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/api-utils/node/api-resolver.d.ts

@@ -0,0 +1,20 @@
+/// <reference types="node" />
+import type { IncomingMessage, ServerResponse } from 'http';
+import type { __ApiPreviewProps } from '../.';
+type RevalidateFn = (config: {
+    urlPath: string;
+    revalidateHeaders: {
+        [key: string]: string | string[];
+    };
+    opts: {
+        unstable_onlyGenerated?: boolean;
+    };
+}) => Promise<void>;
+type ApiContext = __ApiPreviewProps & {
+    trustHostHeader?: boolean;
+    allowedRevalidateHeaderKeys?: string[];
+    hostname?: string;
+    revalidate?: RevalidateFn;
+};
+export declare function apiResolver(req: IncomingMessage, res: ServerResponse, query: any, resolverModule: any, apiContext: ApiContext, propagateError: boolean, dev?: boolean, page?: string): Promise<void>;
+export {};