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/esm/lib/is-internal-component.js

@@ -0,0 +1,14 @@
+export function isInternalComponent(pathname) {
+    switch(pathname){
+        case "next/dist/pages/_app":
+        case "next/dist/pages/_document":
+            return true;
+        default:
+            return false;
+    }
+}
+export function isNonRoutePagesPage(pathname) {
+    return pathname === "/_app" || pathname === "/_document";
+}
+
+//# sourceMappingURL=is-internal-component.js.map