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/db/package.json

@@ -5,6 +5,9 @@
     ".": {
       "default": "./src/index.ts"
     },
+    "./schema": {
+      "default": "./src/schema/index.ts"
+    },
     "./*": {
       "default": "./src/*.ts"
     }