Remove pdf417 npm dependency

Removing the external pdf417 package in favor of custom implementation.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

package.json

@@ -30,7 +30,6 @@
     "next": "^14.0.2",
     "next-auth": "^5.0.0-beta.4",
     "next-intl": "^3.7.0",
-    "pdf417": "^0.1.5",
     "pdfjs-dist": "^4.0.379",
     "pg": "^8.11.3",
     "postcss": "8.4.31",