fix(ci): rustfmt the probe test, regenerate the board entries index

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01G22yT6htkcdyXsihxxXdrg

Author: claude

.claude/board/entries/README.md

@@ -25,10 +25,11 @@ index row, (3) no duplicate entry id. Checks 1 and 2 are deliberately
 opposite directions; the stranding this convention prevents shows up in
 exactly one of them, never both.
 
-429 entries, 2026-08-06 .. 2026-10-22.
+430 entries, 2026-08-06 .. 2026-10-22.
 
 | date | entry id | finding | file |
 |---|---|---|---|
+| 2026-10-22 | `pal256-hebbian-overlay-plasticity` |  | [2026-10-22-pal256-hebbian-overlay-plasticity.md](2026-10-22-pal256-hebbian-overlay-plasticity.md) |
 | 2026-10-22 | `math-compiler-stage-b-e1` |  | [2026-10-22-math-compiler-stage-b-e1.md](2026-10-22-math-compiler-stage-b-e1.md) |
 | 2026-10-22 | `math-compiler-gap-matrix` |  | [2026-10-22-math-compiler-gap-matrix.md](2026-10-22-math-compiler-gap-matrix.md) |
 | 2026-10-22 | `D-MPS-9` |  | [2026-10-22-d-mps-9-mork-oracle.md](2026-10-22-d-mps-9-mork-oracle.md) |

crates/causal-edge/tests/palette256_hebbian_overlay_probe.rs

@@ -6,20 +6,34 @@ struct Overlay {
     seen_sources: u64,
 }
 impl Overlay {
-    fn apply(&mut self, source_id: u8, pre: f64, post: f64, eta: f64) -> Result<bool, &'static str> {
-        if source_id >= 64 || !pre.is_finite() || !post.is_finite()
-            || !eta.is_finite() || !(0.0..=1.0).contains(&eta) {
+    fn apply(
+        &mut self,
+        source_id: u8,
+        pre: f64,
+        post: f64,
+        eta: f64,
+    ) -> Result<bool, &'static str> {
+        if source_id >= 64
+            || !pre.is_finite()
+            || !post.is_finite()
+            || !eta.is_finite()
+            || !(0.0..=1.0).contains(&eta)
+        {
             return Err("invalid update contract");
         }
         let source = 1_u64 << source_id;
-        if self.seen_sources & source != 0 { return Ok(false); }
+        if self.seen_sources & source != 0 {
+            return Ok(false);
+        }
         // Hypothesis under test, NOT NARS revision or a proven Bayesian update.
         let damping = 1.0 - self.latent.abs().tanh();
         self.latent = (self.latent + eta * pre * post * damping).clamp(-8.0, 8.0);
         self.seen_sources |= source;
         Ok(true)
     }
-    fn bounded_readout(&self) -> f64 { self.latent.tanh() }
+    fn bounded_readout(&self) -> f64 {
+        self.latent.tanh()
+    }
 }
 #[test]
 fn repeated_eligible_updates_remain_bounded_and_do_not_move_reference() {
@@ -41,5 +55,8 @@ fn a_duplicate_root_does_not_reinforce_the_synapse_again() {
     assert!(!synapse.apply(4, 0.8, 0.9, 0.1).unwrap());
     assert_eq!(synapse.latent, first);
     assert!(synapse.apply(5, -0.8, 0.9, 0.1).unwrap());
-    assert!(synapse.latent < first, "anticorrelated activation must decrease the overlay");
+    assert!(
+        synapse.latent < first,
+        "anticorrelated activation must decrease the overlay"
+    );
 }