fix(plugin-sdk): add web-search contract subpath

src/plugin-sdk/provider-web-search-contract.ts

@@ -0,0 +1,12 @@
+// Narrow shared exports for web-search contract surfaces.
+
+import type { WebSearchProviderPlugin } from "../plugins/types.js";
+
+export {
+  getScopedCredentialValue,
+  resolveProviderWebSearchPluginConfig,
+  setScopedCredentialValue,
+  setProviderWebSearchPluginConfigValue,
+} from "../agents/tools/web-search-provider-config.js";
+export { enablePluginInConfig } from "../plugins/enable.js";
+export type { WebSearchProviderPlugin };