Architecture decision records¶

ADRs record durable local engineering decisions that do not require a full research/API proposal. Create new records as ADR-NNNN-kebab-case-title.md. An accepted ADR is not rewritten except for status and links; a replacement ADR supersedes it.

Existing historical decision documents remain authoritative historical records. The index below gives each a stable ADR identifier without changing its text:

ADR	Historical document	Subject
ADR-0001	docs/24_bottom_mask_provenance_q2_decision.md	Bottom-mask provenance status
ADR-0002	docs/26_ros2_repo_layout_decision.md	ROS 2 in-repository layout
ADR-0003	docs/27_ros2_bundle_loading_decision.md	ROS 2 bundle loading
ADR-0004	docs/28_ros2_rmw_selection_decision.md	ROS 2 middleware selection
ADR-0005	docs/29_rest_grpc_bundle_service_decision.md	REST/gRPC bundle service
ADR-0006	docs/30_triton_inference_server_decision.md	Triton inference-server integration
ADR-0007	docs/41_gauge_policy_design_review.md	Gauge-policy design review
ADR-0008	docs/adr/ADR-0008-rr-dataset-nonfinite-json.md	RR dataset non-finite JSON encoding
ADR-0009	docs/adr/ADR-0009-pypi-audit-local-versions.md	PyPI advisory lookup for local dependency versions

Template¶

# ADR-NNNN — Title

**Status:** proposed | accepted | superseded | deprecated
**Date:** YYYY-MM-DD
**Owners:** maintainer handles
**Supersedes / superseded by:** ADR-NNNN or none

## Context
## Decision
## Consequences
## Alternatives considered
## Verification and rollout

Current semantic decisions:

• ADR-0010 — canonical physical namespace;
• ADR-0011 — SCM4 registry and orthogonal results;
• ADR-0012 — exact versus machine zero;
• ADR-0013 — canonical projective gauge; and
• ADR-0014 — bounded float64 refinement;
• ADR-0015 — retained alpha evidence binding;
• ADR-0016 — result origin and hash-bound execution evidence;
• ADR-0017 — working tensors versus durable snapshots; and
• ADR-0018 — legacy exact-literal zero contract.