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/experimental/testmode/server-edge.js

@@ -0,0 +1,32 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+0 && (module.exports = {
+    interceptTestApis: null,
+    wrapRequestHandler: null
+});
+function _export(target, all) {
+    for(var name in all)Object.defineProperty(target, name, {
+        enumerable: true,
+        get: all[name]
+    });
+}
+_export(exports, {
+    interceptTestApis: function() {
+        return interceptTestApis;
+    },
+    wrapRequestHandler: function() {
+        return wrapRequestHandler;
+    }
+});
+const _context = require("./context");
+const _fetch = require("./fetch");
+function interceptTestApis() {
+    return (0, _fetch.interceptFetch)(global.fetch);
+}
+function wrapRequestHandler(handler) {
+    return (req, fn)=>(0, _context.withRequest)(req, _fetch.reader, ()=>handler(req, fn));
+}
+
+//# sourceMappingURL=server-edge.js.map