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/@babel/runtime/helpers/asyncToGenerator.js

@@ -0,0 +1,26 @@
+function asyncGeneratorStep(n, t, e, r, o, a, c) {
+  try {
+    var i = n[a](c),
+      u = i.value;
+  } catch (n) {
+    return void e(n);
+  }
+  i.done ? t(u) : Promise.resolve(u).then(r, o);
+}
+function _asyncToGenerator(n) {
+  return function () {
+    var t = this,
+      e = arguments;
+    return new Promise(function (r, o) {
+      var a = n.apply(t, e);
+      function _next(n) {
+        asyncGeneratorStep(a, r, o, _next, _throw, "next", n);
+      }
+      function _throw(n) {
+        asyncGeneratorStep(a, r, o, _next, _throw, "throw", n);
+      }
+      _next(void 0);
+    });
+  };
+}
+module.exports = _asyncToGenerator, module.exports.__esModule = true, module.exports["default"] = module.exports;