chore(simplify): trim narrating comments and dedup test body

Test file: drop step markers, regression explainers, and the lead
comment block that restated the contract; hoist the shared subscription
request body to a const; move Member mock defaults into the test that
uses them. Two it() cases unchanged.

Events page: drop WCAG comment that narrated what the
.past-toggle:focus-visible selector already says.

tests/server/api/free-signup-flow.test.js

@@ -8,11 +8,8 @@ import { resetRateLimit } from '../../../server/utils/rateLimit.js'
 import { sendWelcomeEmail } from '../../../server/utils/resend.js'
 import { createMockEvent } from '../helpers/createMockEvent.js'
 
-// IMPORTANT: do NOT mock server/utils/auth.js. This test exists to verify the
-// real bridge-cookie hand-off between the two handlers. Mocking auth would
-// hide the exact regression we're guarding against (setPaymentBridgeCookie
-// being skipped for $0 signups while subscription.post.js still requires
-// either a bridge cookie or a verified session).
+// Deliberately does NOT mock server/utils/auth.js — the bridge-cookie
+// hand-off between the two handlers is the contract under test.
 
 vi.mock('../../../server/models/member.js', () => ({
   default: {
@@ -49,6 +46,14 @@ vi.stubGlobal('helcimSubscriptionSchema', {})
 const ALLOWED_ORIGIN = 'https://ghostguild.test'
 const MEMBER_ID = '69f231152939bf109ac79d83'
 
+const SUBSCRIPTION_BODY = {
+  customerId: 999,
+  customerCode: 'CST999',
+  contributionAmount: 0,
+  cadence: 'monthly',
+  cardToken: null
+}
+
 function extractBridgeCookie(event) {
   const setCookie = event.node.res.getHeader('set-cookie')
   const cookies = Array.isArray(setCookie) ? setCookie : [setCookie].filter(Boolean)
@@ -64,6 +69,9 @@ describe('signup → subscription bridge-cookie hand-off', () => {
     process.env.BASE_URL = ALLOWED_ORIGIN
 
     createHelcimCustomer.mockResolvedValue({ id: 999, customerCode: 'CST999' })
+  })
+
+  it('$0 signup: customer endpoint issues a bridge cookie that subscription endpoint accepts', async () => {
     Member.findOne.mockResolvedValue(null)
     Member.create.mockResolvedValue({
       _id: MEMBER_ID,
@@ -73,10 +81,7 @@ describe('signup → subscription bridge-cookie hand-off', () => {
       contributionAmount: 0,
       status: 'pending_payment'
     })
-  })
 
-  it('$0 signup: customer endpoint issues a bridge cookie that subscription endpoint accepts', async () => {
-    // --- Step 1: POST /api/helcim/customer (free tier) ---
     const customerEvent = createMockEvent({
       method: 'POST',
       path: '/api/helcim/customer',
@@ -95,13 +100,9 @@ describe('signup → subscription bridge-cookie hand-off', () => {
     expect(result1.success).toBe(true)
     expect(result1.member.status).toBe('pending_payment')
 
-    // The regression: prior code skipped setPaymentBridgeCookie when
-    // contributionAmount === 0, leaving the user unable to complete
-    // subscription activation in the same flow.
     const bridgeToken = extractBridgeCookie(customerEvent)
     expect(bridgeToken, 'payment-bridge cookie missing on $0 signup').toBeTruthy()
 
-    // --- Step 2: POST /api/helcim/subscription (free tier) ---
     Member.findOneAndUpdate.mockResolvedValue({ _id: MEMBER_ID, status: 'pending_payment' })
     Member.findById.mockResolvedValue({
       _id: MEMBER_ID,
@@ -117,13 +118,7 @@ describe('signup → subscription bridge-cookie hand-off', () => {
       path: '/api/helcim/subscription',
       headers: { origin: ALLOWED_ORIGIN },
       cookies: { 'payment-bridge': bridgeToken },
-      body: {
-        customerId: 999,
-        customerCode: 'CST999',
-        contributionAmount: 0,
-        cadence: 'monthly',
-        cardToken: null
-      }
+      body: SUBSCRIPTION_BODY
     })
 
     const result2 = await subscriptionHandler(subscriptionEvent)
@@ -133,20 +128,11 @@ describe('signup → subscription bridge-cookie hand-off', () => {
   })
 
   it('$0 signup with no bridge cookie carried forward → subscription returns 401', async () => {
-    // Sanity check: confirms the auth gate still rejects fresh, unauthenticated
-    // calls to /api/helcim/subscription. If this ever stops failing, the
-    // bridge cookie has stopped being load-bearing and the gate is open.
     const subscriptionEvent = createMockEvent({
       method: 'POST',
       path: '/api/helcim/subscription',
       headers: { origin: ALLOWED_ORIGIN },
-      body: {
-        customerId: 999,
-        customerCode: 'CST999',
-        contributionAmount: 0,
-        cadence: 'monthly',
-        cardToken: null
-      }
+      body: SUBSCRIPTION_BODY
     })
 
     await expect(subscriptionHandler(subscriptionEvent)).rejects.toMatchObject({