Link to Expanded image view and with dark mode

At least with query strings, ability to link to expanded view (large image view when clicked) and in dark mode for people who are not "logged in" (aka those who didn't have theme settings)

https://www.primfeed.com/ninakami.resident/posts/030ce4aa-c827-4576-b90a-bbc006d6b334?

currently shows this:

https://gyazo.com/4081041894cc57e03606ced038910984

Adding QueryStrings like fs=1 (fullscreen=1) to automatically show this view:

https://gyazo.com/a0312bda38d511c93c8a6042fb149a90