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/i18n-provider.d.ts

@@ -0,0 +1,65 @@
+import type { DomainLocale, I18NConfig } from '../../config-shared';
+import type { NextParsedUrlQuery } from '../../request-meta';
+/**
+ * The result of matching a locale aware route.
+ */
+export interface LocaleAnalysisResult {
+    /**
+     * The pathname without the locale prefix (if any).
+     */
+    pathname: string;
+    /**
+     * The detected locale. If no locale was detected, this will be `undefined`.
+     */
+    detectedLocale?: string;
+    /**
+     * True if the locale was inferred from the default locale.
+     */
+    inferredFromDefault: boolean;
+}
+type LocaleAnalysisOptions = {
+    /**
+     * When provided, it will be used as the default locale if the locale
+     * cannot be inferred from the pathname.
+     */
+    defaultLocale?: string;
+};
+/**
+ * The I18NProvider is used to match locale aware routes, detect the locale from
+ * the pathname and hostname and normalize the pathname by removing the locale
+ * prefix.
+ */
+export declare class I18NProvider {
+    readonly config: Readonly<I18NConfig>;
+    private readonly lowerCaseLocales;
+    private readonly lowerCaseDomains?;
+    constructor(config: Readonly<I18NConfig>);
+    /**
+     * Detects the domain locale from the hostname and the detected locale if
+     * provided.
+     *
+     * @param hostname The hostname to detect the domain locale from, this must be lowercased.
+     * @param detectedLocale The detected locale to use if the hostname does not match.
+     * @returns The domain locale if found, `undefined` otherwise.
+     */
+    detectDomainLocale(hostname?: string, detectedLocale?: string): DomainLocale | undefined;
+    /**
+     * Pulls the pre-computed locale and inference results from the query
+     * object.
+     *
+     * @param pathname the pathname that could contain a locale prefix
+     * @param query the query object
+     * @returns the locale analysis result
+     */
+    fromQuery(pathname: string, query: NextParsedUrlQuery): LocaleAnalysisResult;
+    /**
+     * Analyzes the pathname for a locale and returns the pathname without it.
+     *
+     * @param pathname The pathname that could contain a locale prefix.
+     * @param options The options to use when matching the locale.
+     * @returns The matched locale and the pathname without the locale prefix
+     *          (if any).
+     */
+    analyze(pathname: string, options?: LocaleAnalysisOptions): LocaleAnalysisResult;
+}
+export {};