AXP Magisk resurrection track: Speckit 009 port AXP/LOS22 to LOS23.

Ship Magisk like GOLDEN; KernelSU optional recycle only; parallel to sunfish-a16-rom standby.

specs/002-axp-reference-capture/research.md

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+# 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`.