Production deployment setup + feature complete

- Dockerfile + deploy.sh for Hetzner server
- Email verification via Better Auth + Resend
- Invite code flow (6-digit OTP, generate/join)
- Settlement share percent fix (payer vs debtor)
- OCR scanner fixes (date display, retry, viewfinder)
- app.json icon/splash/adaptive-icon configured
- iOS deployment target 15.5 (ML Kit requirement)
- DB migration 0014: household_invitations table

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

packages/shared/package.json

@@ -0,0 +1,24 @@
+{
+  "name": "@haushaltsApp/shared",
+  "version": "0.0.0",
+  "private": true,
+  "type": "module",
+  "exports": {
+    "./schemas/transaction": {
+      "default": "./src/schemas/transaction.schema.ts"
+    },
+    "./schemas/trips": {
+      "default": "./src/schemas/trips.schema.ts"
+    },
+    "./schemas/*": "./src/schemas/*.ts",
+    "./types": "./src/types/index.ts",
+    "./constants/*": "./src/constants/*.ts"
+  },
+  "dependencies": {
+    "zod": "catalog:"
+  },
+  "devDependencies": {
+    "@haushaltsApp/config": "workspace:*",
+    "typescript": "^5"
+  }
+}