The current_stage readonly field is removed from Stage 0 — the activity-
derived stage value already displays in the SubmissionContextHeader, so
showing it again in-card was redundant. current_stage remains in form
state (RHF defaults from /api/data) because every Stage 1-5 visibleWhen
rule and the journey rail still key off it; it just isn't rendered.
Section labels for Stages 1-5 updated to match the CiviCRM Stage option
group labels exactly (ampersand instead of 'and'; Stage 2 corrected from
'Feasibility' to 'Grow & Plan'). Stage 0 keeps its 'Check-in (organizing)'
label since it represents the always-visible core fields, not the Inquiry
stage rank.
Also folded in: in-progress visibleWhen additions on several Stage 0
fields and commented-out field stubs from your working tree.
74a85d38fe