Initial scaffold: Turborepo monorepo + design wiki

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.

wiki/decisions/standing-decisions.md

@@ -0,0 +1,30 @@
+---
+type: decision
+tags: [parking, decisions]
+sources: [parking-system-architecture]
+updated: 2026-06-14
+status: settled
+---
+
+# Standing Decisions (settled)
+
+The decisions treated as settled in the design notes. (See [[parking-system-architecture]]
+"Summary of standing decisions".)
+
+- **Stack:** [[turborepo]] · [[fastify]] (Node) · [[react-vite-spa]] · [[sqlite]] +
+  [[drizzle-orm]] · [[local-jwt-auth]]. All MIT/Apache/BSD — **no vendor lock, no rug-pull
+  risk** (see [[payload-cms]]). Full table in [[technology-stack]].
+- **Platform:** a **dedicated, hardened Linux appliance** (LUKS + GRUB password + Secure Boot),
+  **not Windows/WSL** — see [[disk-os-hardening]].
+- **Integrity:** append-only, hash-chained, [[atecc608]]-signed event log
+  ([[append-only-event-chain]]); **[[reconciliation]] is the anti-fraud control**; encryption
+  protects only at-rest (see [[threat-model]]).
+- **Access control:** [[uhppote-controller]] for now, on an **isolated VLAN**
+  ([[network-isolation]]); event log used as a tamper-evident audit source with host-side index
+  tracking ([[event-log-ingestion]]). The [[esp32-custom-controller]] is the documented
+  prevention-grade upgrade path (the [[trust-boundary]] fork).
+- **Readers:** prefer [[wiegand]]-into-controller for permit holders (autonomous); host-in-the-loop
+  for [[lpr-camera|LPR]]/QR/pure-network readers; both can share a relay (see
+  [[entry-exit-readers]]).
+
+Unsettled items live in [[open-questions]].