test(e2e): align specs with current page structure

join-flow:
- Form now requires Community Guidelines agreement; tests check the
  checkbox before expecting submit to enable.
- Contribution input is a numeric field with preset chip buttons, not a
  USelect with $0/mo options — fill the input directly.
- Success state lives in SignupFlowOverlay ("Welcome to Ghost Guild!");
  no .success-box exists. Match by heading instead.
- Inline .error-box renders OUTSIDE <form>, so duplicate-email assertion
  uses .signup-flow-overlay .error-box (which is the user-facing error).

member-profile:
- "How you appear to other members" copy was retired; replace with the
  stable "Show in Member Directory" structural label.
- Add waitForLoadState('networkidle') after goto for ClientOnly auth
  hydration so "Edit Profile" reliably appears within timeout.

board:
- Add waitForLoadState('networkidle') after goto so the action-bar's
  "+ New Post" click handler is bound before the test clicks.
- Submit button is named exactly "Post" — disambiguate from "+ New Post"
  buttons with { exact: true }.
- Delete is a two-step in-card confirm (Delete → Confirm), not a native
  browser dialog; drop the page.once('dialog') listener.

admin-board-channels:
- Channel name placeholder is "e.g., coop-formation" (no leading #).
- Slack Channel ID input only appears in the Edit modal (v-if="editingId"),
  not on Create — Slack channel is auto-created server-side. Drop the
  slack ID fill from the Create step.
- Add waitForLoadState('networkidle') before opening the modal.

e2e/join-flow.spec.js

@@ -68,8 +68,12 @@ test.describe('Join page — member signup flow', () => {
     await page.locator('#join-name').fill('Test User')
     await expect(page.locator('.form-submit')).toBeDisabled()
 
-    // Fill email too — now all fields are populated and button should be enabled
+    // Fill email — agreement still unchecked, so still disabled
     await page.locator('#join-email').fill('incomplete-test@example.com')
+    await expect(page.locator('.form-submit')).toBeDisabled()
+
+    // Check the Community Guidelines agreement — now all required fields satisfied
+    await page.getByRole('checkbox', { name: /Community Guidelines/ }).check()
     await expect(page.locator('.form-submit')).toBeEnabled()
   })
 
@@ -83,8 +87,9 @@ test.describe('Join page — member signup flow', () => {
     await page.locator('#join-name').fill('E2E Test User')
     await page.locator('#join-email').fill(uniqueEmail)
     await page.locator('#circle-community').check({ force: true })
-    await page.locator('#join-contribution').click()
-    await page.getByRole('option', { name: '$0/mo' }).click()
+    // Contribution is now a numeric input with preset chips, not a select
+    await page.locator('#join-contribution').fill('0')
+    await page.getByRole('checkbox', { name: /Community Guidelines/ }).check()
 
     await expect(page.locator('.form-submit')).toBeEnabled()
 
@@ -93,8 +98,10 @@ test.describe('Join page — member signup flow', () => {
 
     await page.locator('.form-submit').click()
 
-    // Free tier creates subscription then shows confirmation (step 3)
-    await expect(page.locator('.success-box')).toBeVisible({ timeout: 15000 })
+    // Free tier flips the SignupFlowOverlay into its success state
+    await expect(
+      page.getByRole('heading', { name: 'Welcome to Ghost Guild!' })
+    ).toBeVisible({ timeout: 15000 })
   })
 
   test('duplicate email shows error', async ({ page }) => {
@@ -109,12 +116,13 @@ test.describe('Join page — member signup flow', () => {
     await page.locator('#join-name').fill('Dup Test User')
     await page.locator('#join-email').fill(duplicateEmail)
     await page.locator('#circle-community').check({ force: true })
-    await page.locator('#join-contribution').click()
-    await page.getByRole('option', { name: '$0/mo' }).click()
+    await page.locator('#join-contribution').fill('0')
+    await page.getByRole('checkbox', { name: /Community Guidelines/ }).check()
     await page.locator('.form-submit').click()
 
-    // Should show an error about the email already existing
-    await expect(page.locator('.error-box')).toBeVisible({ timeout: 10000 })
-    await expect(page.locator('.error-box')).toContainText(/already/i)
+    // Helcim 409 puts SignupFlowOverlay into its error state
+    const overlayError = page.locator('.signup-flow-overlay .error-box')
+    await expect(overlayError).toBeVisible({ timeout: 10000 })
+    await expect(overlayError).toContainText(/already/i)
   })
 })