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/tailwindcss/lib/util/parseDependency.js

@@ -0,0 +1,47 @@
+// @ts-check
+/**
+ * @typedef {{type: 'dependency', file: string} | {type: 'dir-dependency', dir: string, glob: string}} Dependency
+ */ /**
+ *
+ * @param {import('../lib/content.js').ContentPath} contentPath
+ * @returns {Dependency[]}
+ */ "use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+Object.defineProperty(exports, "default", {
+    enumerable: true,
+    get: function() {
+        return parseDependency;
+    }
+});
+function parseDependency(contentPath) {
+    if (contentPath.ignore) {
+        return [];
+    }
+    if (!contentPath.glob) {
+        return [
+            {
+                type: "dependency",
+                file: contentPath.base
+            }
+        ];
+    }
+    if (process.env.ROLLUP_WATCH === "true") {
+        // rollup-plugin-postcss does not support dir-dependency messages
+        // but directories can be watched in the same way as files
+        return [
+            {
+                type: "dependency",
+                file: contentPath.base
+            }
+        ];
+    }
+    return [
+        {
+            type: "dir-dependency",
+            dir: contentPath.base,
+            glob: contentPath.glob
+        }
+    ];
+}