Initial commit - Stashpile v0.1

Smart household management frontend for Grocy servers.

Features:
- Dashboard with PulseRing status indicator
- Shopping list with checkable items
- Expiring soon / low stock alerts
- Chores summary
- Quick add with create product flow
- PWA installable

Tech: React 19, TypeScript, Vite, TanStack Router, Zustand, Tailwind CSS

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

tsconfig.json

@@ -0,0 +1,7 @@
+{
+  "files": [],
+  "references": [
+    { "path": "./tsconfig.app.json" },
+    { "path": "./tsconfig.node.json" }
+  ]
+}