Add side panels, task selection, graph animation, and project docs

- Foldable left panel (user profile) and right panel (task details)
- Clicking a task in the list or graph node selects it and shows details
- Both views (task list + graph) always mounted via absolute inset-0 for
  correct canvas dimensions; tabs toggle visibility with opacity
- Graph node selection animation: other nodes repel outward (charge -600),
  then selected node smoothly slides to center (500ms cubic ease-out),
  then charge restores to -120 and graph stabilizes
- Graph re-fits on tab switch and panel resize via ResizeObserver
- Fix UUID string IDs throughout (backend returns UUIDs, not integers)
- Add TaskDetailPanel, UserPanel components
- Add CLAUDE.md project documentation

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/node_modules/next/dist/server/app-render/use-flight-response.d.ts

@@ -0,0 +1,27 @@
+import type { ClientReferenceManifest } from '../../build/webpack/plugins/flight-manifest-plugin';
+import type { BinaryStreamOf } from './app-render';
+/**
+ * Render Flight stream.
+ * This is only used for renderToHTML, the Flight response does not need additional wrappers.
+ */
+export declare function useFlightStream<T>(flightStream: BinaryStreamOf<T>, clientReferenceManifest: ClientReferenceManifest, nonce?: string): Promise<T>;
+/**
+ * There are times when an SSR render may be finished but the RSC render
+ * is ongoing and we need to wait for it to complete to make some determination
+ * about how to handle the render. This function will drain the RSC reader and
+ * resolve when completed. This will generally require teeing the RSC stream and it
+ * should be noted that it will cause all the RSC chunks to queue in the underlying
+ * ReadableStream however given Flight currently is a push stream that doesn't respond
+ * to backpressure this shouldn't change how much memory is maximally consumed
+ */
+export declare function flightRenderComplete(flightStream: ReadableStream<Uint8Array>): Promise<void>;
+/**
+ * Creates a ReadableStream provides inline script tag chunks for writing hydration
+ * data to the client outside the React render itself.
+ *
+ * @param flightStream The RSC render stream
+ * @param nonce optionally a nonce used during this particular render
+ * @param formState optionally the formState used with this particular render
+ * @returns a ReadableStream without the complete property. This signifies a lazy ReadableStream
+ */
+export declare function createInlinedDataReadableStream(flightStream: ReadableStream<Uint8Array>, nonce: string | undefined, formState: unknown | null): ReadableStream<Uint8Array>;