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factory/vibe/ADR/README.md
Gabriel Radureau 23d8bc9231 docs(adr): ADR-0003 — sandbox state lifecycle (iso-prod seed, reset & prod-write isolation)
Records how erp-sandbox's DATA is seeded, reset, and kept structurally
incapable of harming prod — the application-data-layer complement to ADR-0001
(which rejected an in-cluster sandbox for INFRA rehearsal) and the lifecycle for
the erp-sandbox instance ADR-0002 stood up.

Decision: (1) iso-prod golden via read-only pg_dump of prod erp, app-scoped to
llx_*; (2) reset = DROP OWNED BY erp_sandbox_role CASCADE + pg_restore
--no-owner --role=erp_sandbox_role into the EXISTING db (no DROP/CREATE DATABASE,
no CREATEDB, no superuser; provisioner-owned infra objects like the pgbouncer
user_lookup function are left untouched); (3) prod-write isolation as a
structural invariant (superuser only in human-gated postgres.yaml CI; DROP
DATABASE gated by ownership — erp_sandbox_role owns only erp-sandbox, never prod
erp/erp_role; sandbox-scoped Dolibarr key; membership-only runtime creds;
host-guard; resettability); plus a human-gated promote via the read-only
dolibarr-data-snapshot diff under a separate prod-write credential.

The reset mechanism + the integrity invariant were validated against the live
erp-sandbox: DROP OWNED BY erp_sandbox_role + app-scoped pg_restore round-trips
to the golden checkpoint using only erp_sandbox_role membership (superuser=false,
createdb=false, not a member of erp_role), proving prod is structurally
unreachable from the sandbox credential.

Drafted via a clean-context agent; mechanism refined from a live prototype.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-06-28 20:21:00 +02:00

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[vibe](../README.md) > **ADR**
# Architecture Decision Records
> **Status**: 🟢 Active
> **Last Updated**: 2026-06-28
> **Related**: [vibe/PRD](../PRD/README.md) · [vibe/Investigations](../investigations/README.md)
> **Historical**: [doc/adr](../../doc/adr/README.md) (foundational infra) · [ansible/.../docs/adr](../../ansible/arcodange/factory/docs/adr/) (dated infra ADRs)
`vibe/ADR/` is the **canonical home for Architecture Decision Records going forward**. The format is MADR-lite: one short, self-contained Markdown file per decision, focused on the *why* rather than the *how*. Use the [`_template.md`](_template.md) skeleton to start a new one.
## Where ADRs live
There are three ADR locations in this repo. Only the first accepts new records; the other two are read-only history kept for context.
| Location | Role | Accepts new ADRs? |
| --- | --- | --- |
| `vibe/ADR/` (this folder) | Canonical, MADR-lite, going forward | ✅ Yes |
| [`doc/adr/`](../../doc/adr/README.md) | Foundational infrastructure ADRs (DNS, k3s, CI/CD, Vault, telegram-gateway auth) | ❌ Historical |
| [`ansible/arcodange/factory/docs/adr/`](../../ansible/arcodange/factory/docs/adr/) | Dated infra ADRs (network, CI/CD, Longhorn PVC recovery, internal DNS) | ❌ Historical |
When a new decision *supersedes* one of the historical records, write the new ADR here, set the old one's status note to `Superseded by ADR-NNNN`, and cross-link both ways.
## Rules
- **One file per decision**, named `NNNN-kebab-title.md` (zero-padded sequence, e.g. `0001-safe-prod-like-environment.md`).
- **The body is immutable once `Accepted`.** A decision is a historical fact: do not rewrite the Context/Decision/Consequences after acceptance. The *only* mutation allowed on an accepted ADR is its **status** (e.g. flipping `Accepted``Superseded`).
- **Statuses**: `Proposed` (under discussion) → `Accepted` (decided, body frozen) → `Superseded` (replaced; points to the successor ADR). A `Proposed` ADR may still be edited freely.
- **No-tombstone rule.** Each file reads as currently true. Never leave "previously X, now Y", changelog lines, or "updated to ..." notes inside an ADR — git history is the audit trail. A superseded ADR keeps its original frozen body; the supersession is recorded only in its status line and the successor's References.
- **PR cross-link both ways.** The ADR References section links the PR that introduced it; the PR description links back to the ADR. Keep links bidirectional.
## Index
| # | Title | Status | Date |
| --- | --- | --- | --- |
| [0001](0001-safe-prod-like-environment.md) | Safe, production-like environment | 🟢 Accepted | 2026-06-23 |
| [0002](0002-per-application-environments.md) | Per-application environments | 🟢 Accepted | 2026-06-25 |
| [0003](0003-sandbox-state-lifecycle.md) | Sandbox state lifecycle | 🟢 Accepted | 2026-06-28 |
## Rules to contribute
1. Copy [`_template.md`](_template.md) to `NNNN-kebab-title.md` using the next free sequence number and delete the top HTML-comment note.
2. Fill in the blockquote (Status/Date/Deciders), then Context, Decision, Consequences, Alternatives considered, QA & validation, References.
3. Open the ADR with status `Proposed`. Flip it to `Accepted` once the decision is settled — and from that point treat the body as frozen.
4. Add a row to the Index table above (newest at the bottom to preserve chronological numbering).
5. In the PR that lands the ADR, link to the ADR file; in the ADR's References, link back to the PR. Bidirectional links are mandatory.
6. If this ADR supersedes a historical one in `doc/adr/` or the Ansible ADR folder, update the old record's status note and cross-reference both directions.