Added member cancellation reason header

[weylandswart]

Ref https://linear.app/ghost/issue/DES-1296/cancellation-email-missing-styling-for-cancellation-reason

We had previously removed the cancellation reason heading. This adds it back.

[coderabbitai]

Walkthrough

This change updates the paid subscription cancellation email template to include a "Cancellation reason:" label before the cancellation reason value when present. A corresponding test file was updated to verify the new label appears correctly in three assertions. The changes add clarity to the cancellation details section without altering the conditional visibility logic or template structure.

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'Added member cancellation reason header' clearly and specifically describes the main change: restoring a cancellation reason header in the email template.
Description check	✅ Passed	The description is directly related to the changeset, explaining that the cancellation reason heading was previously removed and this PR adds it back, with a reference to the Linear issue and visual proof.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch member-cancelation-email-header

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[coderabbitai]

🧹 Nitpick comments (1)

ghost/core/core/server/services/staff/email-templates/new-paid-cancellation.hbs (1)

19-23: Consider updating the preview text label for consistency.

The preview snippet (shown in email clients before opening) still reads Reason: while the email body now uses Cancellation reason:. The label mismatch is cosmetic but noticeable.

✏️ Suggested update

-  Reason: {{subscriptionData.cancellationReason}}
+  Cancellation reason: {{subscriptionData.cancellationReason}}

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In
`@ghost/core/core/server/services/staff/email-templates/new-paid-cancellation.hbs`
around lines 19 - 23, The preview text label in the new-paid-cancellation
template is inconsistent: update the preview snippet that conditionally renders
subscriptionData.cancellationReason so the label matches the email body by
replacing "Reason:" with "Cancellation reason:" (locate the conditional block
using subscriptionData.cancellationReason in new-paid-cancellation.hbs and
change the preview label to "Cancellation reason:" to ensure consistency).

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Nitpick comments:
In
`@ghost/core/core/server/services/staff/email-templates/new-paid-cancellation.hbs`:
- Around line 19-23: The preview text label in the new-paid-cancellation
template is inconsistent: update the preview snippet that conditionally renders
subscriptionData.cancellationReason so the label matches the email body by
replacing "Reason:" with "Cancellation reason:" (locate the conditional block
using subscriptionData.cancellationReason in new-paid-cancellation.hbs and
change the preview label to "Cancellation reason:" to ensure consistency).

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ℹ️ Review info

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Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 3472e54 and 85fc37e.

📒 Files selected for processing (2)

• ghost/core/core/server/services/staff/email-templates/new-paid-cancellation.hbs
• ghost/core/test/unit/server/services/staff/staff-service.test.js