feat(editor): add cursor sway, HUD capture controls, and persistent prefs

[kbdevs]

Summary

• add an eye toggle to the recording HUD so the control window can stay visible on screen without appearing in captures
• resize and constrain the HUD overlay so the extra control fits cleanly without clipping
• fix cursor sway so it leans with cursor movement and remap the slider so 1x matches the previous 2x strength
• remember the editor's last background, effects, cursor, crop, export, custom aspect ratio, and uploaded wallpaper settings between editing sessions

Verification

• bunx vitest run src/components/video-editor/editorPreferences.test.ts src/components/video-editor/videoPlayback/cursorSway.test.ts
• bunx tsc -p tsconfig.json --noEmit --pretty false
• bun run i18n:check

[webadderall]

Could you attach a video showing the effect in action?

[kbdevs]

This is with maximum sway, I've also added hiding the toolbar from the video.
https://streamable.com/9s9hhf

[webadderall]

I really like this feature, this is good stuff!
Some things I would like to seen fixed:

• HUD hidden doesn't work on Linux and silently fails (setContentProtection is a no-op on Linux, HUD will show in captures). Either don't show the HUD eye toggle button on Linux or find a way to hide it (difficult)
• hudOverlayHiddenFromCapture user setting isn't persisted, so users have to re-toggle every time
• HUD overlay icon button should also be toggled to hide HUD by default, also update the selection colour to apply to the visible eye icon.
• src/vite-env.d.ts is reformatted (quote style + indentation) with no functional changes, please revert to keep the diff focused.

[webadderall]

Also, could you keep the editor saved prefs edits in a separate PR please?

[kbdevs]

I addressed the linux issues, hard to split up to two PR's now.

Changes included:

• hide the HUD capture toggle on Linux so we do not present a setting that silently does nothing there
• persist hudOverlayHiddenFromCapture and default it to hidden from capture on launch
• update the HUD eye icon state so the visible-eye state gets the selected styling

[webadderall]

Fix merge conflicts and then should be good for merge!

[kbdevs]

@webadderall Fixed the merge conflicts and pushed the update to feat/cursor-sway in 6e7a034. I also ran bun run test and bun run i18n:check successfully. bun run build still stops on the existing unused normalizeLocale error in src/contexts/I18nContext.tsx, but the merged conflict files type-check clean otherwise.