icon rendering/fetching

[Marbowls]

icon.rs finds the icon path and theme, strips absolute path from dekstop file.
graphics.rs does the ratattui-image protocol stuffstuff
run.rs find unchached icons spawn a bg process and sends it to the state machine
app_ui.rs renders based on need draw instead of fps

ps
(you migt want to add redb icon maping in the future so that it doesnt have to search for the icons everytime and it could also remeber theme name so the theme can switch seamlessly and also adding config options but not my job.)

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Summary by cubic

Add theme‑aware icon lookup and on‑demand rendering to the app launcher. Icons now show next to app names with async loading, caching, and fewer redraws.

• New Features

  • Theme-aware icon lookup and caching via linicon-theme + freedesktop-icons (absolute paths supported; hicolor fallback).
  • Icon rendering in the list with ratatui-image; PNG and SVG supported (SVG rasterized via usvg/resvg/tiny-skia).
  • Async loading for visible icons only; UI adds a small icon gutter and selection marker; desktop actions inherit the parent icon.
  • Picker auto-detection with a safe halfblocks fallback when graphics aren’t supported.

• Performance

  • Redraw only when needed; limit work to visible items.
  • LRU cache (2000 icons) with de-duplicated loads; icon path lookups cached.
  • Background tasks load icons off the UI thread and stream them into the cache.

^{Written for commit 0de2edd. Summary will update on new commits.}

[Marbowls]

should add https://www.arewesixelyet.com/ so people can check what is sixel supported or not