OpenDecision v0.1.2

OpenDecision 0.1.2 keeps ModernBERT as the default model and documents DeBERTa v3 large as an explicit option for Python and server users.

The release also caps direct NLI inputs to the selected model's context window, records the model comparison, and reports the configured model in benchmark output. The standard Choice behavior remains unchanged.

Validation: 55 tests passed; the documentation and package distributions built successfully.