🎨 Palette: Add keyboard shortcuts to session summary

.Jules/palette.md

@@ -124,6 +124,10 @@
 **Learning:** For progress indicators to be truly accessible, they must include `role="progressbar"` along with `aria-valuenow`, `aria-valuemin`, and `aria-valuemax` attributes, allowing screen readers to accurately report status. In side-navigation rails, ensuring decorative icons are marked with `aria-hidden="true"` and the active link has `aria-current="page"` significantly improves screen reader navigation. Additionally, maintaining localization consistency (e.g., 'Inicio' vs 'Home') in new UI versions (V2) is essential for a cohesive user experience.
 **Action:** Always implement full ARIA attributes for progress components and audit new navigation structures for both accessibility markers and language consistency.
 
+## 2025-02-04 - [Shortcut Discoverability and Conflict Prevention in Session Summaries]
+**Learning:** Implementing keyboard shortcuts (`Enter`, `i`, `r`) for post-session actions significantly enhances efficiency for power users. Adding visual hints in brackets (e.g., `[Enter]`) directly to labels ensures these shortcuts are discoverable. Crucially, when mapping `Enter` to a primary action like "New Session", checking `e.target.tagName !== 'BUTTON'` prevents conflicts with standard browser button activation, ensuring a predictable experience during keyboard navigation.
+**Action:** Always provide visual hints for keyboard shortcuts and implement target checks to avoid conflicts with native browser interactions.
+
 ## 2025-06-17 - [Accessible Checkboxes and Consistent Prop Spreading]
 **Learning:** Enhancing base form components like `CustomCheckbox` with standardized `required` indicators (visual asterisk and `aria-required`) and grid support (`s`, `m`, `l`, `xl`, `offset`) improves both accessibility and developer productivity. Ensuring that `...props` are consistently applied to the inner `input` regardless of the presence of a wrapper `div` maintains a predictable component API.
 **Action:** Always provide visual and semantic cues for mandatory fields and ensure consistent prop-spreading behavior in multi-layered components.

src/v2/pages/V2SessionSummary.jsx

@@ -1,4 +1,4 @@
-import { useState, useEffect, useMemo } from 'react';
+import { useState, useEffect, useMemo, useCallback } from 'react';
 import { useHistory, useLocation, Link } from 'react-router-dom';
 import LeaderboardService from '../../services/LeaderboardService';
 import Auth from '../../modules/Auth';
@@ -87,17 +87,38 @@ const V2SessionSummary = () => {
     return 'var(--md-sys-color-error)';
   };
 
-  const handleNewSession = () => {
+  const handleNewSession = useCallback(() => {
     history.push('/practica');
-  };
+  }, [history]);
 
-  const handleGoToDashboard = () => {
+  const handleGoToDashboard = useCallback(() => {
     history.push('/dashboard');
-  };
+  }, [history]);
 
-  const handleReviewMistakes = () => {
+  const handleReviewMistakes = useCallback(() => {
     history.push('/errores');
-  };
+  }, [history]);
+
+  // Keyboard shortcuts
+  useEffect(() => {
+    const handleKeyDown = (e) => {
+      // Don't trigger if user is typing in an input or textarea
+      if (e.target.tagName === 'INPUT' || e.target.tagName === 'TEXTAREA') return;
+
+      const key = e.key.toLowerCase();
+
+      if (key === 'enter' && e.target.tagName !== 'BUTTON') {
+        handleNewSession();
+      } else if (key === 'i') {
+        handleGoToDashboard();
+      } else if (key === 'r' && (totalQuestions - correctAnswers > 0)) {
+        handleReviewMistakes();
+      }
+    };
+
+    window.addEventListener('keydown', handleKeyDown);
+    return () => window.removeEventListener('keydown', handleKeyDown);
+  }, [handleNewSession, handleGoToDashboard, handleReviewMistakes, totalQuestions, correctAnswers]);
 
   return (
     <div className='v2-page-medium v2-text-center'>
@@ -208,32 +229,35 @@ const V2SessionSummary = () => {
           className='v2-btn-tonal v2-btn-h-56'
           onClick={handleGoToDashboard}
           style={{ padding: '0 32px' }}
-          aria-label='Volver al inicio'
+          aria-label='Volver al inicio (atajo: i)'
+          title='Atajo: i'
         >
           <i className='material-icons' aria-hidden='true'>home</i>
-          Inicio
+          Inicio <span className='v2-opacity-50' style={{ fontSize: '0.8em', marginLeft: '4px' }}>[i]</span>
         </button>
 
         {totalQuestions - correctAnswers > 0 && (
           <button 
             className='v2-btn-tonal v2-btn-h-56'
             onClick={handleReviewMistakes}
             style={{ padding: '0 32px' }}
-            aria-label='Revisar errores'
+            aria-label='Revisar errores (atajo: r)'
+            title='Atajo: r'
           >
             <i className='material-icons' aria-hidden='true'>error_outline</i>
-            Revisar Errores
+            Revisar Errores <span className='v2-opacity-50' style={{ fontSize: '0.8em', marginLeft: '4px' }}>[r]</span>
           </button>
         )}
 
         <button 
           className='v2-btn-filled v2-btn-h-56' 
           onClick={handleNewSession}
           style={{ padding: '0 32px' }}
-          aria-label='Nueva sesión de práctica'
+          aria-label='Nueva sesión de práctica (atajo: Enter)'
+          title='Atajo: Enter'
         >
           <i className='material-icons' aria-hidden='true'>refresh</i>
-          Nueva Sesión
+          Nueva Sesión <span className='v2-opacity-50' style={{ fontSize: '0.8em', marginLeft: '4px' }}>[Enter]</span>
         </button>
       </div>
 

src/v2/pages/V2SessionSummary.test.jsx

@@ -0,0 +1,117 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { render, screen, fireEvent, act, waitFor } from '@testing-library/react';
+import { Router } from 'react-router-dom';
+import { createMemoryHistory } from 'history';
+import V2SessionSummary from './V2SessionSummary';
+import LeaderboardService from '../../services/LeaderboardService';
+import Auth from '../../modules/Auth';
+
+vi.mock('../../services/LeaderboardService');
+vi.mock('../../modules/Auth');
+
+describe('V2SessionSummary', () => {
+  const mockLocation = {
+    state: {
+      totalQuestions: 10,
+      correctAnswers: 8,
+      xpEarned: 450,
+      timeElapsed: 120
+    }
+  };
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    Auth.getUserInfo.mockReturnValue({ id: '1', name: 'García' });
+    // Return a never-resolving promise for leaderboard to avoid async state updates after render
+    LeaderboardService.getTopUsers.mockReturnValue(new Promise(() => {}));
+  });
+
+  const renderWithRouter = (state = mockLocation.state) => {
+    const history = createMemoryHistory();
+    history.push({
+      pathname: '/simulacro/resumen',
+      state
+    });
+    const pushSpy = vi.spyOn(history, 'push');
+
+    render(
+      <Router history={history}>
+        <V2SessionSummary />
+      </Router>
+    );
+    return { history, pushSpy };
+  };
+
+  it('renders session statistics correctly', async () => {
+    renderWithRouter();
+
+    expect(screen.getAllByText('80%')).toBeDefined();
+    expect(screen.getByText('+450')).toBeDefined();
+    expect(screen.getByText('02:00')).toBeDefined();
+    expect(screen.getByText('8/10')).toBeDefined();
+    expect(screen.getByText('2/10')).toBeDefined();
+    await waitFor(() => {});
+  });
+
+  it('navigates to dashboard on "Inicio" click', async () => {
+    const { pushSpy } = renderWithRouter();
+
+    const dashboardBtn = screen.getByLabelText('Volver al inicio (atajo: i)');
+    fireEvent.click(dashboardBtn);
+
+    expect(pushSpy).toHaveBeenCalledWith('/dashboard');
+    await waitFor(() => {});
+  });
+
+  it('navigates to dashboard on "i" key press', async () => {
+    const { pushSpy } = renderWithRouter();
+
+    fireEvent.keyDown(window, { key: 'i' });
+
+    expect(pushSpy).toHaveBeenCalledWith('/dashboard');
+    await waitFor(() => {});
+  });
+
+  it('navigates to practice on "Nueva Sesión" click', async () => {
+    const { pushSpy } = renderWithRouter();
+
+    const newSessionBtn = screen.getByLabelText('Nueva sesión de práctica (atajo: Enter)');
+    fireEvent.click(newSessionBtn);
+
+    expect(pushSpy).toHaveBeenCalledWith('/practica');
+    await waitFor(() => {});
+  });
+
+  it('navigates to practice on "Enter" key press', async () => {
+    const { pushSpy } = renderWithRouter();
+
+    fireEvent.keyDown(window, { key: 'Enter' });
+
+    expect(pushSpy).toHaveBeenCalledWith('/practica');
+    await waitFor(() => {});
+  });
+
+  it('navigates to error review on "r" key press when there are mistakes', async () => {
+    const { pushSpy } = renderWithRouter({
+      totalQuestions: 10,
+      correctAnswers: 8
+    });
+
+    fireEvent.keyDown(window, { key: 'r' });
+
+    expect(pushSpy).toHaveBeenCalledWith('/errores');
+    await waitFor(() => {});
+  });
+
+  it('does not navigate to error review on "r" key press when there are no mistakes', async () => {
+    const { pushSpy } = renderWithRouter({
+      totalQuestions: 10,
+      correctAnswers: 10
+    });
+
+    fireEvent.keyDown(window, { key: 'r' });
+
+    expect(pushSpy).not.toHaveBeenCalledWith('/errores');
+    await waitFor(() => {});
+  });
+});