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.

package.json

@@ -0,0 +1,28 @@
+{
+  "name": "parking-system",
+  "version": "0.0.0",
+  "private": true,
+  "packageManager": "pnpm@10.24.0",
+  "engines": {
+    "node": ">=22.12"
+  },
+  "scripts": {
+    "build": "turbo run build",
+    "dev": "turbo run dev",
+    "lint": "turbo run lint",
+    "typecheck": "turbo run typecheck",
+    "test": "turbo run test"
+  },
+  "devDependencies": {
+    "turbo": "2.9.18",
+    "typescript": "6.0.3",
+    "@types/node": "25.9.3"
+  },
+  "pnpm": {
+    "onlyBuiltDependencies": [
+      "bcrypt",
+      "better-sqlite3",
+      "esbuild"
+    ]
+  }
+}