## Summary
- propagate an `isEncrypted` flag from thumbnail generation into
processed file metadata so uploads know when a password is still present
- add queueing logic inside `FileContext` that detects encrypted
uploads, prompts the user via a new modal, and automatically runs the
Remove Password endpoint to replace the file and preserve history
- introduce a dedicated `EncryptedPdfUnlockModal` component that mirrors
existing styling and messaging for unlocking PDFs
## Testing
- npm run typecheck:core
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[Codex
Task](https://chatgpt.com/codex/tasks/task_b_6919a0a418bc8328b886ec76a28170b7)
