(a) a same-binding click in the marker dialog is a no-op: the value
source and badge reset only on an actual change of binding (#378 §1.6) —
both the candidate list and the virtual radio.
(b) rewriteMarkerControlReferences no longer plants value_badge /
value_source keys as undefined on markers that never had them.
(v) the expensive release diff proof (2 git-show per src file) runs only
for commits the SAME shared predicate classifies as release — both
disjuncts, including the Release: trailer.
(g) the paired neutralisation formats in space export are documented in
place and pinned by a combined badge+value_source pytest.
User-Visible: yes
Issue: #385
