New concept page backup-recovery.md resolving the design half of open-question #5.
Driving scenario: a stolen/destroyed PC whose LUKS+TPM disk is unrecoverable by
design — recovery stands up a NEW PC, restores a backup, and keeps signing the
SAME chain.
Settled: admin-driven encrypted full-DB backup (SQLite online-backup/VACUUM INTO,
snapshots included) to local/USB, SMB/NFS, or SFTP targets; manual button + an
in-process daily timer; keep-last-N + dailies retention; restore is admin-only /
out-of-band (operator-adversary surface). A restored copy must still verifyChain.
Key custody (the load-bearing decision, bears on #6): three independent keys —
EVENT_SIGNING_KEY kept an extractable, escrowed software key DECOUPLED from the
TPM so the ledger survives total hardware loss (the conscious trade: a TPM-sealed
signing key would be unforgeable but permanently unverifiable after the machine
dies); a NEW dedicated park_buzi_backup_key in Komodo for backup encryption,
separate from the signing key; the LUKS/TPM disk key, appliance-only and
deliberately non-recoverable. Keys are never inside the backup they unlock.
Updated open-questions #5 (design SETTLED) + #10 note; disk-os-hardening deploy
runbook (why the signing key is not sealed + park_buzi_backup_key); index catalog
+ concept count. Design only — not yet built.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
New wiki/decisions/appliance-provisioning.md: the hardware-verified step-by-step for
provisioning a booth PC (Dell OptiPlex 7070, i5-8500, discrete Nuvoton TPM 2.0) from
factory Windows to a hardened Ubuntu 26.04 LTS appliance. Every command was run on the
first real unit (2026-06-23). Captures the firmware-specific gotchas: Ventoy → 0x1A under
Secure Boot (flash ISO directly); the 7070 BIOS can't view db (verify via live USB); the
installer's hardware-backed encryption fails with PCR_UNUSABLE/dbt (use passphrase LUKS +
manual systemd-cryptenroll PCR-7 seal); GRUB password must be edit-only (--unrestricted)
to keep unattended boot.
OS hardening on unit 1 is COMPLETE + verified: LUKS FDE + TPM auto-unlock (PCR 7,
unattended) + Secure Boot (Deployed) + GRUB edit-lock (closes the init=/bin/bash root-shell
hole that PCR-7 sealing does not cover). Resolves the implementation half of
open-questions #12 for unit 1.
Cross-linked from disk-os-hardening; index + log updated. Still TODO on the box: Docker +
run the stack.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
Documents the deploy-time requirement that the cookie fail-safe fix (7629d5d)
introduced: the LAN appliance serves the SPA same-origin over plain http, where a
Secure cookie is never sent — so it MUST set COOKIE_SECURE=0 or operators can't log
in. A TLS deploy leaves it unset.
- wiki/concepts/disk-os-hardening.md: new "Deploy-time server configuration (runbook)"
section listing the security-load-bearing env (JWT_SECRET, EVENT_SIGNING_KEY,
COOKIE_SECURE=0) with the why + the network-scoped justification.
- wiki/entities/local-jwt-auth.md: corrected the stale "Secure when NODE_ENV=production"
cookie line to the Secure-by-default / opt-out model.
- wiki/log.md: entry.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
Add apps/desktop, a thin Tauri v2 shell wrapping the SAME @parking/web SPA so
the desktop and browser UIs never drift: dev loads the Vite dev server (HMR),
prod bundles the web app's dist/. No business logic in the shell (device/auth/
ledger stay in @parking/server); deny-by-default capabilities.
apps/web (single UI source of truth):
- lib/origin.ts: centralize the backend origin (API_BASE/apiUrl/wsUrl from
VITE_API_BASE); no-op in the browser, lets the desktop build target Fastify.
- lib/kiosk.ts: block the right-click context menu in PROD only (dev keeps it +
devtools).
- lib/desktop-updater.ts: prompt-on-update auto-update (no-op in browser/offline)
→ downloadAndInstall + relaunch; i18n update.* keys (sq+en).
- .env.production: VITE_API_BASE wired to the Fastify origin for the bundle.
Desktop:
- window starts maximized (not fullscreen — operator keeps OS access).
- auto-update via tauri-plugin-updater + -process; self-hosted endpoint is a
PLACEHOLDER to fill in. Updater keypair: pubkey embedded in tauri.conf.json;
private key + password kept OUTSIDE the repo (~/.parking-updater-keys) and as
TAURI_SIGNING_* build secrets.
- Turbo build is a no-op; the real signed bundle is `pnpm --filter
@parking/desktop bundle` (verified → .deb/.rpm/.AppImage + .sig signatures).
Verified: cargo check clean; turbo run build lint 14/14 green; i18n parity holds;
no key/sig/bundle artifacts in the repo.
Wiki (security + desktop analysis recorded alongside):
- new concepts/tpm.md (TPM 2.0: how it works, sealed-LUKS auto-unlock + non-
extractable signing key, limits — live-root, bus-sniff — TPM-vs-ATECC608 by
platform).
- new decisions/desktop-shell-tauri.md (Tauri v2 over Electron; best-case Ubuntu
26.04 LTS, worst-case Windows+WSL → kiosk browser; full as-built).
- pull-the-disk attack trace on append-only-event-chain; ATECC608 not-in-a-PC
caveat; cross-links from disk-os-hardening / threat-model.
- open-questions #11 (appliance WebKitGTK), #12 (TPM hardening impl), #13
(startup verifyChain self-check); index/overview/log/standing-decisions.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
Turborepo (pnpm workspaces) with all dependencies pinned to latest
mutually-compatible versions: turbo 2.9, TypeScript 6, Fastify 5,
React 19, Vite 8, better-sqlite3 12 + Drizzle ORM 0.45.
Layout:
- apps/server Fastify backend (local JWT auth + role guard, /health)
- apps/web React 19 + Vite 8 operator SPA
- packages/db Drizzle schema on SQLite/WAL; append-only events + users
- packages/devices reader/printer/relay adapter interfaces (intent-only relay)
- packages/shared shared domain types
Architecture constraints from the design wiki are encoded in the scaffold:
append-only hash-chained + signed event log, device-agnostic adapters,
"a barrier is not a door" (relay expresses intent only), fully-local
offline-first auth.
wiki/ is an LLM-maintained Obsidian knowledge base (28 pages) ingested
from the architecture & design notes, with its own maintenance schema.
Verified: pnpm install, full turbo build (5/5), server boots and serves
/health, drizzle-kit generates the initial migration.
julian