gitroomhq/postiz-app ? reverse-engineered prompt

Build me a self-hosted social media management tool, like an open-source version of Buffer or Hypefury. I want to connect all my social accounts in one dashboard—X, Instagram, Facebook, LinkedIn, TikTok, and even newer ones like Bluesky and Mastodon.

The core feature should be a post scheduler. I want to write content, and then queue it to be published across different channels at specific times. A visual calendar would be great for seeing my content plan. Let's add some AI help, too; maybe it can suggest post ideas, help rephrase things, or recommend the best times to post.

I also need a simple analytics page to track basic metrics like likes and shares. It would be a plus if I could invite team members to collaborate on drafts. Let's build this as a modern web app using Next.js and make sure the whole thing is easy to deploy with Docker.