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/compiled/regenerator-runtime/README.md

@@ -0,0 +1,31 @@
+# regenerator-runtime
+
+Standalone runtime for
+[Regenerator](https://github.com/facebook/regenerator)-compiled generator
+and `async` functions.
+
+To import the runtime as a module (recommended), either of the following
+import styles will work:
+```js
+// CommonJS
+const regeneratorRuntime = require("regenerator-runtime");
+
+// ECMAScript 2015
+import regeneratorRuntime from "regenerator-runtime";
+```
+
+To ensure that `regeneratorRuntime` is defined globally, either of the
+following styles will work:
+```js
+// CommonJS
+require("regenerator-runtime/runtime");
+
+// ECMAScript 2015
+import "regenerator-runtime/runtime";
+```
+
+To get the absolute file system path of `runtime.js`, evaluate the
+following expression:
+```js
+require("regenerator-runtime/path").path
+```