Discord Message Auto-Sender Extension

I need a lightweight Chrome extension that will run smoothly on my Acer Chromebook and automate three actions inside Discord’s web client: selecting a message from a predefined list, pasting it into an open chat channel, and sending it on a loop.

Core workflow
• The extension loads a list of preset lines I maintain (hard-coded JSON, simple TXT, or an in-extension editor—whichever is easier to implement).
• At a user-set interval it grabs the next line, focuses the message box, pastes, and triggers the normal Enter/Send event.
• Once it reaches the end of the list it should cycle back or optionally shuffle to look less repetitive.

Essential features
• Runs entirely in-browser; no external executables or drivers.
• Simple pop-up UI to start/stop, pick the target tab if several Discord servers are open, adjust delay, and edit the message list.
• Visual cue (icon badge or small overlay) showing when the sender is active.
• Basic safety: minimum delay threshold to avoid Discord’s rate limits, automatic pause if a CAPTCHA or send error appears.

Deliverables
1. Unpacked extension source folder ready for “Load unpacked” in Chrome.
2. Brief README or screen-capture guide showing installation, configuration, and how to update the message list.
3. Commented code so I can tweak intervals or add more messages later.

Acceptance criteria
• Tested on the latest Chrome OS build; starts, stops, and cycles through at least five messages without manual input.
• No background crashes or Discord client errors after 30 minutes of continuous sending.

If something in the flow can be streamlined further, let me know—simplicity and reliability are the priorities.