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/server/serve-static.js

@@ -0,0 +1,22 @@
+import send from "next/dist/compiled/send";
+// TODO: Remove this once "send" has updated the "mime", or next.js use custom version of "mime"
+// Although "mime" has already add avif in version 2.4.7, "send" is still using mime@1.6.0
+send.mime.define({
+    "image/avif": [
+        "avif"
+    ]
+});
+export function serveStatic(req, res, path, opts) {
+    return new Promise((resolve, reject)=>{
+        send(req, path, opts).on("directory", ()=>{
+            // We don't allow directories to be read.
+            const err = new Error("No directory access");
+            err.code = "ENOENT";
+            reject(err);
+        }).on("error", reject).pipe(res).on("finish", resolve);
+    });
+}
+export const getContentType = "getType" in send.mime ? (extWithoutDot)=>send.mime.getType(extWithoutDot) : (extWithoutDot)=>send.mime.lookup(extWithoutDot);
+export const getExtension = "getExtension" in send.mime ? (contentType)=>send.mime.getExtension(contentType) : (contentType)=>send.mime.extension(contentType);
+
+//# sourceMappingURL=serve-static.js.map