feat(FN-2263): merge fusion/fn-2263 (auto-resolved)

- docs(FN-2263): update README with scaffolded scope and deferral documentation
- test(FN-2263): verify hermes runtime plugin build and tests
- feat(FN-2263): implement plugin entrypoint with runtime registration shell
- feat(FN-2263): scaffold Hermes runtime plugin package
- test(FN-2256): add mocks for createResolvedAgentSession in tests
- docs(FN-2256): update architecture docs and add changeset
- fix(FN-2256): fix lint errors and TypeScript issues
- feat(FN-2256): add runtime selection regression tests — Step 4
- feat(FN-2256): route engine session creation through runtime resolver — Step 3
- feat(FN-2256): extend PluginRunner runtime lookup surface — Step 2
- feat(FN-2256): add runtime abstraction and resolver — Step 1

pnpm-lock.yaml

@@ -471,7 +471,7 @@ importers:
         specifier: ^3.2.4
         version: 3.2.4(@types/debug@4.1.13)(@types/node@25.5.2)(jiti@2.6.1)(jsdom@29.0.1)(tsx@4.21.0)(yaml@2.8.3)
 
-  plugins/fusion-plugin-paperclip-runtime:
+  plugins/fusion-plugin-hermes-runtime:
     dependencies:
       '@fusion/plugin-sdk':
         specifier: workspace:*