archy/docs/architecture.md

Archipelago — Architecture

Bitcoin Node OS — Flash to USB, install on hardware, manage via web UI.

Stack: Rust backend + Vue 3 + TypeScript (strict) + Vite + Tailwind CSS + Pinia + rootless Podman (Quadlet) Target OS: Debian 13 (Trixie) — x86_64 and ARM64 Status: 1.8.0-alpha — single-node production gate green; multinode pass + release hardening in progress (see ROADMAP.md)

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System Layers

┌──────────────────────────────────────────────────────┐
│                 YOUR BROWSER                         │
│          Vue 3 SPA (Composition API + Pinia)         │
└──────────────────────┬───────────────────────────────┘
                       │ HTTP / WebSocket
┌──────────────────────┴───────────────────────────────┐
│                    NGINX                             │
│   /rpc/v1 → backend    /app/{id}/ → container        │
└──────────────────────┬───────────────────────────────┘
                       │ port 5678 (127.0.0.1)
┌──────────────────────┴───────────────────────────────┐
│              RUST BACKEND (core/)                    │
│  Auth, ~380 RPC methods, orchestrator + reconciler,  │
│  federation, mesh, identity, wallet, updates         │
└──────────────────────┬───────────────────────────────┘
                       │ Podman REST API socket + systemd Quadlet units
┌──────────────────────┴───────────────────────────────┐
│           ROOTLESS PODMAN CONTAINERS                 │
│  50+ manifest-driven apps as user.slice Quadlet      │
│  units — survive backend restarts, self-heal         │
└──────────────────────────────────────────────────────┘

┌──────────────────────────────────────────────────────┐
│              DEBIAN 13 (Trixie)                      │
│  systemd, UFW, Tor, AppArmor, Reticulum daemon       │
└──────────────────────────────────────────────────────┘

Codebase Stats

Component	Lines	Files
Rust backend (core/)	~117,000	~334
TypeScript/Vue (neode-ui/src/)	~69,000	~325
Shell scripts (scripts/)	—	~51
Packaged apps (apps/*/manifest.yml)	—	51

Backend Crates (core/)

Workspace members (root core/Cargo.toml):

Crate	Purpose
archipelago	Main binary — API (~380 RPC methods), container orchestrator + boot reconciler, mesh, identity/federation, wallet, updates, marketplace
container (archipelago-container)	Podman REST client, canonical manifest schema, Quadlet compiler, health monitor, signed app catalog, image verification
security (archipelago-security)	AppArmor/seccomp container policy generation, secrets manager
openwrt (archipelago-openwrt)	TollGate gateway provisioning over SSH/UCI
performance (archipelago-performance)	Resource limits

Also on disk but not workspace members (standalone/legacy, cleanup tracked in the hardening plan §G): models, helpers, js-engine, container-init.

Key Backend Modules

core/archipelago/src/
├── api/handler/            — HTTP routing (/rpc, /health, /dwn, /ws)
├── api/rpc/dispatcher.rs   — RPC dispatch (~380 method arms)
├── api/rpc/package/        — App install/lifecycle/stacks (multi-container)
├── container/              — prod_orchestrator, boot_reconciler, quadlet,
│                             app_catalog (signed, embedded manifests),
│                             version_config, crash_recovery, secrets
├── trust/                  — release-root anchor (pinned Ed25519 pubkey),
│                             detached-signature verify, did:key
├── mesh/                   — Meshtastic + MeshCore + Reticulum transports,
│                             X3DH/double-ratchet crypto, outbox/scheduler,
│                             mesh AI assistant, bitcoin relay
├── federation/             — multi-node federation over Tor, state sync
├── identity.rs / identity_manager.rs — Ed25519 did:key, multi-identity
├── credentials/            — W3C Verifiable Credentials
├── nostr_discovery.rs      — Nostr presence (NIP-33 kind 30078)
├── nostr_handshake.rs      — NIP-44 encrypted peer comms
├── marketplace.rs          — decentralized app marketplace (Nostr NIP-78,
│                             DID-signed manifests, trust scoring)
├── wallet/                 — LND integration, ecash (Fedimint/Cashu)
├── update.rs               — signed OTA: resumable download, rollback,
│                             post-update self-verify window
├── session.rs / auth.rs    — sessions (persisted), Argon2id, TOTP
├── transport/ / network/   — Tor transport, DWN store/sync
└── fips/ / swarm/ / streaming/ — federation IPS anchor, P2P swarm (gated), streaming (WIP)

App Platform (as built)

An app is a directory apps/<id>/manifest.yml parsed by the canonical schema in core/container/src/manifest.rs. A manifest declares identity, a container source (image XOR build), and runtime shape: ports, volumes (confined to /var/lib/archipelago), generated config files, environment, devices, resources, health checks, and the launch interface. Ergonomics are declarative too: derived_env (host-fact templating), secret_env (podman secrets — values never appear in podman inspect or unit files), generated_secrets / generated_certs (self-healing), network_aliases, data_uid, and allow-listed post_install hooks that run inside the app's own sandbox.

Install compiles the manifest to a rootless Quadlet unit under user.slice — containers survive backend restarts and reboots. Multi-container apps (BTCPay, Mempool, Immich, NetBird, IndeeHub) are sets of per-member manifests installed via the stack orchestrator on an app-local network with readiness gates and generated cross-service secrets. A level-triggered boot reconciler converges actual state to desired state every 30 seconds.

Distribution: the signed catalog (releases/app-catalog.json, Ed25519 detached signature over canonical JSON, verified against the pinned release-root anchor in trust/anchor.rs) embeds the full manifest per app; nodes overlay catalog manifests over disk files (catalog wins), so apps can ship without OTA disk files. A curated subset (27 apps) powers the store UI (app-catalog/catalog.json). A parallel decentralized marketplace (Nostr NIP-78 discovery, DID-signed manifests, federation-weighted trust scoring, Lightning purchase invoices) is implemented as a second, community-distribution channel.

Security invariants enforced at manifest validation: read-only root and no-new-privileges by default, capability allow-list, network_policy ∈ {isolated, bridge, host}, bind mounts confined to /var/lib/archipelago, no privileged containers, rootless only.

Frontend (neode-ui/src/)

├── api/                    — RPC client, WebSocket, container client
├── views/                  — Dashboard, Apps, Marketplace, Cloud, Server,
│                             Mesh, Web5, Settings, Monitoring, Fleet, Chat,
│                             onboarding flow (11 screens), kiosk, recovery
├── components/             — EasyHome, ModeSwitcher, BootScreen, SpotlightSearch, …
├── stores/                 — Pinia: app, install, mesh, cloud, goals, uiMode,
│                             controller (gamepad), aiPermissions, …
├── composables/            — useControllerNav, useToast, useNavSounds, …
├── router/                 — ~51 routes
└── style.css               — global glassmorphism theme

Three UI modes (Pro/Easy/Chat), gamepad navigation, i18n, PWA. Tested with Vitest + Playwright. AIUI is a separate external app surfaced via nginx.

Mesh Networking

Three LoRa transports behind one chat UI and a common MeshRadioDevice surface:

• Meshtastic — in-process async serial driver (protobuf over SLIP)
• MeshCore — framed-serial protocol; phone companion apps speak this
• Reticulum (RNS/LXMF) — host-supervised Python daemon (reticulum-daemon/, PyInstaller-packaged, one per RNode radio) speaking Unix-socket JSON-RPC to the backend; archy-rnodeconf ships as an OS-level radio config tool

End-to-end encryption uses X3DH key agreement + double-ratchet. Extras: image and voice attachments, mesh AI assistant (!ai), Bitcoin balance relay over mesh, steganography, store-and-forward outbox.

Networking

• Container DNS: app-local Podman networks with network_aliases; aardvark-dns resolution
• Tor: system daemon, SOCKS5 on 9050, hidden services per node; all inter-node federation traffic
• Federation: invite-based joining, DID-based trust levels, state sync, cross-node app deploy
• UFW: DEFAULT_FORWARD_POLICY="ACCEPT" required for LAN container access
• OpenWrt/TollGate: gateway provisioning via the openwrt crate

Security Model

Layer	Measures
OS	Debian hardening, AppArmor, minimal packages
Nginx	CSP headers, rate limiting, auth_request, session validation
Backend	Input validation, CSRF, session auth, bind 127.0.0.1 only
Containers	Rootless Podman, cap-drop ALL + reviewed allow-list, readonly root, no-new-privileges, memory limits
Supply chain	Ed25519-signed release manifests + app catalog against a pinned release-root anchor; auto-apply refuses unsigned
Crypto	Ed25519 signatures, ChaCha20-Poly1305 encryption, Argon2id password hashing (transparent bcrypt upgrade), constant-time comparisons
Network	Tor hidden services, UFW firewall, SSRF prevention

Data Paths

Data	Path
App data	/var/lib/archipelago/{app-id}/
Identity	/var/lib/archipelago/identity/
Multi-identity	/var/lib/archipelago/identities/
Federation	/var/lib/archipelago/federation/
DWN messages	/var/lib/archipelago/dwn/messages/
Credentials	/var/lib/archipelago/credentials/
Backups	/var/lib/archipelago/backups/ (ChaCha20-Poly1305)
Secrets	/var/lib/archipelago/secrets/{app-id}/ (0600, service-user-owned)
Sessions	/var/lib/archipelago/sessions.json
Marketplace cache	/var/lib/archipelago/marketplace/
Frontend	/opt/archipelago/web-ui/
Backend binary	/usr/local/bin/archipelago

Key Features (Working)

• 50+ containerized apps with one-click install/manage; full lifecycle matrix repeatedly green on real hardware
• Bitcoin Core and Knots with per-app version pinning and safe switching; LND + Core Lightning
• Multi-node federation with invite-based joining and trust levels
• W3C DID identity (did:key, DID Documents, Verifiable Credentials)
• Nostr: NIP-33 node discovery, NIP-44/NIP-04 encryption, relay hosting
• Decentralized marketplace (NIP-78 discovery, trust scoring, Lightning purchases)
• File sharing with access controls (free/peers-only/paid via LN, on-chain, ecash)
• Encrypted backups (Argon2 + ChaCha20-Poly1305)
• Health monitoring + level-triggered reconciler with tiered auto-restart
• Tri-protocol LoRa mesh (Meshtastic / MeshCore / Reticulum) with E2E crypto
• Signed OTA updates with rollback and post-update self-verification
• Three-mode UI (Pro/Easy/Chat), gamepad navigation, real-time WebSocket updates
• Bootable ISO installer (image-recipe/), Android companion app

Further Documentation

Doc	Purpose
ROADMAP.md	Shipped / in-progress / planned
developer-guide.md	Dev setup, workflow, code conventions
api-reference.md	RPC endpoint reference
app-developer-guide.md	Building and publishing apps
app-manifest-spec.md	The manifest.yml schema
user-walkthrough.md	End-user installation and usage guide
troubleshooting.md	Diagnostic scenarios and solutions
operations-runbook.md	Ops commands and emergency recovery
multi-node-architecture.md	Federation protocol design
marketplace-protocol.md	Decentralized app discovery via Nostr
PRODUCTION-MASTER-PLAN.md	North star and workstream narrative
UNIFIED-TASK-TRACKER.md	Live, priority-ordered open items
archive/	Historical audits, session logs, shipped designs