Browser extension to bridge between the desktop app and web pages

[1j01]

I want to make a browser extension, which would:

1. Enhance system-level dwell clicking with knowledge of buttons, links, and other controls on web pages, with hover halos and centered dwell click indicators.
2. Make it so you don't need to disable dwell clicking in the desktop app to use a web app that provides dwell clicking (for web applications that include the tracky-mouse.js library, or else support some protocol yet to be defined).
3. Provide the equivalent of the desktop application for Chrome OS.
4. Automatically enhance webpages to be friendlier toward facial mouse input, by preventing menus from closing based on hover, enlarging elements etc., probably using site-specific enhancements.

[1j01]

thinking about detecting controls, briefly:

• can I make it work for just the tracky mouse UI main window quickly?
  • nah, probably should wait and address the harder problem of communicating with webpages first
• when communicating with webpages, how will it translate page coordinates to screen coordinates?
  • well theoretically javascript has window.screenLeft etc. but I'm not sure these would be accurate in all cases
  • could render fiduciaries to the page (at viewport corners) and have the desktop app read the pixels of the screen to establish a frame of reference, with unique fiduciaries for each page, or unique per "alignment request"
  • there's also page scaling (browser zoom level) and screen DPI to consider

[1j01]

oh, actually, I think my plan was to avoid translating page coordinates into screen coordinates by having the browser extension render the halos on the page, rather than the desktop app rendering the halos in the screen overlay window.
that's like 100x simpler, right? don't need to worry about screen DPI or page scaling (pretty much), let alone rendering fiduciaries and accessing screen pixels
I feel like I almost super overcomplicated this future for my future self by writing that half-baked note