Initial commit: Fast Inventory app

Monorepo with Express + SQLite backend and Vite + React frontend.
Features: item CRUD, file uploads with thumbnails, soft delete,
item duplication with file copying, autocomplete inputs, stats dashboard.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package.json

@@ -0,0 +1,15 @@
+{
+  "name": "fast-inventory",
+  "private": true,
+  "workspaces": ["server", "client"],
+  "scripts": {
+    "dev": "concurrently -n server,client -c blue,green \"npm run dev -w server\" \"npm run dev -w client\"",
+    "build": "npm run build -w client && npm run build -w server",
+    "start": "npm run start -w server",
+    "typecheck": "npm run typecheck -w server && npm run typecheck -w client"
+  },
+  "devDependencies": {
+    "concurrently": "^9.1.0",
+    "typescript": "^5.7.0"
+  }
+}