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/build/webpack/loaders/next-flight-action-entry-loader.js

@@ -0,0 +1,47 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+Object.defineProperty(exports, "default", {
+    enumerable: true,
+    get: function() {
+        return _default;
+    }
+});
+const _utils = require("./utils");
+function nextFlightActionEntryLoader() {
+    const { actions } = this.getOptions();
+    const actionList = JSON.parse(actions);
+    const individualActions = actionList.map(([path, names])=>{
+        return names.map((name)=>{
+            const id = (0, _utils.generateActionId)(path, name);
+            return [
+                id,
+                path,
+                name
+            ];
+        });
+    }).flat();
+    return `
+const actions = {
+${individualActions.map(([id, path, name])=>{
+        return `'${id}': () => import(/* webpackMode: "eager" */ ${JSON.stringify(path)}).then(mod => mod[${JSON.stringify(name)}]),`;
+    }).join("\n")}
+}
+
+async function endpoint(id, ...args) {
+  const action = await actions[id]()
+  return action.apply(null, args)
+}
+
+// Using CJS to avoid this to be tree-shaken away due to unused exports.
+module.exports = {
+${individualActions.map(([id])=>{
+        return `  '${id}': endpoint.bind(null, '${id}'),`;
+    }).join("\n")}
+}
+`;
+}
+const _default = nextFlightActionEntryLoader;
+
+//# sourceMappingURL=next-flight-action-entry-loader.js.map