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/typography.tsx

@@ -8,21 +8,6 @@ import {isNative} from '#/platform/detection'
 import {isIOS} from '#/platform/detection'
 import {type Alf, applyFonts, atoms, flatten} from '#/alf'
 
-/**
- * Util to calculate lineHeight from a text size atom and a leading atom
- *
- * Example:
- *   `leading(atoms.text_md, atoms.leading_normal)` // => 24
- */
-export function leading<
-  Size extends {fontSize?: number},
-  Leading extends {lineHeight?: number},
->(textSize: Size, leading: Leading) {
-  const size = textSize?.fontSize || atoms.text_md.fontSize
-  const lineHeight = leading?.lineHeight || atoms.leading_normal.lineHeight
-  return Math.round(size * lineHeight)
-}
-
 /**
  * Ensures that `lineHeight` defaults to a relative value of `1`, or applies
  * other relative leading atoms.