Several minor improvements to typing and misc.

- Improved schema validation
- Move username parsing and other validators to schema types
- Fix astro check command
- Add JSON/YAML schema validation for data collections
- Update licenses
- Remove deployment script in favor of rsync
- Prevent unsanitized input in export-story script
- Change "eng" language to "en", per BCP47
- Clean up i18n keys and add aria attributes
- Improve MastodonComments behavior on no-JS browsers

src/pages/games/[...slug].astro

@@ -18,17 +18,6 @@ export const getStaticPaths: GetStaticPaths = async () => {
 };
 
 const game = Astro.props;
-if (!game.data.isDraft) {
-  if (!game.data.pubDate) {
-    throw new Error(`Missing "pubDate" for published game ${game.data.title} ("${game.slug}")`);
-  }
-  if (!game.data.thumbnail) {
-    throw new Error(`Missing "thumbnail" for published game ${game.data.title} ("${game.slug}")`);
-  }
-  if (game.data.tags.length == 0) {
-    throw new Error(`Missing "tags" for published game ${game.data.title} ("${game.slug}")`);
-  }
-}
 const { Content } = await game.render();
 ---