feat: send screen recordings (#128)

* first pass implementation

* remove screenrecord shortcut hint

* refactor

* fix: prevent mirror review of screen recording

* feat: allow recording with webcam overlay

* fix: review screen recording without clipped content

* tidy keyboard hints consistent position

* refactor: re-use one component for screen picker

huddles and screen clips use same picker component now. We had to make
sure that tailwind works for both of them.

* fix: improve visibility of keyboard hints

During compose video or screen recording, the keyboard hints were
invisible if the content was super bright.

js/src/styles/globals.css

@@ -2,6 +2,12 @@
 @import "tw-animate-css";
 @import "shadcn/tailwind.css";
 
+/* Ensure Tailwind scans shared components/features used by secondary windows
+   (huddle, screen_record, autoplay) whose vite root is a subdirectory. */
+@source "../components";
+@source "../features";
+@source "../lib";
+
 @custom-variant dark (&:is(.dark *));
 
 @theme inline {