Bumps @atproto/api to 0.20.9, which ships the generated
`AppBskyEmbedGallery` namespace and `DraftPost.embedGallery`. Swaps every
`#/lib/api/gallery-embed-shim` import to `@atproto/api`, deletes the
shim, drops the local `DraftPostWithGallery` widen-types, and adds the
narrowing calls (`isViewImage`, `isDraftEmbedImage`) the real lexicon
unions require.
The merge also auto-resolves an inline image-restore block in
`drafts/state/api.ts` against main's typing tweak — main switched to
`satisfies ComposerImage` and `NonNullable<typeof img>`, which here move
into the existing `restoreDraftImages` helper that's now shared by both
the images and gallery restore paths.
vineyardbovines
a222ec4de0