re: all 89 remaining disagreements are 24-vertex boxes -- no real mesh disagrees

Checking the vertex count of every minority decode: all 89 are 24-vertex
resources, including e101_wep_01_l, which last commit called the one real
geometry disagreement -- it is a 24-vert box too. So after this thread's fixes no
real mesh on the disc decodes differently in different containers; what remains
is structurally identical bounding boxes swapping identities, which needs an
ordering rule rather than a validity gate. Monotone anchoring was refuted before
but under a decoder with other defects, and is now cheap to judge: 89 -> 0.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

crates/sylpheed-formats/examples/consensus_check.rs

@@ -71,8 +71,8 @@ fn main() {
         for e in list_.iter().filter(|e| e.3 != *best) {
             minority += 1;
             rows.push(format!(
-                "{:<22} {name:<26} {:?} vs the other {n} containers' {:?}",
-                e.0, e.3, best
+                "{:<22} {name:<26} v={:<6} {:?} vs the other {n} containers' {:?}",
+                e.0, e.1, e.3, best
             ));
         }
     }