Fix early-bird price blending and mislabeling; add contact-only events

- Early-bird pricing: RegistrationOption now tracks each purchase as a
  separate price tranche instead of overwriting a single price/quantity
  on repeat purchases, so buying more tickets after a tier expires no
  longer re-prices tickets already bought at the old price. Stock-limit
  checks, total-due calculation, and the Finance report's revenue-by-
  option are all tranche-aware; pages that showed one blended price per
  line now render/total each tranche. Viewing a pending/partially-paid
  registration (dashboard, detail page, or an event's registration
  list) now refreshes stale pricing on the spot instead of only at
  payment time.
- Fixed the "(early bird)" dashboard label incorrectly firing on any
  line priced below the base option price (e.g. a plain cheaper
  variant) — it now checks the real applied-tier flag.
- Added contact-only events (e.g. baptism): no registration/payment
  flow, shown on the public site with a "Contact us" popup instead of
  a Register button. Configurable via the admin event wizard.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

backend/src/controllers/eventController.js

@@ -41,7 +41,7 @@ function toAbsoluteUrl(req, url) {
 // @access  Private/Admin
 const createEvent = async (req, res) => {
   try {
-    const { title, description, startDate, endDate, registrationDeadline, goLiveAt, price, picture, redirectUrl, isHidden, requiresAuth } = req.body;
+    const { title, description, startDate, endDate, registrationDeadline, goLiveAt, price, picture, redirectUrl, isHidden, requiresAuth, requiresRegistration, contactName, contactPhone, contactEmail } = req.body;
 
     const data = {
       id: uuidv4(),
@@ -58,14 +58,19 @@ const createEvent = async (req, res) => {
       redirectUrl,
       isHidden: isHidden === true || isHidden === 'true',
       requiresAuth: requiresAuth === false || requiresAuth === 'false' ? false : true,
+      requiresRegistration: requiresRegistration === false || requiresRegistration === 'false' ? false : true,
+      contactName: contactName || null,
+      contactPhone: contactPhone || null,
+      contactEmail: contactEmail || null,
     };
 
     try {
       const event = await prisma.event.create({ data });
 
-      // Automatically create a main ticket (event option) with the event price
+      // Automatically create a main ticket (event option) with the event price — contact-only
+      // events have no bookable options, so there's nothing to auto-create for them.
       try {
-        if (prisma && prisma.eventOption && typeof prisma.eventOption.create === 'function') {
+        if (data.requiresRegistration !== false && prisma && prisma.eventOption && typeof prisma.eventOption.create === 'function') {
           await prisma.eventOption.create({
             data: {
               id: uuidv4(),
@@ -454,7 +459,7 @@ const updateEvent = async (req, res) => {
     // totals — same rule already enforced for payments/costs. Admin can reopen first.
     await assertEventOpen(req.params.id, res);
 
-    const { title, description, startDate, endDate, registrationDeadline, goLiveAt, price, picture, isActive, redirectUrl, isHidden, requiresAuth } = req.body;
+    const { title, description, startDate, endDate, registrationDeadline, goLiveAt, price, picture, isActive, redirectUrl, isHidden, requiresAuth, requiresRegistration, contactName, contactPhone, contactEmail } = req.body;
 
     const data = {
       title: title || event.title,
@@ -468,6 +473,10 @@ const updateEvent = async (req, res) => {
       isActive: isActive !== undefined ? isActive : event.isActive,
       isHidden: isHidden !== undefined ? (isHidden === true || isHidden === 'true') : (event.isHidden ?? false),
       requiresAuth: requiresAuth !== undefined ? !(requiresAuth === false || requiresAuth === 'false') : (event.requiresAuth ?? true),
+      requiresRegistration: requiresRegistration !== undefined ? !(requiresRegistration === false || requiresRegistration === 'false') : (event.requiresRegistration ?? true),
+      contactName: contactName !== undefined ? (contactName || null) : event.contactName,
+      contactPhone: contactPhone !== undefined ? (contactPhone || null) : event.contactPhone,
+      contactEmail: contactEmail !== undefined ? (contactEmail || null) : event.contactEmail,
       updatedAt: new Date(),
       redirectUrl: redirectUrl !== undefined ? redirectUrl : event.redirectUrl,
     };