Add two Nebula extension packages: - hello-nebula: a minimal demo extension that shows a small badge on pages (manifest, content.js, content.css, README). - return-youtube-dislike: a content-script port that shows estimated YouTube dislike counts using the public Return YouTube Dislike API (manifest, content.js, content.css, README). Includes GPL-3.0 LICENSE and required attribution. READMEs contain install instructions and notes.
Copy this folder into Nebula's extensions directory to install: %LOCALAPPDATA%\Nebula\User Data\extensions\hello-nebula\ Then open Settings > Plugins and click Reload Plugins (or restart Nebula). manifest.json fields: id, name, version, description, enabled content_scripts[].matches (e.g. "*://*/*", "*://*.youtube.com/*", "<all_urls>") content_scripts[].js / css (paths relative to this folder)