Migrate to @bsky.app/alf package (#9030)

* Add storybook shortcut in dev

* Migrate to alg pkg

* Migrate font_bold to new font_semi_bold

* Migrate font_heavy to font_bold

* Fix old theme refs

* Remove leading util

* Bump

* Revert "Add storybook shortcut in dev"

This reverts commit 7a86195c77fb5d449c7782e64ebabb6addfab919.

* Remove alf script

* Adjust font scale

* Bump

* Bump pkg

* Migrate values from conflicts

* Create default themes outside react

* Use built-in alf utils

* Migrate old font styles

* Remove unused tokens

* Move theme creation to more appropriate file

* Update button colors

* Adjust TextField colors, line heights

src/alf/fonts.ts

@@ -7,11 +7,11 @@ const WEB_FONT_FAMILIES = `system-ui, -apple-system, BlinkMacSystemFont, "Segoe
 
 const factor = 0.0625 // 1 - (15/16)
 const fontScaleMultipliers: Record<Device['fontScale'], number> = {
-  '-2': 1 - factor * 3,
-  '-1': 1 - factor * 2,
-  '0': 1 - factor * 1, // default
-  '1': 1,
-  '2': 1 + factor * 1,
+  '-2': 1 - factor * 1, // unused
+  '-1': 1 - factor * 1,
+  '0': 1, // default
+  '1': 1 + factor * 1,
+  '2': 1 + factor * 1, // unused
 }
 
 export function computeFontScaleMultiplier(scale: Device['fontScale']) {