feat(FN-2481): align Hermes runtime artifacts and compatibility coverage

- Regenerate fusion-plugin-hermes-runtime build artifacts and manifest metadata for runtime packaging
- Refactor Hermes runtime source into dedicated pi-module, runtime-adapter, and shared type modules
- Expand Hermes and engine plugin-runner tests to validate cross-runtime compatibility behavior
- Update getting-started, settings reference, and Hermes README docs to reflect the current runtime integration guidance

plugins/fusion-plugin-hermes-runtime/dist/pi-module.js

@@ -0,0 +1,11 @@
+/**
+ * Pi Module Seam
+ *
+ * Provides a mockable import path for pi functions used by the HermesRuntimeAdapter.
+ */
+// eslint-disable-next-line @typescript-eslint/no-require-imports
+const _piModule = require("../../../packages/engine/src/pi.js");
+export const createFnAgent = _piModule.createFnAgent;
+export const promptWithFallback = _piModule.promptWithFallback;
+export const describeModel = _piModule.describeModel;
+//# sourceMappingURL=pi-module.js.map