julian
8a8e74561d
Pivot from the hardware/integrity layer to the parking operation. All wiki-only; no code yet. Core principle throughout: business entities are projections over the signed append-only event log, never mutable tables. New concepts: parking-session, tariff (composable/versioned, FX-ready), shift (manned-only Z-report), capacity-occupancy, validation-discounts, reporting-analytics, clock-integrity, ticket-encoding, anti-passback. New entities: permit, opencv-anpr-service, blocklist. Decisions: session-model, vision-service (host-side ANPR + vehicle verification; scoped AGPL exception for the isolated service). Updates: append-only-event-chain (new event types + vision witness), local-jwt-auth (drop 8h expiry -> until logout; code change pending), lpr-camera (host-side recognition supersedes edge-AI), standing-decisions (AGPL exception), open-questions (+FX, +pay-station money corners, backup). Deferred + flagged: intercom/help-call, receipts/refunds/change, FX engine, lane topology (#1).
37 lines
1.9 KiB
Markdown
37 lines
1.9 KiB
Markdown
---
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type: decision
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tags: [parking, decisions]
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sources: [parking-system-architecture]
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updated: 2026-06-14
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status: settled
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---
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# Standing Decisions (settled)
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The decisions treated as settled in the design notes. (See [[parking-system-architecture]]
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"Summary of standing decisions".)
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- **Stack:** [[turborepo]] · [[fastify]] (Node) · [[react-vite-spa]] · [[sqlite]] +
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[[drizzle-orm]] · [[local-jwt-auth]]. All MIT/Apache/BSD — **no vendor lock, no rug-pull
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risk** (see [[payload-cms]]). Full table in [[technology-stack]].
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- **Scoped exception (2026-06-15):** the [[opencv-anpr-service]] — a **separate local process**,
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not linked into the app — **may use AGPL** components (plate/vehicle models). The exception is
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bounded to that process; the Node/React app stays strictly MIT/Apache/BSD. See
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[[vision-service]].
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- **Platform:** a **dedicated, hardened Linux appliance** (LUKS + GRUB password + Secure Boot),
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**not Windows/WSL** — see [[disk-os-hardening]].
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- **Integrity:** append-only, hash-chained, [[atecc608]]-signed event log
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([[append-only-event-chain]]); **[[reconciliation]] is the anti-fraud control**; encryption
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protects only at-rest (see [[threat-model]]).
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- **Access control:** the **[[dingtian-relay]]** relay+input controller, on an **isolated VLAN**
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([[network-isolation]]). Chosen because its **inputs are decoupled from its relays**, enabling
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host-in-the-loop ticket-first entry — the resolution to [[access-controller-button-flow]].
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(The [[uhppote-controller]] and [[zkteco-controller]] were evaluated and **rejected** — kept as
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historical record. The [[esp32-custom-controller]] remains the documented prevention-grade
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alternative — the [[trust-boundary]] fork.)
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- **Readers:** prefer [[wiegand]]-into-controller for permit holders (autonomous); host-in-the-loop
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for [[lpr-camera|LPR]]/QR/pure-network readers; both can share a relay (see
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[[entry-exit-readers]]).
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Unsettled items live in [[open-questions]].
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