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/lib/eslint/customFormatter.d.ts

@@ -0,0 +1,26 @@
+export declare enum MessageSeverity {
+    Warning = 1,
+    Error = 2
+}
+interface LintMessage {
+    ruleId: string | null;
+    severity: 1 | 2;
+    message: string;
+    line: number;
+    column: number;
+}
+export interface LintResult {
+    filePath: string;
+    messages: LintMessage[];
+    errorCount: number;
+    warningCount: number;
+    output?: string;
+    source?: string;
+}
+export declare function formatResults(baseDir: string, results: LintResult[], format: (r: LintResult[]) => string): {
+    output: string;
+    outputWithMessages: string;
+    totalNextPluginErrorCount: number;
+    totalNextPluginWarningCount: number;
+};
+export {};