reliability, batch transfer, and privacy (#60)

* chore(deps): add qrcode, archiver, selfsigned; require Node >=14.17

* feat(network): smart interface detection + --interface

* feat(qr): browser QR fallback page and --open

* feat(receive): multi-file and drag-and-drop uploads

* feat(zip): download a shared folder as a single .zip

* feat(clipboard): browser copy page for shared clipboard text

* feat(text): send a text snippet from the phone to the terminal

* feat(https): auto-generate a self-signed certificate for -S

* feat(ephemeral): --once and --timeout

* feat(secure): capability-token share links and --secure preset

* feat(network): startup hint for same-Wi-Fi / firewall connectivity

* docs: rewrite README around the new capabilities; add ROADMAP

* Bump version from 1.3.2 to 1.4.0

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Co-authored-by: Amin Rostami <amin@amins-MacBook-Air.local>

fix: issue with view and downloading files in the directory

Bump version from 1.3.0 to 1.3.1

Add Node.js version 24 to CI workflow

fix/receive-with-specified-port

fix random receive port and better messages

change package name to easy-sharing for publishing