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/compiled/@vercel/og/index.node.d.ts

@@ -0,0 +1,27 @@
+/// <reference types="node" />
+import type { ReactElement } from 'react';
+import type { ImageResponseNodeOptions, ImageResponseOptions, FigmaImageResponseProps } from './types';
+import { Readable } from 'stream';
+export declare class ImageResponse extends Response {
+    constructor(element: ReactElement, options?: ImageResponseOptions);
+}
+/**
+ * Creates a pipeable stream of the rendered image in a lambda function.
+ * All parameters are the same as `ImageResponse`.
+ * @example
+ * ```js
+ * import { unstable_createNodejsStream } from '@vercel/og'
+ *
+ * export default async (req, res) => {
+ *   const stream = await unstable_createNodejsStream(<div>Hello World</div>, { ... })
+ *   res.setHeader('Content-Type', 'image/png')
+ *   res.setHeader('Cache-Control', 'public, max-age=31536000, immutable')
+ *   res.statusCode = 200
+ *   res.statusMessage = 'OK'
+ *   stream.pipe(res)
+ * }
+ * ```
+ */
+export declare function unstable_createNodejsStream(element: ReactElement, options?: Omit<ImageResponseNodeOptions, 'status' | 'statusText' | 'headers'>): Promise<Readable>;
+export declare const experimental_FigmaImageResponse: (props: FigmaImageResponseProps) => Promise<import("./index.edge").ImageResponse>;
+export declare type NodeImageResponse = typeof ImageResponse;