docs: define Pi-first agent contract - #35

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-node@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Global 'Error' loses type safety as untagged errors merge together in the Effect failure channel. Consider using a tagged error and optionally wrapping the original in a 'cause' property. effect(globalErrorInEffectFailure)

Global 'Error' loses type safety as untagged errors merge together in the Effect failure channel. Consider using a tagged error and optionally wrapping the original in a 'cause' property. effect(globalErrorInEffectFailure)

Global 'Error' loses type safety as untagged errors merge together in the Effect failure channel. Consider using a tagged error and optionally wrapping the original in a 'cause' property. effect(globalErrorInEffectFailure)

Global 'Error' loses type safety as untagged errors merge together in the Effect failure channel. Consider using a tagged error and optionally wrapping the original in a 'cause' property. effect(globalErrorInEffectFailure)

Global 'Error' loses type safety as untagged errors merge together in the Effect failure channel. Consider using a tagged error and optionally wrapping the original in a 'cause' property. effect(globalErrorInEffectFailure)

Global 'Error' loses type safety as untagged errors merge together in the Effect failure channel. Consider using a tagged error and optionally wrapping the original in a 'cause' property. effect(globalErrorInEffectFailure)

Global 'Error' loses type safety as untagged errors merge together in the Effect failure channel. Consider using a tagged error and optionally wrapping the original in a 'cause' property. effect(globalErrorInEffectFailure)

Global 'Error' loses type safety as untagged errors merge together in the Effect failure channel. Consider using a tagged error and optionally wrapping the original in a 'cause' property. effect(globalErrorInEffectFailure)

Global 'Error' loses type safety as untagged errors merge together in the Effect failure channel. Consider using a tagged error and optionally wrapping the original in a 'cause' property. effect(globalErrorInEffectFailure)