Add general calendar events (recording, social, task, general); nav links; v1.1.16

- Four event types on the calendar: General, Recording, Social, Task — each color-coded
- + Event button opens form with type picker, title, date, notes, reminder
- Task events have a Mark Complete toggle; completed events show strikethrough
- Edit/delete popover for each event
- Email reminders work for calendar events same as episodes
- Added Email/Calendar nav links to /contacts header
- Added Email link to /calendar header (already had Admin)
- /email already links to Contacts and Calendar

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

server.js

@@ -24,6 +24,7 @@ import {
   loadPodcastChecklistFromDisk,
   loadAnalyticsEventsFromDisk,
   loadEmailSettingsFromDisk,
+  loadCalendarEventsFromDisk,
   createBackupSnapshot,
   refreshContentCaches,
   queueHitStatsWrite,
@@ -50,6 +51,7 @@ import { register as registerStudyComments } from './server/routes/study-comment
 import { register as registerStudyCertificate } from './server/routes/study-certificate.js'
 import { register as registerEpisodeScripts } from './server/routes/episode-scripts.js'
 import { register as registerContact } from './server/routes/contact.js'
+import { register as registerCalendarEvents } from './server/routes/calendar-events.js'
 import { startReminderScheduler } from './server/reminder.js'
 import { register as registerInboundEmail } from './server/routes/inbound-email.js'
 import { register as registerQuestions } from './server/routes/questions.js'
@@ -97,6 +99,7 @@ registerStudyComments(app)
 registerStudyCertificate(app)
 registerEpisodeScripts(app)
 registerContact(app)
+registerCalendarEvents(app)
 registerInboundEmail(app)
 registerQuestions(app)
 registerAnalytics(app)
@@ -146,6 +149,7 @@ Promise.all([
   loadPodcastChecklistFromDisk(),
   loadAnalyticsEventsFromDisk(),
   loadEmailSettingsFromDisk(),
+  loadCalendarEventsFromDisk(),
   refreshContentCaches(),
 ])
   .catch(err => {