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/route-matcher-managers/route-matcher-manager.d.ts

@@ -0,0 +1,55 @@
+import type { RouteMatch } from '../route-matches/route-match';
+import type { RouteMatcherProvider } from '../route-matcher-providers/route-matcher-provider';
+import type { LocaleAnalysisResult } from '../helpers/i18n-provider';
+export type MatchOptions = {
+    skipDynamic?: boolean;
+    /**
+     * If defined, this indicates to the matcher that the request should be
+     * treated as locale-aware. If this is undefined, it means that this
+     * application was not configured for additional locales.
+     */
+    i18n?: LocaleAnalysisResult | undefined;
+};
+export interface RouteMatcherManager {
+    /**
+     * Returns a promise that resolves when the matcher manager has finished
+     * reloading.
+     */
+    waitTillReady(): Promise<void>;
+    /**
+     * Pushes in a new matcher for this manager to manage. After all the
+     * providers have been pushed, the manager must be reloaded.
+     *
+     * @param provider the provider for this manager to also manage
+     */
+    push(provider: RouteMatcherProvider): void;
+    /**
+     * Reloads the matchers from the providers. This should be done after all the
+     * providers have been added or the underlying providers should be refreshed.
+     */
+    reload(): Promise<void>;
+    /**
+     * Tests the underlying matchers to find a match. It does not return the
+     * match.
+     *
+     * @param pathname the pathname to test for matches
+     * @param options the options for the testing
+     */
+    test(pathname: string, options: MatchOptions): Promise<boolean>;
+    /**
+     * Returns the first match for a given request.
+     *
+     * @param pathname the pathname to match against
+     * @param options the options for the matching
+     */
+    match(pathname: string, options: MatchOptions): Promise<RouteMatch | null>;
+    /**
+     * Returns a generator for each match for a given request. This should be
+     * consumed in a `for await (...)` loop, when finished, breaking or returning
+     * from the loop will terminate the matching operation.
+     *
+     * @param pathname the pathname to match against
+     * @param options the options for the matching
+     */
+    matchAll(pathname: string, options: MatchOptions): AsyncGenerator<RouteMatch, null, undefined>;
+}