CB-REV-0001: the adversarial review, and it was not approvable

Thirteen challenges, five FATAL, all five conceded. Nothing had reached
ground-game, which is the only reason this is a correction and not a
retraction.

The worst: `Reactive` was not "greedy with one preference changed". It
differed in five, including SpendFreedom — ranked 95 unconditionally
against greedy's `95 if gated else 0` — so the seat burned its Freedom
token in round one of every game. A second change to the exact mechanism
under study, and every number in CB-EV-0031 was measuring it. The pass
claimed ADR-0018's one-varying-parameter discipline in its own workplan
while violating it. GreedyPolicy::rank is now public and the policy
delegates, overriding one match arm, so the control is structurally true.

Withdrawn entirely: "H1-B suppresses DARVO in the attacker". Disabling
H1-B under the corrected policy changes the arm count by exactly zero.
The pass hedged the wrong variable — it disclaimed "the number 2" and
defended "the direction", and the direction is what failed. The
supporting inference was invalid anyway: final Stress cannot show who
armed, because DarvoEnded resets the stage and REVERSE gives its owner -2.

Corrected: criterion 1 was failed on the greedy column while the pass's
own printed table showed 31-1000 arms in the other columns — the
selective-column move, in the file that names it. "Peak Stress was 1" was
a maximum over StressSet payloads, not held state (true: 2); the baseline
game count was 1,600 not 3,200; and "a reckless policy plays identically
to a careful one" is refuted by this repo's own rank-95 policy.

Inert controls replaced, each verified red against the reviewer's own
mutation: the baseline hash test compared two identically-constructed
states (serde(skip) on variant left 57/57 green); the `unchanged:` test
checked 3 of 7 entries and passed with SOLVE made illegal; H1-A's ordering
and H1-B's OU-cancel path had no test at all.

edition-check now covers catalog.yaml and rules_delta.yaml, whose digests
CB-WP-0038 claimed and never recorded — the review found it and reported
it unverified rather than absent, which was the right call.

Still open: H1-B on the DARVO extra-Attack path is untested, regulation.rs
still skips setup failures silently, and round-5 arms are counted though
they can never act.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

games/ground/src/bot.rs

@@ -323,7 +323,20 @@ impl Policy for RandomPolicy {
 pub struct GreedyPolicy;
 
 impl GreedyPolicy {
-    fn rank(state: &GroundState, seat: PlayerId, cmd: &GroundCommand) -> i32 {
+    /// The ranking, **public so a variant policy can override exactly one
+    /// arm and inherit the rest** (CB-WP-0039, after review).
+    ///
+    /// It was private, so `regulation.rs` re-typed an abridged copy and
+    /// called it "greedy with one preference changed". It differed in
+    /// five places — including `SpendFreedom`, which the copy ranked 95
+    /// unconditionally where this ranks it 0 unless the gate is biting,
+    /// so the "reactive" seat burned its Freedom token in round one of
+    /// every game. **A second change to the exact mechanism the pass was
+    /// studying**, and every number in CB-EV-0031 was measuring it.
+    ///
+    /// Making this callable removes the possibility rather than testing
+    /// for it: a caller that delegates cannot drift.
+    pub fn rank(state: &GroundState, seat: PlayerId, cmd: &GroundCommand) -> i32 {
         let gated = state
             .players
             .get(&seat)