- GET /write now checks all groups are written/skipped before showing
the completion screen; incomplete sessions are redirected to the first
draft group
- POST /write/done now accepts form data (not JSON) and redirects to
/export; wired up from the completion screen via a <form> POST button
- phase5.html extra_scripts block wrapped in {% if group %} to prevent
Jinja errors when group is None on the completion screen
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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