feat(time_slice): inference callsites read self.convergence

The three Game::*_with_arena callsites in time_slice.rs (in
TimeSlice::iteration's sequential branch, TimeSlice::log_evidence's
run_event closure, and Event::iteration_direct via parameter) now use
the propagated ConvergenceOptions instead of hardcoded ::default().
sweep_color_groups (both rayon and non-rayon paths) forwards
self.convergence into Event::iteration_direct.

Damped EP (alpha < 1.0) and custom max_iter / epsilon set on
HistoryBuilder::convergence(opts) now actually reach the within-game
inference loop. Bit-equal for users on default options.

Removes the temporary #[allow(dead_code)] on TimeSlice::convergence
that was added in the prior commit.

src/time_slice.rs

@@ -133,25 +133,21 @@ impl Event {
         skills: &mut SkillStore,
         agents: &CompetitorStore<T, D>,
         p_draw: f64,
+        convergence: crate::ConvergenceOptions,
         arena: &mut ScratchArena,
     ) {
         let teams = self.within_priors(false, false, skills, agents);
         let result = self.outputs();
         let g = match self.kind {
-            EventKind::Ranked => Game::ranked_with_arena(
-                teams,
-                &result,
-                &self.weights,
-                p_draw,
-                crate::ConvergenceOptions::default(),
-                arena,
-            ),
+            EventKind::Ranked => {
+                Game::ranked_with_arena(teams, &result, &self.weights, p_draw, convergence, arena)
+            }
             EventKind::Scored { score_sigma } => Game::scored_with_arena(
                 teams,
                 &result,
                 &self.weights,
                 score_sigma,
-                crate::ConvergenceOptions::default(),
+                convergence,
                 arena,
             ),
         };
@@ -175,7 +171,6 @@ pub struct TimeSlice<T: Time = i64> {
     pub(crate) skills: SkillStore,
     pub(crate) time: T,
     p_draw: f64,
-    #[allow(dead_code)]
     pub(crate) convergence: crate::ConvergenceOptions,
     arena: ScratchArena,
     pub(crate) color_groups: ColorGroups,
@@ -335,7 +330,7 @@ impl<T: Time> TimeSlice<T> {
                         &result,
                         &event.weights,
                         self.p_draw,
-                        crate::ConvergenceOptions::default(),
+                        self.convergence,
                         &mut self.arena,
                     ),
                     EventKind::Scored { score_sigma } => Game::scored_with_arena(
@@ -343,7 +338,7 @@ impl<T: Time> TimeSlice<T> {
                         &result,
                         &event.weights,
                         score_sigma,
-                        crate::ConvergenceOptions::default(),
+                        self.convergence,
                         &mut self.arena,
                     ),
                 };
@@ -397,6 +392,7 @@ impl<T: Time> TimeSlice<T> {
             }
             let range = self.color_groups.color_range(color_idx);
             let p_draw = self.p_draw;
+            let convergence = self.convergence;
 
             if group_len >= RAYON_THRESHOLD {
                 // Obtain a raw pointer from the unique `&mut self.skills` reference.
@@ -414,12 +410,18 @@ impl<T: Time> TimeSlice<T> {
                     ARENA.with(|cell| {
                         let mut arena = cell.borrow_mut();
                         arena.reset();
-                        ev.iteration_direct(skills, agents, p_draw, &mut arena);
+                        ev.iteration_direct(skills, agents, p_draw, convergence, &mut arena);
                     });
                 });
             } else {
                 for ev in &mut self.events[range] {
-                    ev.iteration_direct(&mut self.skills, agents, p_draw, &mut self.arena);
+                    ev.iteration_direct(
+                        &mut self.skills,
+                        agents,
+                        p_draw,
+                        self.convergence,
+                        &mut self.arena,
+                    );
                 }
             }
         }
@@ -441,7 +443,13 @@ impl<T: Time> TimeSlice<T> {
             // allowed within a single method body.
             let p_draw = self.p_draw;
             for ev in &mut self.events[range] {
-                ev.iteration_direct(&mut self.skills, agents, p_draw, &mut self.arena);
+                ev.iteration_direct(
+                    &mut self.skills,
+                    agents,
+                    p_draw,
+                    self.convergence,
+                    &mut self.arena,
+                );
             }
         }
     }
@@ -527,7 +535,7 @@ impl<T: Time> TimeSlice<T> {
                     &result,
                     &event.weights,
                     self.p_draw,
-                    crate::ConvergenceOptions::default(),
+                    self.convergence,
                     arena,
                 )
                 .evidence
@@ -537,7 +545,7 @@ impl<T: Time> TimeSlice<T> {
                     &result,
                     &event.weights,
                     score_sigma,
-                    crate::ConvergenceOptions::default(),
+                    self.convergence,
                     arena,
                 )
                 .evidence