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/shared/lib/page-path/remove-page-path-tail.js

@@ -0,0 +1,20 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+Object.defineProperty(exports, "removePagePathTail", {
+    enumerable: true,
+    get: function() {
+        return removePagePathTail;
+    }
+});
+const _normalizepathsep = require("./normalize-path-sep");
+function removePagePathTail(pagePath, options) {
+    pagePath = (0, _normalizepathsep.normalizePathSep)(pagePath).replace(new RegExp("\\.+(?:" + options.extensions.join("|") + ")$"), "");
+    if (options.keepIndex !== true) {
+        pagePath = pagePath.replace(/\/index$/, "") || "/";
+    }
+    return pagePath;
+}
+
+//# sourceMappingURL=remove-page-path-tail.js.map