feat(signup): community guidelines agreement and policies routes

Introduces /community-guidelines and /policies/{privacy,terms,[slug]} pages,
swaps the signup/invite checkbox from agreedToTerms to agreedToGuidelines,
adds Member.agreement.acceptedAt, and stamps the field when a Helcim
customer is created.

tests/server/api/validation.test.js

@@ -6,7 +6,8 @@ import {
   memberProfileUpdateSchema,
   eventRegistrationSchema,
   paymentVerifySchema,
-  adminEventCreateSchema
+  adminEventCreateSchema,
+  seriesTicketPurchaseSchema
 } from '../../../server/utils/schemas.js'
 import { validateBody } from '../../../server/utils/validateBody.js'
 
@@ -183,6 +184,42 @@ describe('memberProfileUpdateSchema', () => {
   })
 })
 
+describe('seriesTicketPurchaseSchema', () => {
+  const validBody = {
+    name: 'Test User',
+    email: 'test@example.com',
+    ticketType: 'member'
+  }
+
+  it('accepts member, public, and guest ticket types', () => {
+    for (const ticketType of ['member', 'public', 'guest']) {
+      const result = seriesTicketPurchaseSchema.safeParse({ ...validBody, ticketType })
+      expect(result.success).toBe(true)
+    }
+  })
+
+  it('rejects a body missing ticketType (closes pricing-mismatch gap)', () => {
+    const { ticketType, ...rest } = validBody
+    const result = seriesTicketPurchaseSchema.safeParse(rest)
+    expect(result.success).toBe(false)
+  })
+
+  it('rejects null ticketType', () => {
+    const result = seriesTicketPurchaseSchema.safeParse({ ...validBody, ticketType: null })
+    expect(result.success).toBe(false)
+  })
+
+  it('rejects an unknown ticketType value', () => {
+    const result = seriesTicketPurchaseSchema.safeParse({ ...validBody, ticketType: 'vip' })
+    expect(result.success).toBe(false)
+  })
+
+  it('rejects empty-string ticketType', () => {
+    const result = seriesTicketPurchaseSchema.safeParse({ ...validBody, ticketType: '' })
+    expect(result.success).toBe(false)
+  })
+})
+
 // --- validateBody integration tests ---
 
 describe('validateBody', () => {