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.
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# Implementation Plan: AXP LOS22 feature port to LOS23 (resurrection)
**Branch**: `009-axp-los23-port` | **Date**: 2026-09-16 | **Spec**: [spec.md](./spec.md)
**Input**: Feature specification from `/specs/009-axp-los23-port/spec.md`
## Summary
Resurrect **AXP.OS Pro on LOS22 / GOLDEN** as a single shippable LineageOS
23.2 / Android 16 `sunfish` ROM on **LAB**: vanilla `003` base + full AXP
capability set (Google stack, selectable spoofing, Island banking workflow,
selectable call-recording unlock, Magisk like GOLDEN, bundled usability apps,
GOLDEN-class hardening/signing/AVB posture).
**Explicit exceptions:** LOS23 WebView default (Aosmium EOL) with unlocked
provider chooser; Phonesky = project's recent patched artifact (reconsider if
GOLDEN-class fixes missing); KernelSU (`007`) out of ship for now with optional
recycle of existing functional kernels (FR-016).
**Approach:** reuse proven `004`/`005`/`008` runbooks and `vendor/sunfish-a16`
packaging where they already match; replace the KernelSU ship path with
AXP-style Magisk preinstall (newest Magisk); pin newest stable microG and
bundled apps; keep Phonesky on the existing host pipeline; measure Magisk
“preinstalled but not fully activated” behaviour on GOLDEN before freezing LAB
setup docs.
## Technical Context
**Language/Version**: Android product makefiles / Soong; Java/Kotlin Settings +
Dialer + frameworks patches; bash runbooks on `rom-dev01`
**Primary Dependencies**: LOS 23.2 sunfish tree; microG + GSF releases; project
patched Phonesky host artifacts; Magisk (newest stable that works on this
stack); Island; AXP/GOLDEN inventory (`002`); EXTENDROM call-rec reference;
existing `vendor/sunfish-a16` overlays/patches from `004`/`005`/`008`
**Storage**: Host `/srv/rom/prebuilts/`, `/srv/rom/secrets/`,
`/srv/rom/artifacts/009-axp-los23-port/`; meta-repo docs + `vendor/sunfish-a16`
scripts (no proprietary APKs in Git)
**Testing**: LAB flash/`adb`; microG Self-Check; Play install; Island +
Swissquote/Yuh; Magisk DenyList-class; DO toggles; version-pin record
**Target Platform**: Pixel 4a LAB `11231JEC207477`; Android 16 / LOS 23.2
**Project Type**: Android custom ROM (product overlay + attributable patches)
**Performance Goals**: N/A (daily-driver correctness / parity)
**Constraints**: LAB only; no GOLDEN flash; no Phonesky bytes in Git; Magisk
ship root (not KernelSU); newest stables except Phonesky artifact rule;
attributable reversible changes; long builds detached on `rom-dev01`
**Scale/Scope**: Full AXP resurrection surface in one feature (Google stack,
toggles, Magisk, bundled apps, hardening/signing class); **parallel track**
to the standby KernelSU / split roadmap (`004`–`008`/`007`), reusing their
artifacts without deleting that track
## Constitution Check
*GATE: Must pass before Phase 0 research. Re-check after Phase 1 design.*
| Gate | Status |
|------|--------|
| LAB only; never GOLDEN | pass |
| Spec-as-source for active feature requirements | pass (`009` normative for ship) |
| Functionality first; AXP compatibility oracle | pass (resurrection goal) |
| No proprietary Google APKs / secrets in Git | pass (host paths) |
| Phonesky priv-app; no FakeStore primary | pass |
| Restricted selectable spoofing (not open platform) | pass (reuse `005` class) |
| Native call-rec unlock; re-validate A16 | pass (reuse `008` / EXTENDROM) |
| Prefer native over LSPosed/Zygisk modules for ROM features | pass |
| Small attributable reversible changes | pass (staged integrate; known-good images) |
| Base = LOS 23.2 sunfish stack (no unrelated prebuilt kernel) | pass |
| Constitution default root = KernelSU; no Magisk production stage | **variance** — see Complexity Tracking (owner ship decision in `009`) |
| Signing/AVB historically `011` | **variance** — GOLDEN-class signing/AVB posture pulled into `009` acceptance (may stage inside feature) |
**Post-design**: Magisk ship + signing/AVB-in-`009` remain justified variances;
KernelSU recycle stays optional (FR-016). Recommend a later constitution
amendment to align Root architecture text with Magisk resurrection — not
blocking this plan.
## Project Structure
### Documentation (this feature)
```text
specs/009-axp-los23-port/
├── plan.md # this file
├── research.md # Phase 0
├── data-model.md # Phase 1
├── quickstart.md # Phase 1
├── contracts/
│ ├── packages.md
│ ├── toggles-surface.md
│ ├── magisk-preinstall.md
│ ├── webview-surface.md
│ └── acceptance-gates.md
└── tasks.md # /speckit-tasks (not this command)
```
### Host + tree
```text
# Meta-repo
vendor/sunfish-a16/ # product mk, permissions, patch apply
docs/002-golden-inventory.md
docs/004-phonesky-runbook.md
docs/005-spoofing-runbook.md
docs/008-call-rec-flag-secure-runbook.md
docs/axp-pro-parity.md # non-normative; remap rows → 009 after tasks
# rom-dev01
/srv/rom/src/lineage/ # LOS 23.2 sunfish tree
/srv/rom/prebuilts/microg/ # newest microG + GSF
/srv/rom/prebuilts/phonesky/ # project patched Phonesky (+ XMLs)
/srv/rom/prebuilts/magisk/ # Magisk artifacts for AXP-like preinstall
/srv/rom/prebuilts/axp-apps/ # bundled usability apps (newest stables)
/srv/rom/secrets/ # Phonesky / later release keys (never Git)
/srv/rom/artifacts/009-axp-los23-port/ # images, hashes, version pins, LAB evidence
/srv/rom/artifacts/007-…/ # optional KSU kernels (recycle only)
```
**Structure Decision**: Same meta-repo pattern as `004`/`005`/`008` —
attributable packaging and patches via `vendor/sunfish-a16`; heavy tree and
proprietary blobs only on `rom-dev01`. No megapatch dumps in Git.
## Complexity Tracking
| Violation | Why Needed | Simpler Alternative Rejected Because |
|-----------|------------|--------------------------------------|
| Magisk as ship root (constitution prefers KernelSU; forbids Magisk production stage) | Owner chose **AXP resurrection** = Magisk like GOLDEN (`009` FR-010); KSU out of ship for now | Keeping KernelSU abandons “todo igual que AXP”; Magisk A/B-only diagnostic does not meet ship parity |
| GOLDEN-class hardening/signing/AVB inside `009` (was split `011`–`013`) | Owner Q2 = full resurrection, not apps-only | Deferring signing/hardening recreates the decide-scatter `009` was meant to end |
| Single Magisk-resurrection feature owns large surface | Simplifies current ship without deleting standby KSU track | Re-merging both tracks into one ambiguous roadmap recreates decide-scatter |
## Phase 0 / Phase 1
See `research.md`, `data-model.md`, `contracts/*`, `quickstart.md`.