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/jest-worker/build/workers/messageParent.js

@@ -0,0 +1,33 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true
+});
+exports.default = messageParent;
+function _worker_threads() {
+  const data = require('worker_threads');
+  _worker_threads = function () {
+    return data;
+  };
+  return data;
+}
+var _types = require('../types');
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+function messageParent(message, parentProcess = process) {
+  if (!_worker_threads().isMainThread && _worker_threads().parentPort != null) {
+    _worker_threads().parentPort.postMessage([
+      _types.PARENT_MESSAGE_CUSTOM,
+      message
+    ]);
+  } else if (typeof parentProcess.send === 'function') {
+    parentProcess.send([_types.PARENT_MESSAGE_CUSTOM, message]);
+  } else {
+    throw new Error('"messageParent" can only be used inside a worker');
+  }
+}