# HF Space State Persistence Issue

## Problem
RAM usage and rewards stay the same after pressing step in HF Space app, regardless of action type/intensity.

## Root Cause Analysis
✅ **Backend is working correctly** - direct environment tests confirm:
- Step 1 (reduce_ram 0.8): 80% → 72% ✓
- Step 2 (reduce_ram 0.8): 72% → 64% ✓
- Rewards update correctly: 0.080 each step ✓

❌ **Issue is in HF Space app request handling:**
- Each HTTP POST request may be creating a new environment instance
- State is not persisting across requests
- Session management might not be working correctly

## Solution

### For HF Space Users:
1. **Clear browser cache** - Sometimes old state is cached
2. **Use WebSocket /ws endpoint** instead of REST (this should be automatic)
3. **Check browser console** for HTTP 422 errors
4. **Refresh the page completely** before starting new episode

### For Developers:
The OpenEnv framework manages this automatically via:
```
POST /reset → Creates new environment instance
WebSocket /ws → Maintains session state across multiple steps
POST /step → Updates persistent environment state
```

The 422 errors in server logs indicate malformed requests from HF Space. Check:
1. Request body format matches EnergyOptimizationAction schema
2. Content-Type header is application/json
3. Session/connection is properly maintained

## Verification (Local Testing)
✅ Direct Python test: PASSED
✅ Environment state updates: CONFIRMED
✅ Reward calculation: WORKING
✅ RAM reduction logic: FUNCTIONAL

```
Test Summary:
- Reset: RAM=80%, Energy=8.0
- Step1: RAM→72%, Reward=0.08
- Step2: RAM→64%, Reward=0.08
- Status: ✅ WORKING CORRECTLY
```

## Next Steps
1. Rebuild HF Space Docker image to ensure latest code
2. Test with curl/Postman to verify API works
3. Check WebSocket connection in browser dev tools