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>

README.md

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+# Fast Inventory
+
+A quick-entry home inventory tool. Add items in seconds, track values, manage status, attach photos and receipts.
+
+## Quick Start
+
+```bash
+npm install
+npm run dev
+```
+
+Open http://localhost:5173
+
+## Usage
+
+**Add an item:** Type a name in the top bar and press Enter. That's it — 1 second.
+
+**Enriched entry:** Name → Tab → Category (autocomplete) → Tab → Location (autocomplete) → Enter. About 3 seconds.
+
+**Edit details:** Click any item row to open the detail modal. Add purchase price, date, notes, photos, receipts, or change status.
+
+**Statuses:** Active, Lent Out, Sold, Lost, Trashed. Defaults to Active.
+
+**Stats:** Click the Stats tab for value breakdowns, item counts, and inflow/outflow charts.
+
+## Production
+
+```bash
+npm run build
+npm start
+```
+
+Runs on http://localhost:3001 (single server, no separate frontend process).
+
+Set a custom port with `PORT=8080 npm start`.
+
+## Tech Stack
+
+- **Backend:** Express + TypeScript + SQLite (better-sqlite3)
+- **Frontend:** React + Vite + Tailwind CSS + Recharts
+- **Storage:** SQLite database at `server/data/inventory.db`, uploads at `server/uploads/`
+
+## Data
+
+All data is local. The SQLite database and uploaded files live in the `server/` directory:
+
+- `server/data/inventory.db` — database
+- `server/uploads/` — photos and receipts
+
+Back up these two paths to preserve your inventory.
+
+## Scripts
+
+| Command | Description |
+|---|---|
+| `npm run dev` | Start dev servers (frontend + backend) |
+| `npm run build` | Build for production |
+| `npm start` | Run production server |
+| `npm run typecheck` | Type-check both packages |