# Architecture Decision Records

Each ADR captures a single architectural decision: the context, the decision itself, the consequences, and the alternatives considered. ADRs are immutable once accepted. Superseded ADRs stay in this folder with a pointer to the newer ADR.

## Status definitions

- **PROPOSED**: drafted, awaiting decision
- **ACCEPTED**: decision is in effect
- **SUPERSEDED**: replaced by a later ADR (link forward)
- **DEPRECATED**: no longer in effect, no replacement

## Index

| ADR | Title | Status |
|-----|-------|--------|
| [001](ADR-001-asset-as-platform-contract.md) | Asset model is the platform contract | ACCEPTED |
| [002](ADR-002-plugin-versioning.md) | Plugin contract versioning (semver) | ACCEPTED |
| [003](ADR-003-plugin-distribution.md) | Plugin distribution model | ACCEPTED |
| [004](ADR-004-deployment-topology.md) | Deployment topology (per-site instances) | ACCEPTED |
| [005](ADR-005-equipment-vs-measuringtools.md) | Equipment vs measuringtools plugin scope | ACCEPTED |
| [006](ADR-006-collector-contract.md) | Plugin collector contract pattern | ACCEPTED |
| [007](ADR-007-product-versioning-and-releases.md) | Product versioning and releases | ACCEPTED |
| [008](ADR-008-plugin-migration-ownership.md) | Plugin migration ownership (per-plugin chains) | ACCEPTED |
| [009](ADR-009-frontend-plugin-gating.md) | Frontend plugin route gating | ACCEPTED |
| [010](ADR-010-frontend-plugin-hooks.md) | Frontend plugin hook contract | ACCEPTED |
| [011](ADR-011-machines-rename.md) | Machines rename + modeltypes retyping | ACCEPTED |
| [012](ADR-012-geenforce-manifest-ownership.md) | GE-Enforce manifest ownership in shopdb | ACCEPTED |
| [013](ADR-013-plugin-catalog-and-lean-builds.md) | Plugin catalog, curated shelf, and lean per-site builds | PROPOSED |
| [014](ADR-014-schema-lean-per-site.md) | Schema-lean per-site builds (retire cross-plugin FKs, prune not-installed plugin tables) | ACCEPTED |
| [015](ADR-015-site-specific-configuration.md) | Where a site's own data is allowed to live (setting, site directory, or seed) | ACCEPTED |
| [016](ADR-016-credential-delivery.md) | Credential delivery to the fleet (ShopDB-resolved targeting, encrypted at rest) | ACCEPTED |

## Authoring

When proposing a new decision, copy the most recent ADR as a template, increment the number, and update this index. Do not edit accepted ADRs in place; supersede them with a new one.
