Decision to organize engineering knowledge into three levels with patterns in this repository.

Decision to require AGENTS.md as mandatory entrypoint for AI agents in every repository.

Decision to use Taskfile as the mandatory operational contract for repository operations.

Decision to use .infra/ convention for infrastructure-as-code in application repositories.

Decision to establish a mandatory three-tier tagging taxonomy for all AWS resources to enable cost allocation and operational traceability.

Decision to require application inference profiles for all AWS Bedrock model invocations to enable cost attribution and tagging.

Decision to adopt uv as the standard Python dependency and project management tool, replacing Poetry.

Decision to adopt .context/ as a structured directory for sharing repository knowledge between humans, AI coding agents, and sessions.

Decision to use direct zip upload as the default Lambda code deployment method from CI/CD.

Extend the GitHub Actions Workflows pattern to cover authentication, multi-environment architecture, and topic ownership across CI/CD patterns.

Decisions to extend the Taskfile contract with prescriptive task naming, CI namespace, developer lifecycle, environment handling, and CodeArtifact recipes.

Replaces dev:setup and dev:install with a setup:* namespace that models the distinct lifecycle of first-use setup operations independently from the daily developer workflow.

Formalizes the bootstrap / shared / service layer model inside .infra/, each an isolated Terraform stack, and renames the CI-roles layer to bootstrap.