Disable strong verification reminder on dashboard

[aapeliv]

Stops the backend from emitting the complete_verification_reminder from GetReminders, so the strong verification reminder no longer appears on the dashboard. The proto field and frontend handler are left in place as harmless dead code; can be removed in a follow-up if desired.

Testing

Updated affected backend tests (test_reminders, test_AvailableWriteReferences_and_ListPendingReferencesToWrite, and the SV happy-path test) to drop assertions about the verification reminder.

uv run pytest src/tests/test_account.py::test_reminders src/tests/test_strong_verification.py src/tests/test_references.py::test_AvailableWriteReferences_and_ListPendingReferencesToWrite

All pass.

Backend checklist

• Added tests for any new code or added a regression test if fixing a bug
• Run the backend locally and it works
• Added migrations if there are any database changes, rebased onto develop if necessary for linear migration history

For maintainers

• Maintainers can push commits to my branch
• Maintainers can merge this PR for me

This PR was created with the Couchers PR skill.

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Project	Deployment	Actions	Updated (UTC)
couchers	Ready	Preview	May 10, 2026 1:51am

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📝 Release Notes

This PR should be included in the release notes.

Suggested release note:

Removed the strong verification reminder from the dashboard

🤖 Bot Debug Information

Model: couchers.openai.gpt-5.4
Decision: include
Reasoning: This change removes the strong verification reminder from the dashboard, which is a user-visible product change affecting what reminders people see. While relatively small, it is noticeable to users and changes dashboard behavior in a meaningful way.