julian
bfe64032d8
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.
30 lines
1.1 KiB
Markdown
30 lines
1.1 KiB
Markdown
---
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type: concept
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tags: [parking, security, anti-fraud, offline-first]
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sources: [parking-system-architecture]
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updated: 2026-06-14
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---
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# Reconciliation
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**The real anti-fraud control.** Comparing local records against **an authority the operator
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cannot alter**. This is what remote sync *really is* — a fraud-control mechanism, not just a
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backup. (See [[parking-system-architecture]] §3.)
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## Reconciliation when offline
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[[offline-first]] does not mean no reconciliation — it means **deferred, intermittent**: a
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manager visiting weekly with a USB stick, a phone hotspot once a day, a monthly export. Any of
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these provides a path to compare local records against something outside the operator's reach.
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## If it truly is "never, by anyone"
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Only design for that if it's genuinely true. The network-free fallback controls are:
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- the signed, hash-chained log ([[append-only-event-chain]]),
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- physically **pre-numbered ticket stock**,
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- **end-of-shift signed Z-reports**,
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- **CCTV/LPR footage** as an independent record (see [[lpr-camera]]).
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Establishing *some* periodic reconciliation channel is [[open-questions]] #4.
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