feat: ship v0.6.0 with cockpit, knowledge base, and chapter bridge

Deliver P5 writer workflow: writing cockpit, manual knowledge CRUD with review, chapter bridge with optional AI, publish status, and stock buffer reminders.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/renderer/components/settings/SettingsPage.tsx

@@ -97,13 +97,47 @@ export function SettingsPage(): React.JSX.Element {
                 <option value="en">English</option>
               </select>
             </div>
+            <div className="setting-item">
+              <span>{t('settings.updateSchedule')}</span>
+              <select
+                data-testid="settings-update-schedule"
+                className="form-control"
+                value={settings.updateSchedule}
+                onChange={(e) =>
+                  void settings.update({
+                    updateSchedule: e.target.value as typeof settings.updateSchedule
+                  })
+                }
+              >
+                <option value="none">{t('settings.updateSchedule.none')}</option>
+                <option value="daily">{t('settings.updateSchedule.daily')}</option>
+                <option value="alternate">{t('settings.updateSchedule.alternate')}</option>
+                <option value="weekly">{t('settings.updateSchedule.weekly')}</option>
+              </select>
+            </div>
+            <div className="setting-item">
+              <span>{t('settings.stockBufferThreshold')}</span>
+              <input
+                type="number"
+                min={1}
+                max={20}
+                data-testid="settings-stock-threshold"
+                className="form-control form-control--narrow"
+                value={settings.stockBufferThreshold}
+                onChange={(e) =>
+                  void settings.update({
+                    stockBufferThreshold: Math.min(20, Math.max(1, Number(e.target.value) || 3))
+                  })
+                }
+              />
+            </div>
           </>
         )}
         {section === 'ai' && <AiSettingsPage />}
         {section === 'shortcuts' && <ShortcutEditor />}
         {section === 'about' && (
           <p style={{ color: 'var(--text-secondary)', lineHeight: 1.8 }}>
-            {t('app.name')} v0.5.0
+            {t('app.name')} v0.6.0
             <br />
             {t('app.tagline')}
           </p>