Merges FN-3122's agents workspace redesign (split-pane layout, mobile responsiveness) and FN-3193's test infrastructure stabilization. The AgentsView and AgentDetailView components received major style and layout updates, with corresponding test coverage added. Several vitest config entries were con
Fusion-Task-Id: FN-3193
- Add an effective node resolver with task override, project default, and local fallback precedence.
- Wire scheduler dispatch to persist effectiveNodeId/effectiveNodeSource and log resolved node routing.
- Add coverage for effective node resolution and scheduler node routing integration behavior.
- Stabilize workspace test resolution by adding @fusion/core and @fusion/plugin-sdk aliases across Vitest configs.
- Add a dedicated gateway client seam and wire runtime adapter sessions through the new request path
- Remove legacy engine-guard/pi seam exports and align runtime types with gateway-facing behavior
- Fix gateway request/stream handling by preventing duplicate user turns, stabilizing tool-call callbacks, and adding a no-op session dispose hook
- Expand plugin test coverage for gateway client, adapter, and index behavior and document runtime gateway behavior in the README
- Add engine-guard-stub test modules for hermes, openclaw, and paperclip runtime plugins to fail fast on unmocked @fusion/engine imports
- Update each plugin Vitest config to alias @fusion/engine to the local guard stub during test runs
- Keep setup-engine-guard behavior while removing dependency on built engine dist artifacts for plugin-local tests
- Render a compact token usage indicator in TaskCard footer with accessible labeling and token-aware styling
- Track token usage fields in the TaskCard memo comparator and expose a comparator test helper for regression coverage
- Add TaskCard tests for token usage rendering behavior and comparator invalidation on token usage updates
- Configure runtime plugin Vitest setups with an @fusion/engine source alias for reliable workspace test resolution
- Keep restart integration child_process spawn mocking aligned with execSync-driven merge verification behavior
- Add fusion-plugin-openclaw-runtime workspace package with manifest, runtime metadata, and deferred placeholder factory
- Add unit tests for OpenClaw plugin behavior and PluginRunner runtime discovery compatibility
- Document OpenClaw runtime installation and runtimeHint usage in README, getting-started, and settings reference docs
- Include built dist artifacts for the new plugin and update workspace/lockfile entries
