irodr + https://github.com/azu/post-tweet

irodr:post-tweet.user.js

// ==UserScript==
// @name irodr:post-tweet
// @namespace   info.efcl
// @include     https://irodr.netlify.com/
// @include     http://localhost:13245/
// @version     1
// @grant       none
// @run-at      document-end
// ==/UserScript==
window.addEventListener("keydown", (event) => {
  if(event.shiftKey && event.metaKey && event.key == "Enter") { 
    const item = window.userScript.getActiveContent();
    const subscription = window.userScript.getActiveSubscription();
    if(!item || !subscription){
      return;
    }
    event.preventDefault(); 
    const selectedText = window.getSelection().toString();
    const title = subscription.title ? `${item.title} - ${subscription.title}` : item.title; 
    location.href = `post-tweet://?url=${encodeURIComponent(item.url)}&title=${encodeURIComponent(title)}&quote=${encodeURIComponent(selectedText)}`
  }
});