toggle_field only changed active_field — it never called cancel_field for the
previously open field. Unsaved typed values stayed in edit_full_name_override etc.,
so reopening a field would show the stale typed value and re-apply it to the badge
preview, even though the user had already moved on.
New logic: capture was_open, always call cancel_field for the current field (resets
edit vars + sets active_field = null), then open the new field if it wasn't the one
being closed. Closing a field by re-clicking its pencil now also discards unsaved state,
consistent with the explicit [X] button behavior.
Also: add global placeholder CSS fix to TODO__Agents.md (scoped workaround already
in ae_comp__badge_print_controls; long-term fix belongs in app.css or theme file).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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