# Research: 002-axp-reference-capture

## R1 — Live GOLDEN vs offline AXP archive

**Decision**: Treat live GOLDEN `adb` as the compatibility oracle. Offline archive
under `/srv/rom/references/axp/archive/` is supporting reference (docs/git/
images), never a substitute for measured device state.

**Rationale**: Spec FR-003/SC-003; constitution two-device model.

## R2 — NeoBackup / wipe GOLDEN

**Decision**: Out of scope / not a gate (spec + `docs/device-roles.md`).

## R3 — LAB factory rescue source

**Decision (measured 2026-09-13)**: Target build `TQ3A.230805.001.S1` /
`sunfish-tq3a.230805.001.s1-factory-82902ea9.zip`, SHA-256
`82902ea98c80f1a22706279a30d2bc46aa55cbe60703c9a02ba043bd052c6d99`.

Google CDN URL for that zip now returns **404**; sunfish section on
`developers.google.com/android/images` is effectively pruned. Download from
Internet Archive item `sunfish-tq3a.230805.001.s1` and **verify SHA-256** against
the historical Google/Calyx hash before treating it as a rescue image.

**Alternatives**: Other community mirrors only if IA fails; same hash required.

## R4 — Raw artifact location

**Decision**: `/srv/rom/references/axp/{archive,golden,lab,logs}/` on
`rom-dev01`. Git holds redacted Markdown only.

## R5 — Inventory depth

**Decision**: Essential checklist from spec US2; missing items marked
`re-query GOLDEN` — never invent versions/UIDs.

## R6 — Magisk on GOLDEN

**Decision**: Record Magisk/DenyList as **oracle facts**. Project production
root path remains KernelSU-Next in later features; Magisk is not promoted as
our stage.

## R7 — Parallelism with archive rsync

**Decision**: Start laptop→host AXP archive rsync as soon as `001` host is
ready; does not block writing LAB rescue docs; does not wait for phone `adb`.