The model info returned empty labels array because the pkl file has
no metadata dict. Now extracts labels from model.classes_ or
model.model.classes_ as fallback.
The model was trained on 94-candle sliding windows flattened to 2820
features (94 candles x 30 features). Inference was sending raw per-candle
features (27 columns).
Changes:
- Rewrite preprocessing to return (X, window_times) tuple
- Add sliding window creation with correct feature ordering
- Fill missing columns (average, barCount) with 0 for feature parity
- Fill NaN from indicator warmup with 0 instead of dropping rows
- Always compute all indicators (including MFI) for feature parity
- Update predict and batch predict endpoints for new signature
- Add GET handler to /api/charts/[id] route to fetch chart metadata
- Fix batch prediction to use regular /predict endpoint with database candles
- Remove /predict/batch usage (was designed for file-based predictions)
- Make volume field optional in CandleData model (database candles don't have volume)
- Convert timestamps to ISO dates for batch requests
Known issue: TA-Lib indicators failing with 'input array type is not double'
- May need to ensure candle data is float64/double type before processing
- Change pair and timeframe fields from required to optional
- Frontend only sends candles array, not pair/timeframe metadata
- These fields are only used for logging, not prediction logic
- Update logging to handle None values with 'unknown' fallback
- Fixes 422 validation error on /predict endpoint
