[verified] feat: auto-start next timer

src/features/settings/SettingsPanel.tsx

@@ -113,6 +113,18 @@ function SettingsPanel({ settings, persistenceError, onChange, onClose, onReset
                 />
               </label>
             </div>
+            <label className="timer-toggle">
+              <input
+                aria-label="Automatically start next timer"
+                checked={settings.autoStartNext}
+                onChange={(event) => update('autoStartNext', event.target.checked)}
+                type="checkbox"
+              />
+              <span>
+                <strong>Automatically start next timer</strong>
+                <small>Continue from focus to break, then back to focus.</small>
+              </span>
+            </label>
           </section>
 
           <section className="settings-section">

src/features/settings/settings.test.ts

@@ -9,6 +9,17 @@ import {
 import { IndexedDbSettingsStore } from './settings-store'
 
 describe('application settings', () => {
+  it('automatically starts the next timer by default', () => {
+    expect(DEFAULT_SETTINGS.autoStartNext).toBe(true)
+  })
+
+  it('preserves an explicit auto-start opt-out during normalization', () => {
+    expect(normalizeSettings({
+      ...DEFAULT_SETTINGS,
+      autoStartNext: false,
+    }).autoStartNext).toBe(false)
+  })
+
   it('uses an overlay default aligned with the slider step', () => {
     expect(DEFAULT_SETTINGS.overlayOpacity).toBe(0.2)
   })

src/features/settings/settings.ts

@@ -17,6 +17,7 @@ export interface AppSettings {
   focusMinutes: number
   shortBreakMinutes: number
   longBreakMinutes: number
+  autoStartNext: boolean
   fontId: FontId
   backgroundId: BackgroundId
   overlayOpacity: number
@@ -27,6 +28,7 @@ export const DEFAULT_SETTINGS: AppSettings = {
   focusMinutes: 25,
   shortBreakMinutes: 5,
   longBreakMinutes: 15,
+  autoStartNext: true,
   fontId: 'space',
   backgroundId: 'violet',
   overlayOpacity: 0.2,
@@ -53,6 +55,10 @@ export function normalizeSettings(value: unknown): AppSettings {
     focusMinutes: clampInteger(candidate.focusMinutes, 1, 120, DEFAULT_SETTINGS.focusMinutes),
     shortBreakMinutes: clampInteger(candidate.shortBreakMinutes, 1, 60, DEFAULT_SETTINGS.shortBreakMinutes),
     longBreakMinutes: clampInteger(candidate.longBreakMinutes, 1, 90, DEFAULT_SETTINGS.longBreakMinutes),
+    autoStartNext:
+      typeof candidate.autoStartNext === 'boolean'
+        ? candidate.autoStartNext
+        : DEFAULT_SETTINGS.autoStartNext,
     fontId: isOneOf(candidate.fontId, FONT_IDS) ? candidate.fontId : DEFAULT_SETTINGS.fontId,
     backgroundId: isOneOf(candidate.backgroundId, BACKGROUND_IDS)
       ? candidate.backgroundId