables
## Solution
### shared/blockchain/polkadot.ts
- Added getWebSocketEndpoint() function to read VITE_NETWORK and corresponding VITE_WS_ENDPOINT_* env vars
- Changed DEFAULT_ENDPOINT from hardcoded value to call getWebSocketEndpoint()
- Now correctly uses wss://ws.pezkuwichain.io in production
### web/src/App.tsx
- Removed hardcoded endpoint="ws://127.0.0.1:9944" prop from PolkadotProvider
- Now uses DEFAULT_ENDPOINT which reads from environment
### web/vite.config.ts
- Minor formatting improvements (no functional changes)
### CLAUDE_README_KRITIK.md (New file)
- Critical documentation for future Claude instances
- Documents VPS validator setup, bootnode configuration
- Strict warnings not to modify working blockchain
- Troubleshooting commands and procedures
- Frontend deployment steps
## Result
- Production site now correctly connects to wss://ws.pezkuwichain.io
- Environment-based configuration working as expected
- Local dev still uses ws://127.0.0.1:9944
## Files Changed
- shared/blockchain/polkadot.ts: Dynamic endpoint selection
- web/src/App.tsx: Remove hardcoded endpoint
- CLAUDE_README_KRITIK.md: Critical documentation (new)
