New features
- AlphaEarth embeddings support (new alpha_earth.py) and integration into model inputs.
- CSV‑based observations supported for training/evaluation/simulation (lookup CSV + per‑station CSVs).
- Batch simulation for GRDC/CSV stations (produce one CSV per station).
- Expanded interactive routed runoff time series and runoff plotting utilities.
Model/Training improvements
- New multi‑branch TCN architecture with multi‑scale windows (45/90/180/365) and static conditioning (AlphaEarth + basin area).
- Area normalization and log scaling integrated into preprocessing and inference pipelines.
- Learning‑rate scheduling options and warmup controls added.
Docs & tooling
- Full Sphinx documentation added (Quickstart, Inputs/Outputs, Model configuration, API reference).
- ReadTheDocs config and docs build assets added.
- README expanded with usage, structure, and examples.