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/server/future/helpers/interception-routes.js

@@ -0,0 +1,89 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+0 && (module.exports = {
+    INTERCEPTION_ROUTE_MARKERS: null,
+    extractInterceptionRouteInformation: null,
+    isInterceptionRouteAppPath: null
+});
+function _export(target, all) {
+    for(var name in all)Object.defineProperty(target, name, {
+        enumerable: true,
+        get: all[name]
+    });
+}
+_export(exports, {
+    INTERCEPTION_ROUTE_MARKERS: function() {
+        return INTERCEPTION_ROUTE_MARKERS;
+    },
+    extractInterceptionRouteInformation: function() {
+        return extractInterceptionRouteInformation;
+    },
+    isInterceptionRouteAppPath: function() {
+        return isInterceptionRouteAppPath;
+    }
+});
+const _apppaths = require("../../../shared/lib/router/utils/app-paths");
+const INTERCEPTION_ROUTE_MARKERS = [
+    "(..)(..)",
+    "(.)",
+    "(..)",
+    "(...)"
+];
+function isInterceptionRouteAppPath(path) {
+    // TODO-APP: add more serious validation
+    return path.split("/").find((segment)=>INTERCEPTION_ROUTE_MARKERS.find((m)=>segment.startsWith(m))) !== undefined;
+}
+function extractInterceptionRouteInformation(path) {
+    let interceptingRoute, marker, interceptedRoute;
+    for (const segment of path.split("/")){
+        marker = INTERCEPTION_ROUTE_MARKERS.find((m)=>segment.startsWith(m));
+        if (marker) {
+            [interceptingRoute, interceptedRoute] = path.split(marker, 2);
+            break;
+        }
+    }
+    if (!interceptingRoute || !marker || !interceptedRoute) {
+        throw new Error(`Invalid interception route: ${path}. Must be in the format /<intercepting route>/(..|...|..)(..)/<intercepted route>`);
+    }
+    interceptingRoute = (0, _apppaths.normalizeAppPath)(interceptingRoute) // normalize the path, e.g. /(blog)/feed -> /feed
+    ;
+    switch(marker){
+        case "(.)":
+            // (.) indicates that we should match with sibling routes, so we just need to append the intercepted route to the intercepting route
+            if (interceptingRoute === "/") {
+                interceptedRoute = `/${interceptedRoute}`;
+            } else {
+                interceptedRoute = interceptingRoute + "/" + interceptedRoute;
+            }
+            break;
+        case "(..)":
+            // (..) indicates that we should match at one level up, so we need to remove the last segment of the intercepting route
+            if (interceptingRoute === "/") {
+                throw new Error(`Invalid interception route: ${path}. Cannot use (..) marker at the root level, use (.) instead.`);
+            }
+            interceptedRoute = interceptingRoute.split("/").slice(0, -1).concat(interceptedRoute).join("/");
+            break;
+        case "(...)":
+            // (...) will match the route segment in the root directory, so we need to use the root directory to prepend the intercepted route
+            interceptedRoute = "/" + interceptedRoute;
+            break;
+        case "(..)(..)":
+            // (..)(..) indicates that we should match at two levels up, so we need to remove the last two segments of the intercepting route
+            const splitInterceptingRoute = interceptingRoute.split("/");
+            if (splitInterceptingRoute.length <= 2) {
+                throw new Error(`Invalid interception route: ${path}. Cannot use (..)(..) marker at the root level or one level up.`);
+            }
+            interceptedRoute = splitInterceptingRoute.slice(0, -2).concat(interceptedRoute).join("/");
+            break;
+        default:
+            throw new Error("Invariant: unexpected marker");
+    }
+    return {
+        interceptingRoute,
+        interceptedRoute
+    };
+}
+
+//# sourceMappingURL=interception-routes.js.map