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/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "regenerator-runtime",
+  "author": "Ben Newman <bn@cs.stanford.edu>",
+  "description": "Runtime for Regenerator-compiled generator and async functions.",
+  "version": "0.13.4",
+  "main": "runtime.js",
+  "keywords": [
+    "regenerator",
+    "runtime",
+    "generator",
+    "async"
+  ],
+  "sideEffects": true,
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/facebook/regenerator/tree/master/packages/regenerator-runtime"
+  },
+  "license": "MIT"
+}