*   Added a new "Start Emulation" button to the UI to toggle between card scanning and tag emulation modes.
*   Implemented `startCardEmulation` and `stopCardEmulation` logic using `RFCardReader`.
*   Added a `urlToNdefPayload` utility to dynamically compile standard URL strings into NFC Forum-compliant NDEF URI records with smart prefix compression.
*   Updated the README with API references, emulation feature details, and a code highlight for the NDEF compiler.