fix(publish): simplify publish script to prevent CI hangs

Remove redundant check/build logic from publish script. The ci:validate
script already runs tests, checks, and builds before publish:ci runs.
The publish script now only validates artifacts exist and publishes.

This fixes potential CI hangs caused by running tests with piped stdio.

Author: jdalton

package.json

@@ -47,7 +47,7 @@
     "prepare": "husky",
     "prepublishOnly": "echo 'ERROR: Use GitHub Actions workflow for publishing' && exit 1",
     "publish": "node scripts/publish.mjs",
-    "publish:ci": "node scripts/publish.mjs --skip-git --skip-build --tag ${DIST_TAG:-latest}",
+    "publish:ci": "node scripts/publish.mjs --tag ${DIST_TAG:-latest}",
     "claude": "node scripts/claude.mjs",
     "test": "node scripts/test.mjs",
     "type": "tsgo --noEmit -p .config/tsconfig.check.json",