Build the OpenDecision v0.1 MVP

[Sunny-commit]

Summary

Build the first OpenDecision MVP: a framework-agnostic typed decision layer for AI agents, with Laya as the initial provider.

Included

• DecisionGuard with normalized choice, score, and noul results
• Pydantic decision contracts and results
• lazy, optional Laya provider
• YAML decision-pack loader and initial tool-risk policy
• LangGraph node and conditional-routing helpers
• minimal FastAPI /v1/decide service
• packaging, CI, tests, examples, README, and contribution guidance

Design choices

• Laya produces decisions and probabilities, not generated explanations
• the core package remains independent of LangGraph and FastAPI
• model weights are loaded lazily
• unit tests use a fake provider and do not download model weights
• documentation calls out calibration and zero-shot limitations

Validation

• pytest: 7 passed
• ruff check .: passed
• python -m compileall opendecision app: passed

Deferred

Dashboard, TypeScript, additional agent-framework adapters, generated explanations, publishing automation, and a full evaluation harness are intentionally outside this MVP.