Expand the frontend with brain, graph, and chat workspace updates so the
new backend orchestration and memory features have matching screens.
These changes also wire the new APIs into routing and add focused view
and routing tests.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Keep folder selection stable across refreshes, surface upload failures
more clearly, and add focused composable tests for the knowledge page.
This keeps newly uploaded files visible and makes MinerU dependency
errors easier to understand from the frontend.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Reorganize the frontend around app-level routing and page modules so the runtime and feature screens share a clearer navigation and composition layout for future work.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
