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docs(naming): adopt OS / Enhanced product-line framing + align with existing repos

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Two product lines, named to make scope obvious to buyers:
- 🔒 SilverMetal OS — we ship the operating system or ROM
  (Linux, Pixel, Samsung-unlocked, Motorola-unlocked)
- 🛡️ SilverMetal Enhanced — we harden the OS the device already runs
  (Windows, macOS, iOS, generic Android)

Repo alignment:
- SilverVPN already exists as a SilverLABS product (server + MAUI client +
  Linux client + tunnel service). stack/vpn/ is now an integration pointer
  rather than a re-scaffold; per-platform READMEs reference it.
- SilverApple is deprecated; SilverMetal Enhanced — iOS supersedes it.
  Migration step added as roadmap milestone 3I.1.
- SilverDROID name clash explicitly noted as unrelated (it's the SilverSHELL
  AppStore Android client, not an Android ROM).
- SilverChat may overlap with SilverVPN.Client.Chat; alignment decision
  added as roadmap milestone 1.1.1.

Roadmap restructured: phases now track the OS/Enhanced split.
Platform matrix re-sectioned and decision flowchart updated.
README rewritten around the two-product-line framing.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
SysAdmin
2026-04-25 03:30:45 +01:00
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android/README.md
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# SilverMetal Droid
# SilverMetal — Android
**Status**: Phase 2 (planning, post-Linux v1)
Android coverage across four tiers. See [`../docs/platform-matrix.md`](../docs/platform-matrix.md) for honest per-tier pros/cons.
Android coverage spans **both** SilverMetal product lines:
## Tiers
- 🔒 **SilverMetal OS** for devices where we ship a custom ROM (Pixel, Samsung-unlocked, Motorola-unlocked)
- 🛡️ **SilverMetal Enhanced** for users keeping their existing Android (any vendor, no bootloader unlock required)
### SilverMetal Droid Flagship — Pixel (Tier B)
GrapheneOS-fork on Pixel hardware. Verified boot we control, hardened kernel, app sandboxing enforced. Full SilverLABS Stack preinstalled.
See [`../docs/platform-matrix.md`](../docs/platform-matrix.md) for honest per-tier pros/cons.
### SilverMetal Droid Galaxy — Samsung (Tier C)
LineageOS / DivestOS-fork on Samsung models with unlockable bootloaders. Stack overlay on locked-bootloader models.
## Sub-flavours
### SilverMetal Droid Moto — Motorola (Tier C)
DivestOS / LineageOS-fork on supported Motorola models. Stack overlay everywhere.
### 🔒 SilverMetal OS — Pixel (Tier B)
GrapheneOS-fork on Pixel hardware. Verified boot we control, hardened kernel, app sandboxing enforced. Full SilverLABS Stack preinstalled. **Phase 2.1.**
### SilverMetal Droid Profile — generic (Tier D)
"Harden my existing Android" — full SilverLABS Stack + work-profile-based hardening config. Runs on any Android 13+ without bootloader changes.
### 🔒 SilverMetal OS — Samsung (Tier C)
LineageOS / DivestOS-fork on Samsung models with unlockable bootloaders. **Phase 2.2.**
### 🔒 SilverMetal OS — Motorola (Tier C)
DivestOS / LineageOS-fork on supported Motorola models. **Phase 2.3.**
### 🛡️ SilverMetal Enhanced — Android (Tier D)
For users keeping their existing OEM Android (Samsung locked-bootloader, OnePlus, Xiaomi, hand-me-downs, etc.). Stack apps + work-profile-based hardening config; no bootloader changes, no warranty void. **Phase 3A.**
## Directory layout
To be populated in Phase 2. Initial structure planned:
To be populated as each sub-flavour is built. Initial structure planned:
```
android/
├── flagship/ # Pixel / GrapheneOS-fork build config
├── galaxy/ # Samsung ROM build configs
├── moto/ # Motorola ROM build configs
├── profile/ # Generic profile installer + work-profile config
└── shared/ # Common build infra, signing, OTA
├── os-pixel/ # 🔒 GrapheneOS-fork build config (Phase 2.1)
├── os-samsung/ # 🔒 Samsung ROM build configs (Phase 2.2)
├── os-motorola/ # 🔒 Motorola ROM build configs (Phase 2.3)
├── enhanced/ # 🛡️ Generic profile installer + work-profile config (Phase 3A)
└── shared/ # Common build infra, signing, OTA
```
## Verification gates (per-tier)
## Verification gates
- ROM tiers: verified boot rooted in our key (Pixel only); reproducible builds; OTA signed and rollback-tested
- Profile tier: Stack apps installed and functional; work-profile isolation verified
- All tiers: telemetry-leak test (no Google services contact unless explicitly opted in by user)
- **OS tiers**: verified boot rooted in our key (Pixel only); reproducible builds; OTA signed and rollback-tested
- **Enhanced tier**: Stack apps installed and functional; work-profile isolation verified; no bootloader changes detected
- **All tiers**: telemetry-leak test (no Google services contact unless explicitly opted in by user); SilverVPN integrated as default VPN
## Upstream we depend on
- **GrapheneOS** — Pixel flagship base
- **LineageOS** — Samsung / Motorola base
- **GrapheneOS** — Pixel OS base
- **LineageOS** — Samsung / Motorola OS base
- **DivestOS** — additional hardening patches
- **AOSP** — root upstream
- **`SilverLABS/SilverVPN`** — MAUI Android client (existing)
## Note on naming
The existing repo `SilverLABS/SilverDROID` (SilverSHELL AppStore Android client) is unrelated to this Android flavour despite the similar name. They serve different products.