Tests: fix package boundary and runtime drift

src/plugin-sdk/text-runtime.ts

@@ -27,6 +27,12 @@ export * from "../utils/chunk-items.js";
 export * from "../utils/fetch-timeout.js";
 export * from "../utils/reaction-level.js";
 export * from "../utils/with-timeout.js";
+export {
+  hasNonEmptyString,
+  normalizeNullableString,
+  normalizeOptionalString,
+  readStringValue,
+} from "../shared/string-coerce.js";
 export {
   CONFIG_DIR,
   clamp,