Add docs build to core validation

Author: gricha

package.json

@@ -22,7 +22,8 @@
     "format:check": "oxfmt --check src/ test/",
     "check": "bun run lint && bun run format:check && bun x tsc --noEmit",
     "lint:web": "cd web && bun run lint",
-    "validate:core": "bun run lint && bun run format:check && bun run build:ts && bun run build:worker && bun run test:unit",
+    "docs:build": "cd docs && bun run build",
+    "validate:core": "bun run lint && bun run format:check && bun run build:ts && bun run build:worker && bun run docs:build && bun run test:unit",
     "validate:web": "bun run build:web && bun run lint:web && bun run test:web",
     "validate:full": "bun run validate:core && bun run validate:web",
     "validate": "bun run validate:core",